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| author | squahtx <squahtx@users.noreply.github.com> | 2022-12-13 13:30:19 +0000 |
|---|---|---|
| committer | squahtx <squahtx@users.noreply.github.com> | 2022-12-13 13:30:19 +0000 |
| commit | 0cde17771bcd2bcf48b7b361d8d69d907832ef98 (patch) | |
| tree | df950c0e4baa2320c7d6fe9fc0b4185118fe2d1a /v1.74/usage/configuration/config_documentation.html | |
| parent | deploy: e2a1adbf5d11288f2134ced1f84c6ffdd91a9357 (diff) | |
| download | synapse-0cde17771bcd2bcf48b7b361d8d69d907832ef98.tar.xz | |
deploy: 62ed877433e23ba055cbc69a089c09d03c67681d
Diffstat (limited to 'v1.74/usage/configuration/config_documentation.html')
| -rw-r--r-- | v1.74/usage/configuration/config_documentation.html | 3620 |
1 files changed, 3620 insertions, 0 deletions
diff --git a/v1.74/usage/configuration/config_documentation.html b/v1.74/usage/configuration/config_documentation.html new file mode 100644 index 0000000000..ab15c6704b --- /dev/null +++ b/v1.74/usage/configuration/config_documentation.html @@ -0,0 +1,3620 @@ +<!DOCTYPE HTML> +<html lang="en" class="sidebar-visible no-js light"> + <head> + <!-- Book generated using mdBook --> + <meta charset="UTF-8"> + <title>Configuration Manual - Synapse</title> + <!-- Custom HTML head --> + <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> + <meta name="description" content=""> + <meta name="viewport" content="width=device-width, initial-scale=1"> + <meta name="theme-color" content="#ffffff" /> + + <link rel="icon" href="../../favicon.svg"> + <link rel="shortcut icon" href="../../favicon.png"> + <link rel="stylesheet" href="../../css/variables.css"> + <link rel="stylesheet" href="../../css/general.css"> + <link rel="stylesheet" href="../../css/chrome.css"> + <link rel="stylesheet" href="../../css/print.css" media="print"> + <!-- Fonts --> + <link rel="stylesheet" href="../../FontAwesome/css/font-awesome.css"> + <link rel="stylesheet" href="../../fonts/fonts.css"> + <!-- Highlight.js Stylesheets --> + <link rel="stylesheet" href="../../highlight.css"> + <link rel="stylesheet" href="../../tomorrow-night.css"> + <link rel="stylesheet" href="../../ayu-highlight.css"> + + <!-- Custom theme stylesheets --> + <link rel="stylesheet" href="../../docs/website_files/table-of-contents.css"> + <link rel="stylesheet" href="../../docs/website_files/remove-nav-buttons.css"> + <link rel="stylesheet" href="../../docs/website_files/indent-section-headers.css"> + </head> + <body> + <!-- Provide site root to javascript --> + <script type="text/javascript"> + var path_to_root = "../../"; + var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light"; + </script> + + <!-- Work around some values being stored in localStorage wrapped in quotes --> + <script type="text/javascript"> + try { + var theme = localStorage.getItem('mdbook-theme'); + var sidebar = localStorage.getItem('mdbook-sidebar'); + if (theme.startsWith('"') && theme.endsWith('"')) { + localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1)); + } + if (sidebar.startsWith('"') && sidebar.endsWith('"')) { + localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1)); + } + } catch (e) { } + </script> + + <!-- Set the theme before any content is loaded, prevents flash --> + <script type="text/javascript"> + var theme; + try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { } + if (theme === null || theme === undefined) { theme = default_theme; } + var html = document.querySelector('html'); + html.classList.remove('no-js') + html.classList.remove('light') + html.classList.add(theme); + html.classList.add('js'); + </script> + + <!-- Hide / unhide sidebar before it is displayed --> + <script type="text/javascript"> + var html = document.querySelector('html'); + var sidebar = 'hidden'; + if (document.body.clientWidth >= 1080) { + try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { } + sidebar = sidebar || 'visible'; + } + html.classList.remove('sidebar-visible'); + html.classList.add("sidebar-" + sidebar); + </script> + + <nav id="sidebar" class="sidebar" aria-label="Table of contents"> + <div class="sidebar-scrollbox"> + <ol class="chapter"><li class="chapter-item expanded affix "><li class="part-title">Introduction</li><li class="chapter-item expanded "><a href="../../welcome_and_overview.html">Welcome and Overview</a></li><li class="chapter-item expanded affix "><li class="part-title">Setup</li><li class="chapter-item expanded "><a href="../../setup/installation.html">Installation</a></li><li class="chapter-item expanded "><a href="../../postgres.html">Using Postgres</a></li><li class="chapter-item expanded "><a href="../../reverse_proxy.html">Configuring a Reverse Proxy</a></li><li class="chapter-item expanded "><a href="../../setup/forward_proxy.html">Configuring a Forward/Outbound Proxy</a></li><li class="chapter-item expanded "><a href="../../turn-howto.html">Configuring a Turn Server</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../setup/turn/coturn.html">coturn TURN server</a></li><li class="chapter-item expanded "><a href="../../setup/turn/eturnal.html">eturnal TURN server</a></li></ol></li><li class="chapter-item expanded "><a href="../../delegate.html">Delegation</a></li><li class="chapter-item expanded affix "><li class="part-title">Upgrading</li><li class="chapter-item expanded "><a href="../../upgrade.html">Upgrading between Synapse Versions</a></li><li class="chapter-item expanded affix "><li class="part-title">Usage</li><li class="chapter-item expanded "><a href="../../federate.html">Federation</a></li><li class="chapter-item expanded "><a href="../../usage/configuration/index.html">Configuration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../usage/configuration/config_documentation.html" class="active">Configuration Manual</a></li><li class="chapter-item expanded "><a href="../../usage/configuration/homeserver_sample_config.html">Homeserver Sample Config File</a></li><li class="chapter-item expanded "><a href="../../usage/configuration/logging_sample_config.html">Logging Sample Config File</a></li><li class="chapter-item expanded "><a href="../../structured_logging.html">Structured Logging</a></li><li class="chapter-item expanded "><a href="../../templates.html">Templates</a></li><li class="chapter-item expanded "><a href="../../usage/configuration/user_authentication/index.html">User Authentication</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../usage/configuration/user_authentication/single_sign_on/index.html">Single-Sign On</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../openid.html">OpenID Connect</a></li><li class="chapter-item expanded "><a href="../../usage/configuration/user_authentication/single_sign_on/saml.html">SAML</a></li><li class="chapter-item expanded "><a href="../../usage/configuration/user_authentication/single_sign_on/cas.html">CAS</a></li><li class="chapter-item expanded "><a href="../../sso_mapping_providers.html">SSO Mapping Providers</a></li></ol></li><li class="chapter-item expanded "><a href="../../password_auth_providers.html">Password Auth Providers</a></li><li class="chapter-item expanded "><a href="../../jwt.html">JSON Web Tokens</a></li><li class="chapter-item expanded "><a href="../../usage/configuration/user_authentication/refresh_tokens.html">Refresh Tokens</a></li></ol></li><li class="chapter-item expanded "><a href="../../CAPTCHA_SETUP.html">Registration Captcha</a></li><li class="chapter-item expanded "><a href="../../application_services.html">Application Services</a></li><li class="chapter-item expanded "><a href="../../server_notices.html">Server Notices</a></li><li class="chapter-item expanded "><a href="../../consent_tracking.html">Consent Tracking</a></li><li class="chapter-item expanded "><a href="../../user_directory.html">User Directory</a></li><li class="chapter-item expanded "><a href="../../message_retention_policies.html">Message Retention Policies</a></li><li class="chapter-item expanded "><a href="../../modules/index.html">Pluggable Modules</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../modules/writing_a_module.html">Writing a module</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../modules/spam_checker_callbacks.html">Spam checker callbacks</a></li><li class="chapter-item expanded "><a href="../../modules/third_party_rules_callbacks.html">Third-party rules callbacks</a></li><li class="chapter-item expanded "><a href="../../modules/presence_router_callbacks.html">Presence router callbacks</a></li><li class="chapter-item expanded "><a href="../../modules/account_validity_callbacks.html">Account validity callbacks</a></li><li class="chapter-item expanded "><a href="../../modules/password_auth_provider_callbacks.html">Password auth provider callbacks</a></li><li class="chapter-item expanded "><a href="../../modules/background_update_controller_callbacks.html">Background update controller callbacks</a></li><li class="chapter-item expanded "><a href="../../modules/account_data_callbacks.html">Account data callbacks</a></li><li class="chapter-item expanded "><a href="../../modules/porting_legacy_module.html">Porting a legacy module to the new interface</a></li></ol></li></ol></li><li class="chapter-item expanded "><a href="../../workers.html">Workers</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../synctl_workers.html">Using synctl with Workers</a></li><li class="chapter-item expanded "><a href="../../systemd-with-workers/index.html">Systemd</a></li></ol></li></ol></li><li class="chapter-item expanded "><a href="../../usage/administration/index.html">Administration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../usage/administration/admin_api/index.html">Admin API</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../admin_api/account_validity.html">Account Validity</a></li><li class="chapter-item expanded "><a href="../../usage/administration/admin_api/background_updates.html">Background Updates</a></li><li class="chapter-item expanded "><a href="../../admin_api/event_reports.html">Event Reports</a></li><li class="chapter-item expanded "><a href="../../admin_api/media_admin_api.html">Media</a></li><li class="chapter-item expanded "><a href="../../admin_api/purge_history_api.html">Purge History</a></li><li class="chapter-item expanded "><a href="../../admin_api/register_api.html">Register Users</a></li><li class="chapter-item expanded "><a href="../../usage/administration/admin_api/registration_tokens.html">Registration Tokens</a></li><li class="chapter-item expanded "><a href="../../admin_api/room_membership.html">Manipulate Room Membership</a></li><li class="chapter-item expanded "><a href="../../admin_api/rooms.html">Rooms</a></li><li class="chapter-item expanded "><a href="../../admin_api/server_notices.html">Server Notices</a></li><li class="chapter-item expanded "><a href="../../admin_api/statistics.html">Statistics</a></li><li class="chapter-item expanded "><a href="../../admin_api/user_admin_api.html">Users</a></li><li class="chapter-item expanded "><a href="../../admin_api/version_api.html">Server Version</a></li><li class="chapter-item expanded "><a href="../../usage/administration/admin_api/federation.html">Federation</a></li></ol></li><li class="chapter-item expanded "><a href="../../manhole.html">Manhole</a></li><li class="chapter-item expanded "><a href="../../metrics-howto.html">Monitoring</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../usage/administration/monitoring/reporting_homeserver_usage_statistics.html">Reporting Homeserver Usage Statistics</a></li></ol></li><li class="chapter-item expanded "><a href="../../usage/administration/monthly_active_users.html">Monthly Active Users</a></li><li class="chapter-item expanded "><a href="../../usage/administration/understanding_synapse_through_grafana_graphs.html">Understanding Synapse Through Grafana Graphs</a></li><li class="chapter-item expanded "><a href="../../usage/administration/useful_sql_for_admins.html">Useful SQL for Admins</a></li><li class="chapter-item expanded "><a href="../../usage/administration/database_maintenance_tools.html">Database Maintenance Tools</a></li><li class="chapter-item expanded "><a href="../../usage/administration/state_groups.html">State Groups</a></li><li class="chapter-item expanded "><a href="../../usage/administration/request_log.html">Request log format</a></li><li class="chapter-item expanded "><a href="../../usage/administration/admin_faq.html">Admin FAQ</a></li><li class="chapter-item expanded "><div>Scripts</div></li></ol></li><li class="chapter-item expanded "><li class="part-title">Development</li><li class="chapter-item expanded "><a href="../../development/contributing_guide.html">Contributing Guide</a></li><li class="chapter-item expanded "><a href="../../code_style.html">Code Style</a></li><li class="chapter-item expanded "><a href="../../development/reviews.html">Reviewing Code</a></li><li class="chapter-item expanded "><a href="../../development/releases.html">Release Cycle</a></li><li class="chapter-item expanded "><a href="../../development/git.html">Git Usage</a></li><li class="chapter-item expanded "><div>Testing</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../development/demo.html">Demo scripts</a></li></ol></li><li class="chapter-item expanded "><a href="../../opentracing.html">OpenTracing</a></li><li class="chapter-item expanded "><a href="../../development/database_schema.html">Database Schemas</a></li><li class="chapter-item expanded "><a href="../../development/experimental_features.html">Experimental features</a></li><li class="chapter-item expanded "><a href="../../development/dependencies.html">Dependency management</a></li><li class="chapter-item expanded "><div>Synapse Architecture</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../development/synapse_architecture/cancellation.html">Cancellation</a></li><li class="chapter-item expanded "><a href="../../log_contexts.html">Log Contexts</a></li><li class="chapter-item expanded "><a href="../../replication.html">Replication</a></li><li class="chapter-item expanded "><a href="../../tcp_replication.html">TCP Replication</a></li></ol></li><li class="chapter-item expanded "><a href="../../development/internal_documentation/index.html">Internal Documentation</a></li><li><ol class="section"><li class="chapter-item expanded "><div>Single Sign-On</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../development/saml.html">SAML</a></li><li class="chapter-item expanded "><a href="../../development/cas.html">CAS</a></li></ol></li><li class="chapter-item expanded "><a href="../../development/room-dag-concepts.html">Room DAG concepts</a></li><li class="chapter-item expanded "><div>State Resolution</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../auth_chain_difference_algorithm.html">The Auth Chain Difference Algorithm</a></li></ol></li><li class="chapter-item expanded "><a href="../../media_repository.html">Media Repository</a></li><li class="chapter-item expanded "><a href="../../room_and_user_statistics.html">Room and User Statistics</a></li></ol></li><li class="chapter-item expanded "><div>Scripts</div></li><li class="chapter-item expanded affix "><li class="part-title">Other</li><li class="chapter-item expanded "><a href="../../deprecation_policy.html">Dependency Deprecation Policy</a></li><li class="chapter-item expanded "><a href="../../other/running_synapse_on_single_board_computers.html">Running Synapse on a Single-Board Computer</a></li></ol> + </div> + <div id="sidebar-resize-handle" class="sidebar-resize-handle"></div> + </nav> + + <div id="page-wrapper" class="page-wrapper"> + + <div class="page"> + <div id="menu-bar-hover-placeholder"></div> + <div id="menu-bar" class="menu-bar sticky bordered"> + <div class="left-buttons"> + <button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar"> + <i class="fa fa-bars"></i> + </button> + <button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list"> + <i class="fa fa-paint-brush"></i> + </button> + <ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu"> + <li role="none"><button role="menuitem" class="theme" id="light">Light (default)</button></li> + <li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li> + <li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li> + <li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li> + <li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li> + </ul> + <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar"> + <i class="fa fa-search"></i> + </button> + </div> + + <h1 class="menu-title">Synapse</h1> + + <div class="right-buttons"> + <a href="../../print.html" title="Print this book" aria-label="Print this book"> + <i id="print-button" class="fa fa-print"></i> + </a> + <a href="https://github.com/matrix-org/synapse" title="Git repository" aria-label="Git repository"> + <i id="git-repository-button" class="fa fa-github"></i> + </a> + <a href="https://github.com/matrix-org/synapse/edit/develop/docs/usage/configuration/config_documentation.md" title="Suggest an edit" aria-label="Suggest an edit"> + <i id="git-edit-button" class="fa fa-edit"></i> + </a> + </div> + </div> + + <div id="search-wrapper" class="hidden"> + <form id="searchbar-outer" class="searchbar-outer"> + <input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header"> + </form> + <div id="searchresults-outer" class="searchresults-outer hidden"> + <div id="searchresults-header" class="searchresults-header"></div> + <ul id="searchresults"> + </ul> + </div> + </div> + <!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM --> + <script type="text/javascript"> + document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible'); + document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible'); + Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) { + link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1); + }); + </script> + + <div id="content" class="content"> + <main> + <!-- Page table of contents --> + <div class="sidetoc"> + <nav class="pagetoc"></nav> + </div> + + <h1 id="configuring-synapse"><a class="header" href="#configuring-synapse">Configuring Synapse</a></h1> +<p>This is intended as a guide to the Synapse configuration. The behavior of a Synapse instance can be modified +through the many configuration settings documented here — each config option is explained, +including what the default is, how to change the default and what sort of behaviour the setting governs. +Also included is an example configuration for each setting. If you don't want to spend a lot of time +thinking about options, the config as generated sets sensible defaults for all values. Do note however that the +database defaults to SQLite, which is not recommended for production usage. You can read more on this subject +<a href="../../setup/installation.html#using-postgresql">here</a>.</p> +<h2 id="config-conventions"><a class="header" href="#config-conventions">Config Conventions</a></h2> +<p>Configuration options that take a time period can be set using a number +followed by a letter. Letters have the following meanings:</p> +<ul> +<li><code>s</code> = second</li> +<li><code>m</code> = minute</li> +<li><code>h</code> = hour</li> +<li><code>d</code> = day</li> +<li><code>w</code> = week</li> +<li><code>y</code> = year</li> +</ul> +<p>For example, setting <code>redaction_retention_period: 5m</code> would remove redacted +messages from the database after 5 minutes, rather than 5 months.</p> +<p>In addition, configuration options referring to size use the following suffixes:</p> +<ul> +<li><code>M</code> = MiB, or 1,048,576 bytes</li> +<li><code>K</code> = KiB, or 1024 bytes</li> +</ul> +<p>For example, setting <code>max_avatar_size: 10M</code> means that Synapse will not accept files larger than 10,485,760 bytes +for a user avatar.</p> +<h3 id="yaml"><a class="header" href="#yaml">YAML</a></h3> +<p>The configuration file is a <a href="https://yaml.org/">YAML</a> file, which means that certain syntax rules +apply if you want your config file to be read properly. A few helpful things to know:</p> +<ul> +<li> +<p><code>#</code> before any option in the config will comment out that setting and either a default (if available) will +be applied or Synapse will ignore the setting. Thus, in example #1 below, the setting will be read and +applied, but in example #2 the setting will not be read and a default will be applied.</p> +<p>Example #1:</p> +<pre><code class="language-yaml">pid_file: DATADIR/homeserver.pid +</code></pre> +<p>Example #2:</p> +<pre><code class="language-yaml">#pid_file: DATADIR/homeserver.pid +</code></pre> +</li> +<li> +<p>Indentation matters! The indentation before a setting +will determine whether a given setting is read as part of another +setting, or considered on its own. Thus, in example #1, the <code>enabled</code> setting +is read as a sub-option of the <code>presence</code> setting, and will be properly applied.</p> +<p>However, the lack of indentation before the <code>enabled</code> setting in example #2 means +that when reading the config, Synapse will consider both <code>presence</code> and <code>enabled</code> as +different settings. In this case, <code>presence</code> has no value, and thus a default applied, and <code>enabled</code> +is an option that Synapse doesn't recognize and thus ignores.</p> +<p>Example #1:</p> +<pre><code class="language-yaml">presence: + enabled: false +</code></pre> +<p>Example #2:</p> +<pre><code class="language-yaml">presence: +enabled: false +</code></pre> +<p>In this manual, all top-level settings (ones with no indentation) are identified +at the beginning of their section (i.e. "### <code>example_setting</code>") and +the sub-options, if any, are identified and listed in the body of the section. +In addition, each setting has an example of its usage, with the proper indentation +shown.</p> +</li> +</ul> +<h2 id="modules"><a class="header" href="#modules">Modules</a></h2> +<p>Server admins can expand Synapse's functionality with external modules.</p> +<p>See <a href="../../modules/index.html">here</a> for more +documentation on how to configure or create custom modules for Synapse.</p> +<hr /> +<h3 id="modules-1"><a class="header" href="#modules-1"><code>modules</code></a></h3> +<p>Use the <code>module</code> sub-option to add modules under this option to extend functionality. +The <code>module</code> setting then has a sub-option, <code>config</code>, which can be used to define some configuration +for the <code>module</code>.</p> +<p>Defaults to none.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">modules: + - module: my_super_module.MySuperClass + config: + do_thing: true + - module: my_other_super_module.SomeClass + config: {} +</code></pre> +<hr /> +<h2 id="server"><a class="header" href="#server">Server</a></h2> +<p>Define your homeserver name and other base options.</p> +<hr /> +<h3 id="server_name"><a class="header" href="#server_name"><code>server_name</code></a></h3> +<p>This sets the public-facing domain of the server.</p> +<p>The <code>server_name</code> name will appear at the end of usernames and room addresses +created on your server. For example if the <code>server_name</code> was example.com, +usernames on your server would be in the format <code>@user:example.com</code></p> +<p>In most cases you should avoid using a matrix specific subdomain such as +matrix.example.com or synapse.example.com as the <code>server_name</code> for the same +reasons you wouldn't use user@email.example.com as your email address. +See <a href="../../delegate.html">here</a> +for information on how to host Synapse on a subdomain while preserving +a clean <code>server_name</code>.</p> +<p>The <code>server_name</code> cannot be changed later so it is important to +configure this correctly before you start Synapse. It should be all +lowercase and may contain an explicit port.</p> +<p>There is no default for this option.</p> +<p>Example configuration #1:</p> +<pre><code class="language-yaml">server_name: matrix.org +</code></pre> +<p>Example configuration #2:</p> +<pre><code class="language-yaml">server_name: localhost:8080 +</code></pre> +<hr /> +<h3 id="pid_file"><a class="header" href="#pid_file"><code>pid_file</code></a></h3> +<p>When running Synapse as a daemon, the file to store the pid in. Defaults to none.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">pid_file: DATADIR/homeserver.pid +</code></pre> +<hr /> +<h3 id="web_client_location"><a class="header" href="#web_client_location"><code>web_client_location</code></a></h3> +<p>The absolute URL to the web client which <code>/</code> will redirect to. Defaults to none.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">web_client_location: https://riot.example.com/ +</code></pre> +<hr /> +<h3 id="public_baseurl"><a class="header" href="#public_baseurl"><code>public_baseurl</code></a></h3> +<p>The public-facing base URL that clients use to access this Homeserver (not +including _matrix/...). This is the same URL a user might enter into the +'Custom Homeserver URL' field on their client. If you use Synapse with a +reverse proxy, this should be the URL to reach Synapse via the proxy. +Otherwise, it should be the URL to reach Synapse's client HTTP listener (see +<a href="#listeners">'listeners'</a> below).</p> +<p>Defaults to <code>https://<server_name>/</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">public_baseurl: https://example.com/ +</code></pre> +<hr /> +<h3 id="serve_server_wellknown"><a class="header" href="#serve_server_wellknown"><code>serve_server_wellknown</code></a></h3> +<p>By default, other servers will try to reach our server on port 8448, which can +be inconvenient in some environments.</p> +<p>Provided <code>https://<server_name>/</code> on port 443 is routed to Synapse, this +option configures Synapse to serve a file at <code>https://<server_name>/.well-known/matrix/server</code>. +This will tell other servers to send traffic to port 443 instead.</p> +<p>This option currently defaults to false.</p> +<p>See <a href="../../delegate.html">Delegation of incoming federation traffic</a> for more +information.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">serve_server_wellknown: true +</code></pre> +<hr /> +<h3 id="extra_well_known_client_content"><a class="header" href="#extra_well_known_client_content"><code>extra_well_known_client_content </code></a></h3> +<p>This option allows server runners to add arbitrary key-value pairs to the <a href="https://spec.matrix.org/latest/client-server-api/#well-known-uri">client-facing <code>.well-known</code> response</a>. +Note that the <code>public_baseurl</code> config option must be provided for Synapse to serve a response to <code>/.well-known/matrix/client</code> at all.</p> +<p>If this option is provided, it parses the given yaml to json and +serves it on <code>/.well-known/matrix/client</code> endpoint +alongside the standard properties.</p> +<p><em>Added in Synapse 1.62.0.</em></p> +<p>Example configuration:</p> +<pre><code class="language-yaml">extra_well_known_client_content : + option1: value1 + option2: value2 +</code></pre> +<hr /> +<h3 id="soft_file_limit"><a class="header" href="#soft_file_limit"><code>soft_file_limit</code></a></h3> +<p>Set the soft limit on the number of file descriptors synapse can use. +Zero is used to indicate synapse should set the soft limit to the hard limit. +Defaults to 0.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">soft_file_limit: 3 +</code></pre> +<hr /> +<h3 id="presence"><a class="header" href="#presence"><code>presence</code></a></h3> +<p>Presence tracking allows users to see the state (e.g online/offline) +of other local and remote users. Set the <code>enabled</code> sub-option to false to +disable presence tracking on this homeserver. Defaults to true. +This option replaces the previous top-level 'use_presence' option.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">presence: + enabled: false +</code></pre> +<hr /> +<h3 id="require_auth_for_profile_requests"><a class="header" href="#require_auth_for_profile_requests"><code>require_auth_for_profile_requests</code></a></h3> +<p>Whether to require authentication to retrieve profile data (avatars, display names) of other +users through the client API. Defaults to false. Note that profile data is also available +via the federation API, unless <code>allow_profile_lookup_over_federation</code> is set to false.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">require_auth_for_profile_requests: true +</code></pre> +<hr /> +<h3 id="limit_profile_requests_to_users_who_share_rooms"><a class="header" href="#limit_profile_requests_to_users_who_share_rooms"><code>limit_profile_requests_to_users_who_share_rooms</code></a></h3> +<p>Use this option to require a user to share a room with another user in order +to retrieve their profile information. Only checked on Client-Server +requests. Profile requests from other servers should be checked by the +requesting server. Defaults to false.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">limit_profile_requests_to_users_who_share_rooms: true +</code></pre> +<hr /> +<h3 id="include_profile_data_on_invite"><a class="header" href="#include_profile_data_on_invite"><code>include_profile_data_on_invite</code></a></h3> +<p>Use this option to prevent a user's profile data from being retrieved and +displayed in a room until they have joined it. By default, a user's +profile data is included in an invite event, regardless of the values +of the above two settings, and whether or not the users share a server. +Defaults to true.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">include_profile_data_on_invite: false +</code></pre> +<hr /> +<h3 id="allow_public_rooms_without_auth"><a class="header" href="#allow_public_rooms_without_auth"><code>allow_public_rooms_without_auth</code></a></h3> +<p>If set to true, removes the need for authentication to access the server's +public rooms directory through the client API, meaning that anyone can +query the room directory. Defaults to false.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">allow_public_rooms_without_auth: true +</code></pre> +<hr /> +<h3 id="allow_public_rooms_over_federation"><a class="header" href="#allow_public_rooms_over_federation"><code>allow_public_rooms_over_federation</code></a></h3> +<p>If set to true, allows any other homeserver to fetch the server's public +rooms directory via federation. Defaults to false.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">allow_public_rooms_over_federation: true +</code></pre> +<hr /> +<h3 id="default_room_version"><a class="header" href="#default_room_version"><code>default_room_version</code></a></h3> +<p>The default room version for newly created rooms on this server.</p> +<p>Known room versions are listed <a href="https://spec.matrix.org/latest/rooms/#complete-list-of-room-versions">here</a></p> +<p>For example, for room version 1, <code>default_room_version</code> should be set +to "1".</p> +<p>Currently defaults to "9".</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">default_room_version: "8" +</code></pre> +<hr /> +<h3 id="gc_thresholds"><a class="header" href="#gc_thresholds"><code>gc_thresholds</code></a></h3> +<p>The garbage collection threshold parameters to pass to <code>gc.set_threshold</code>, if defined. +Defaults to none.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">gc_thresholds: [700, 10, 10] +</code></pre> +<hr /> +<h3 id="gc_min_interval"><a class="header" href="#gc_min_interval"><code>gc_min_interval</code></a></h3> +<p>The minimum time in seconds between each GC for a generation, regardless of +the GC thresholds. This ensures that we don't do GC too frequently. A value of <code>[1s, 10s, 30s]</code> +indicates that a second must pass between consecutive generation 0 GCs, etc.</p> +<p>Defaults to <code>[1s, 10s, 30s]</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">gc_min_interval: [0.5s, 30s, 1m] +</code></pre> +<hr /> +<h3 id="filter_timeline_limit"><a class="header" href="#filter_timeline_limit"><code>filter_timeline_limit</code></a></h3> +<p>Set the limit on the returned events in the timeline in the get +and sync operations. Defaults to 100. A value of -1 means no upper limit.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">filter_timeline_limit: 5000 +</code></pre> +<hr /> +<h3 id="block_non_admin_invites"><a class="header" href="#block_non_admin_invites"><code>block_non_admin_invites</code></a></h3> +<p>Whether room invites to users on this server should be blocked +(except those sent by local server admins). Defaults to false.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">block_non_admin_invites: true +</code></pre> +<hr /> +<h3 id="enable_search"><a class="header" href="#enable_search"><code>enable_search</code></a></h3> +<p>If set to false, new messages will not be indexed for searching and users +will receive errors when searching for messages. Defaults to true.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">enable_search: false +</code></pre> +<hr /> +<h3 id="ip_range_blacklist"><a class="header" href="#ip_range_blacklist"><code>ip_range_blacklist</code></a></h3> +<p>This option prevents outgoing requests from being sent to the specified blacklisted IP address +CIDR ranges. If this option is not specified then it defaults to private IP +address ranges (see the example below).</p> +<p>The blacklist applies to the outbound requests for federation, identity servers, +push servers, and for checking key validity for third-party invite events.</p> +<p>(0.0.0.0 and :: are always blacklisted, whether or not they are explicitly +listed here, since they correspond to unroutable addresses.)</p> +<p>This option replaces <code>federation_ip_range_blacklist</code> in Synapse v1.25.0.</p> +<p>Note: The value is ignored when an HTTP proxy is in use.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">ip_range_blacklist: + - '127.0.0.0/8' + - '10.0.0.0/8' + - '172.16.0.0/12' + - '192.168.0.0/16' + - '100.64.0.0/10' + - '192.0.0.0/24' + - '169.254.0.0/16' + - '192.88.99.0/24' + - '198.18.0.0/15' + - '192.0.2.0/24' + - '198.51.100.0/24' + - '203.0.113.0/24' + - '224.0.0.0/4' + - '::1/128' + - 'fe80::/10' + - 'fc00::/7' + - '2001:db8::/32' + - 'ff00::/8' + - 'fec0::/10' +</code></pre> +<hr /> +<h3 id="ip_range_whitelist"><a class="header" href="#ip_range_whitelist"><code>ip_range_whitelist</code></a></h3> +<p>List of IP address CIDR ranges that should be allowed for federation, +identity servers, push servers, and for checking key validity for +third-party invite events. This is useful for specifying exceptions to +wide-ranging blacklisted target IP ranges - e.g. for communication with +a push server only visible in your network.</p> +<p>This whitelist overrides <code>ip_range_blacklist</code> and defaults to an empty +list.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">ip_range_whitelist: + - '192.168.1.1' +</code></pre> +<hr /> +<h3 id="listeners"><a class="header" href="#listeners"><code>listeners</code></a></h3> +<p>List of ports that Synapse should listen on, their purpose and their +configuration.</p> +<p>Sub-options for each listener include:</p> +<ul> +<li> +<p><code>port</code>: the TCP port to bind to.</p> +</li> +<li> +<p><code>bind_addresses</code>: a list of local addresses to listen on. The default is +'all local interfaces'.</p> +</li> +<li> +<p><code>type</code>: the type of listener. Normally <code>http</code>, but other valid options are:</p> +<ul> +<li> +<p><code>manhole</code>: (see the docs <a href="../../manhole.html">here</a>),</p> +</li> +<li> +<p><code>metrics</code>: (see the docs <a href="../../metrics-howto.html">here</a>),</p> +</li> +</ul> +</li> +<li> +<p><code>tls</code>: set to true to enable TLS for this listener. Will use the TLS key/cert specified in tls_private_key_path / tls_certificate_path.</p> +</li> +<li> +<p><code>x_forwarded</code>: Only valid for an 'http' listener. Set to true to use the X-Forwarded-For header as the client IP. Useful when Synapse is +behind a <a href="../../reverse_proxy.html">reverse-proxy</a>.</p> +</li> +<li> +<p><code>request_id_header</code>: The header extracted from each incoming request that is +used as the basis for the request ID. The request ID is used in +<a href="../administration/request_log.html#request-log-format">logs</a> and tracing to +correlate and match up requests. When unset, Synapse will automatically +generate sequential request IDs. This option is useful when Synapse is behind +a <a href="../../reverse_proxy.html">reverse-proxy</a>.</p> +<p><em>Added in Synapse 1.68.0.</em></p> +</li> +<li> +<p><code>resources</code>: Only valid for an 'http' listener. A list of resources to host +on this port. Sub-options for each resource are:</p> +<ul> +<li> +<p><code>names</code>: a list of names of HTTP resources. See below for a list of valid resource names.</p> +</li> +<li> +<p><code>compress</code>: set to true to enable gzip compression on HTTP bodies for this resource. This is currently only supported with the +<code>client</code>, <code>consent</code>, <code>metrics</code> and <code>federation</code> resources.</p> +</li> +</ul> +</li> +<li> +<p><code>additional_resources</code>: Only valid for an 'http' listener. A map of +additional endpoints which should be loaded via dynamic modules.</p> +</li> +</ul> +<p>Valid resource names are:</p> +<ul> +<li> +<p><code>client</code>: the client-server API (/_matrix/client), and the synapse admin API (/_synapse/admin). Also implies <code>media</code> and <code>static</code>.</p> +</li> +<li> +<p><code>consent</code>: user consent forms (/_matrix/consent). See <a href="../../consent_tracking.html">here</a> for more.</p> +</li> +<li> +<p><code>federation</code>: the server-server API (/_matrix/federation). Also implies <code>media</code>, <code>keys</code>, <code>openid</code></p> +</li> +<li> +<p><code>keys</code>: the key discovery API (/_matrix/key).</p> +</li> +<li> +<p><code>media</code>: the media API (/_matrix/media).</p> +</li> +<li> +<p><code>metrics</code>: the metrics interface. See <a href="../../metrics-howto.html">here</a>.</p> +</li> +<li> +<p><code>openid</code>: OpenID authentication. See <a href="../../openid.html">here</a>.</p> +</li> +<li> +<p><code>replication</code>: the HTTP replication API (/_synapse/replication). See <a href="../../workers.html">here</a>.</p> +</li> +<li> +<p><code>static</code>: static resources under synapse/static (/_matrix/static). (Mostly useful for 'fallback authentication'.)</p> +</li> +</ul> +<p>Example configuration #1:</p> +<pre><code class="language-yaml">listeners: + # TLS-enabled listener: for when matrix traffic is sent directly to synapse. + # + # (Note that you will also need to give Synapse a TLS key and certificate: see the TLS section + # below.) + # + - port: 8448 + type: http + tls: true + resources: + - names: [client, federation] +</code></pre> +<p>Example configuration #2:</p> +<pre><code class="language-yaml">listeners: + # Unsecure HTTP listener: for when matrix traffic passes through a reverse proxy + # that unwraps TLS. + # + # If you plan to use a reverse proxy, please see + # https://matrix-org.github.io/synapse/latest/reverse_proxy.html. + # + - port: 8008 + tls: false + type: http + x_forwarded: true + bind_addresses: ['::1', '127.0.0.1'] + + resources: + - names: [client, federation] + compress: false + + # example additional_resources: + additional_resources: + "/_matrix/my/custom/endpoint": + module: my_module.CustomRequestHandler + config: {} + + # Turn on the twisted ssh manhole service on localhost on the given + # port. + - port: 9000 + bind_addresses: ['::1', '127.0.0.1'] + type: manhole +</code></pre> +<hr /> +<h3 id="manhole_settings"><a class="header" href="#manhole_settings"><code>manhole_settings</code></a></h3> +<p>Connection settings for the manhole. You can find more information +on the manhole <a href="../../manhole.html">here</a>. Manhole sub-options include:</p> +<ul> +<li><code>username</code> : the username for the manhole. This defaults to 'matrix'.</li> +<li><code>password</code>: The password for the manhole. This defaults to 'rabbithole'.</li> +<li><code>ssh_priv_key_path</code> and <code>ssh_pub_key_path</code>: The private and public SSH key pair used to encrypt the manhole traffic. +If these are left unset, then hardcoded and non-secret keys are used, +which could allow traffic to be intercepted if sent over a public network.</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">manhole_settings: + username: manhole + password: mypassword + ssh_priv_key_path: CONFDIR/id_rsa + ssh_pub_key_path: CONFDIR/id_rsa.pub +</code></pre> +<hr /> +<h3 id="dummy_events_threshold"><a class="header" href="#dummy_events_threshold"><code>dummy_events_threshold</code></a></h3> +<p>Forward extremities can build up in a room due to networking delays between +homeservers. Once this happens in a large room, calculation of the state of +that room can become quite expensive. To mitigate this, once the number of +forward extremities reaches a given threshold, Synapse will send an +<code>org.matrix.dummy_event</code> event, which will reduce the forward extremities +in the room.</p> +<p>This setting defines the threshold (i.e. number of forward extremities in the room) at which dummy events are sent. +The default value is 10.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">dummy_events_threshold: 5 +</code></pre> +<hr /> +<h3 id="delete_stale_devices_after"><a class="header" href="#delete_stale_devices_after"><code>delete_stale_devices_after</code></a></h3> +<p>An optional duration. If set, Synapse will run a daily background task to log out and +delete any device that hasn't been accessed for more than the specified amount of time.</p> +<p>Defaults to no duration, which means devices are never pruned.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">delete_stale_devices_after: 1y +</code></pre> +<h2 id="homeserver-blocking"><a class="header" href="#homeserver-blocking">Homeserver blocking</a></h2> +<p>Useful options for Synapse admins.</p> +<hr /> +<h3 id="admin_contact"><a class="header" href="#admin_contact"><code>admin_contact</code></a></h3> +<p>How to reach the server admin, used in <code>ResourceLimitError</code>. Defaults to none.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">admin_contact: 'mailto:admin@server.com' +</code></pre> +<hr /> +<h3 id="hs_disabled-and-hs_disabled_message"><a class="header" href="#hs_disabled-and-hs_disabled_message"><code>hs_disabled</code> and <code>hs_disabled_message</code></a></h3> +<p>Blocks users from connecting to the homeserver and provides a human-readable reason +why the connection was blocked. Defaults to false.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">hs_disabled: true +hs_disabled_message: 'Reason for why the HS is blocked' +</code></pre> +<hr /> +<h3 id="limit_usage_by_mau"><a class="header" href="#limit_usage_by_mau"><code>limit_usage_by_mau</code></a></h3> +<p>This option disables/enables monthly active user blocking. Used in cases where the admin or +server owner wants to limit to the number of monthly active users. When enabled and a limit is +reached the server returns a <code>ResourceLimitError</code> with error type <code>Codes.RESOURCE_LIMIT_EXCEEDED</code>. +Defaults to false. If this is enabled, a value for <code>max_mau_value</code> must also be set.</p> +<p>See <a href="../administration/monthly_active_users.html">Monthly Active Users</a> for details on how to configure MAU.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">limit_usage_by_mau: true +</code></pre> +<hr /> +<h3 id="max_mau_value"><a class="header" href="#max_mau_value"><code>max_mau_value</code></a></h3> +<p>This option sets the hard limit of monthly active users above which the server will start +blocking user actions if <code>limit_usage_by_mau</code> is enabled. Defaults to 0.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">max_mau_value: 50 +</code></pre> +<hr /> +<h3 id="mau_trial_days"><a class="header" href="#mau_trial_days"><code>mau_trial_days</code></a></h3> +<p>The option <code>mau_trial_days</code> is a means to add a grace period for active users. It +means that users must be active for the specified number of days before they +can be considered active and guards against the case where lots of users +sign up in a short space of time never to return after their initial +session. Defaults to 0.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">mau_trial_days: 5 +</code></pre> +<hr /> +<h3 id="mau_appservice_trial_days"><a class="header" href="#mau_appservice_trial_days"><code>mau_appservice_trial_days</code></a></h3> +<p>The option <code>mau_appservice_trial_days</code> is similar to <code>mau_trial_days</code>, but applies a different +trial number if the user was registered by an appservice. A value +of 0 means no trial days are applied. Appservices not listed in this dictionary +use the value of <code>mau_trial_days</code> instead.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">mau_appservice_trial_days: + my_appservice_id: 3 + another_appservice_id: 6 +</code></pre> +<hr /> +<h3 id="mau_limit_alerting"><a class="header" href="#mau_limit_alerting"><code>mau_limit_alerting</code></a></h3> +<p>The option <code>mau_limit_alerting</code> is a means of limiting client-side alerting +should the mau limit be reached. This is useful for small instances +where the admin has 5 mau seats (say) for 5 specific people and no +interest increasing the mau limit further. Defaults to true, which +means that alerting is enabled.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">mau_limit_alerting: false +</code></pre> +<hr /> +<h3 id="mau_stats_only"><a class="header" href="#mau_stats_only"><code>mau_stats_only</code></a></h3> +<p>If enabled, the metrics for the number of monthly active users will +be populated, however no one will be limited based on these numbers. If <code>limit_usage_by_mau</code> +is true, this is implied to be true. Defaults to false.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">mau_stats_only: true +</code></pre> +<hr /> +<h3 id="mau_limit_reserved_threepids"><a class="header" href="#mau_limit_reserved_threepids"><code>mau_limit_reserved_threepids</code></a></h3> +<p>Sometimes the server admin will want to ensure certain accounts are +never blocked by mau checking. These accounts are specified by this option. +Defaults to none. Add accounts by specifying the <code>medium</code> and <code>address</code> of the +reserved threepid (3rd party identifier).</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">mau_limit_reserved_threepids: + - medium: 'email' + address: 'reserved_user@example.com' +</code></pre> +<hr /> +<h3 id="server_context"><a class="header" href="#server_context"><code>server_context</code></a></h3> +<p>This option is used by phonehome stats to group together related servers. +Defaults to none.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">server_context: context +</code></pre> +<hr /> +<h3 id="limit_remote_rooms"><a class="header" href="#limit_remote_rooms"><code>limit_remote_rooms</code></a></h3> +<p>When this option is enabled, the room "complexity" will be checked before a user +joins a new remote room. If it is above the complexity limit, the server will +disallow joining, or will instantly leave. This is useful for homeservers that are +resource-constrained. Options for this setting include:</p> +<ul> +<li><code>enabled</code>: whether this check is enabled. Defaults to false.</li> +<li><code>complexity</code>: the limit above which rooms cannot be joined. The default is 1.0.</li> +<li><code>complexity_error</code>: override the error which is returned when the room is too complex with a +custom message.</li> +<li><code>admins_can_join</code>: allow server admins to join complex rooms. Default is false.</li> +</ul> +<p>Room complexity is an arbitrary measure based on factors such as the number of +users in the room.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">limit_remote_rooms: + enabled: true + complexity: 0.5 + complexity_error: "I can't let you do that, Dave." + admins_can_join: true +</code></pre> +<hr /> +<h3 id="require_membership_for_aliases"><a class="header" href="#require_membership_for_aliases"><code>require_membership_for_aliases</code></a></h3> +<p>Whether to require a user to be in the room to add an alias to it. +Defaults to true.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">require_membership_for_aliases: false +</code></pre> +<hr /> +<h3 id="allow_per_room_profiles"><a class="header" href="#allow_per_room_profiles"><code>allow_per_room_profiles</code></a></h3> +<p>Whether to allow per-room membership profiles through the sending of membership +events with profile information that differs from the target's global profile. +Defaults to true.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">allow_per_room_profiles: false +</code></pre> +<hr /> +<h3 id="max_avatar_size"><a class="header" href="#max_avatar_size"><code>max_avatar_size</code></a></h3> +<p>The largest permissible file size in bytes for a user avatar. Defaults to no restriction. +Use M for MB and K for KB.</p> +<p>Note that user avatar changes will not work if this is set without using Synapse's media repository.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">max_avatar_size: 10M +</code></pre> +<hr /> +<h3 id="allowed_avatar_mimetypes"><a class="header" href="#allowed_avatar_mimetypes"><code>allowed_avatar_mimetypes</code></a></h3> +<p>The MIME types allowed for user avatars. Defaults to no restriction.</p> +<p>Note that user avatar changes will not work if this is set without +using Synapse's media repository.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">allowed_avatar_mimetypes: ["image/png", "image/jpeg", "image/gif"] +</code></pre> +<hr /> +<h3 id="redaction_retention_period"><a class="header" href="#redaction_retention_period"><code>redaction_retention_period</code></a></h3> +<p>How long to keep redacted events in unredacted form in the database. After +this period redacted events get replaced with their redacted form in the DB.</p> +<p>Synapse will check whether the rentention period has concluded for redacted +events every 5 minutes. Thus, even if this option is set to <code>0</code>, Synapse may +still take up to 5 minutes to purge redacted events from the database.</p> +<p>Defaults to <code>7d</code>. Set to <code>null</code> to disable.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">redaction_retention_period: 28d +</code></pre> +<hr /> +<h3 id="user_ips_max_age"><a class="header" href="#user_ips_max_age"><code>user_ips_max_age</code></a></h3> +<p>How long to track users' last seen time and IPs in the database.</p> +<p>Defaults to <code>28d</code>. Set to <code>null</code> to disable clearing out of old rows.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">user_ips_max_age: 14d +</code></pre> +<hr /> +<h3 id="request_token_inhibit_3pid_errors"><a class="header" href="#request_token_inhibit_3pid_errors"><code>request_token_inhibit_3pid_errors</code></a></h3> +<p>Inhibits the <code>/requestToken</code> endpoints from returning an error that might leak +information about whether an e-mail address is in use or not on this +homeserver. Defaults to false. +Note that for some endpoints the error situation is the e-mail already being +used, and for others the error is entering the e-mail being unused. +If this option is enabled, instead of returning an error, these endpoints will +act as if no error happened and return a fake session ID ('sid') to clients.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">request_token_inhibit_3pid_errors: true +</code></pre> +<hr /> +<h3 id="next_link_domain_whitelist"><a class="header" href="#next_link_domain_whitelist"><code>next_link_domain_whitelist</code></a></h3> +<p>A list of domains that the domain portion of <code>next_link</code> parameters +must match.</p> +<p>This parameter is optionally provided by clients while requesting +validation of an email or phone number, and maps to a link that +users will be automatically redirected to after validation +succeeds. Clients can make use this parameter to aid the validation +process.</p> +<p>The whitelist is applied whether the homeserver or an identity server is handling validation.</p> +<p>The default value is no whitelist functionality; all domains are +allowed. Setting this value to an empty list will instead disallow +all domains.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">next_link_domain_whitelist: ["matrix.org"] +</code></pre> +<hr /> +<h3 id="templates-and-custom_template_directory"><a class="header" href="#templates-and-custom_template_directory"><code>templates</code> and <code>custom_template_directory</code></a></h3> +<p>These options define templates to use when generating email or HTML page contents. +The <code>custom_template_directory</code> determines which directory Synapse will try to +find template files in to use to generate email or HTML page contents. +If not set, or a file is not found within the template directory, a default +template from within the Synapse package will be used.</p> +<p>See <a href="../../templates.html">here</a> for more +information about using custom templates.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">templates: + custom_template_directory: /path/to/custom/templates/ +</code></pre> +<hr /> +<h3 id="retention"><a class="header" href="#retention"><code>retention</code></a></h3> +<p>This option and the associated options determine message retention policy at the +server level.</p> +<p>Room admins and mods can define a retention period for their rooms using the +<code>m.room.retention</code> state event, and server admins can cap this period by setting +the <code>allowed_lifetime_min</code> and <code>allowed_lifetime_max</code> config options.</p> +<p>If this feature is enabled, Synapse will regularly look for and purge events +which are older than the room's maximum retention period. Synapse will also +filter events received over federation so that events that should have been +purged are ignored and not stored again.</p> +<p>The message retention policies feature is disabled by default. Please be advised +that enabling this feature carries some risk. There are known bugs with the implementation +which can cause database corruption. Setting retention to delete older history +is less risky than deleting newer history but in general caution is advised when enabling this +experimental feature. You can read more about this feature <a href="../../message_retention_policies.html">here</a>.</p> +<p>This setting has the following sub-options:</p> +<ul> +<li> +<p><code>default_policy</code>: Default retention policy. If set, Synapse will apply it to rooms that lack the +'m.room.retention' state event. This option is further specified by the +<code>min_lifetime</code> and <code>max_lifetime</code> sub-options associated with it. Note that the +value of <code>min_lifetime</code> doesn't matter much because Synapse doesn't take it into account yet.</p> +</li> +<li> +<p><code>allowed_lifetime_min</code> and <code>allowed_lifetime_max</code>: Retention policy limits. If +set, and the state of a room contains a <code>m.room.retention</code> event in its state +which contains a <code>min_lifetime</code> or a <code>max_lifetime</code> that's out of these bounds, +Synapse will cap the room's policy to these limits when running purge jobs.</p> +</li> +<li> +<p><code>purge_jobs</code> and the associated <code>shortest_max_lifetime</code> and <code>longest_max_lifetime</code> sub-options: +Server admins can define the settings of the background jobs purging the +events whose lifetime has expired under the <code>purge_jobs</code> section.</p> +<p>If no configuration is provided for this option, a single job will be set up to delete +expired events in every room daily.</p> +<p>Each job's configuration defines which range of message lifetimes the job +takes care of. For example, if <code>shortest_max_lifetime</code> is '2d' and +<code>longest_max_lifetime</code> is '3d', the job will handle purging expired events in +rooms whose state defines a <code>max_lifetime</code> that's both higher than 2 days, and +lower than or equal to 3 days. Both the minimum and the maximum value of a +range are optional, e.g. a job with no <code>shortest_max_lifetime</code> and a +<code>longest_max_lifetime</code> of '3d' will handle every room with a retention policy +whose <code>max_lifetime</code> is lower than or equal to three days.</p> +<p>The rationale for this per-job configuration is that some rooms might have a +retention policy with a low <code>max_lifetime</code>, where history needs to be purged +of outdated messages on a more frequent basis than for the rest of the rooms +(e.g. every 12h), but not want that purge to be performed by a job that's +iterating over every room it knows, which could be heavy on the server.</p> +<p>If any purge job is configured, it is strongly recommended to have at least +a single job with neither <code>shortest_max_lifetime</code> nor <code>longest_max_lifetime</code> +set, or one job without <code>shortest_max_lifetime</code> and one job without +<code>longest_max_lifetime</code> set. Otherwise some rooms might be ignored, even if +<code>allowed_lifetime_min</code> and <code>allowed_lifetime_max</code> are set, because capping a +room's policy to these values is done after the policies are retrieved from +Synapse's database (which is done using the range specified in a purge job's +configuration).</p> +</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">retention: + enabled: true + default_policy: + min_lifetime: 1d + max_lifetime: 1y + allowed_lifetime_min: 1d + allowed_lifetime_max: 1y + purge_jobs: + - longest_max_lifetime: 3d + interval: 12h + - shortest_max_lifetime: 3d + interval: 1d +</code></pre> +<hr /> +<h2 id="tls"><a class="header" href="#tls">TLS</a></h2> +<p>Options related to TLS.</p> +<hr /> +<h3 id="tls_certificate_path"><a class="header" href="#tls_certificate_path"><code>tls_certificate_path</code></a></h3> +<p>This option specifies a PEM-encoded X509 certificate for TLS. +This certificate, as of Synapse 1.0, will need to be a valid and verifiable +certificate, signed by a recognised Certificate Authority. Defaults to none.</p> +<p>Be sure to use a <code>.pem</code> file that includes the full certificate chain including +any intermediate certificates (for instance, if using certbot, use +<code>fullchain.pem</code> as your certificate, not <code>cert.pem</code>).</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">tls_certificate_path: "CONFDIR/SERVERNAME.tls.crt" +</code></pre> +<hr /> +<h3 id="tls_private_key_path"><a class="header" href="#tls_private_key_path"><code>tls_private_key_path</code></a></h3> +<p>PEM-encoded private key for TLS. Defaults to none.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">tls_private_key_path: "CONFDIR/SERVERNAME.tls.key" +</code></pre> +<hr /> +<h3 id="federation_verify_certificates"><a class="header" href="#federation_verify_certificates"><code>federation_verify_certificates</code></a></h3> +<p>Whether to verify TLS server certificates for outbound federation requests.</p> +<p>Defaults to true. To disable certificate verification, set the option to false.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">federation_verify_certificates: false +</code></pre> +<hr /> +<h3 id="federation_client_minimum_tls_version"><a class="header" href="#federation_client_minimum_tls_version"><code>federation_client_minimum_tls_version</code></a></h3> +<p>The minimum TLS version that will be used for outbound federation requests.</p> +<p>Defaults to <code>1</code>. Configurable to <code>1</code>, <code>1.1</code>, <code>1.2</code>, or <code>1.3</code>. Note +that setting this value higher than <code>1.2</code> will prevent federation to most +of the public Matrix network: only configure it to <code>1.3</code> if you have an +entirely private federation setup and you can ensure TLS 1.3 support.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">federation_client_minimum_tls_version: 1.2 +</code></pre> +<hr /> +<h3 id="federation_certificate_verification_whitelist"><a class="header" href="#federation_certificate_verification_whitelist"><code>federation_certificate_verification_whitelist</code></a></h3> +<p>Skip federation certificate verification on a given whitelist +of domains.</p> +<p>This setting should only be used in very specific cases, such as +federation over Tor hidden services and similar. For private networks +of homeservers, you likely want to use a private CA instead.</p> +<p>Only effective if <code>federation_verify_certicates</code> is <code>true</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">federation_certificate_verification_whitelist: + - lon.example.com + - "*.domain.com" + - "*.onion" +</code></pre> +<hr /> +<h3 id="federation_custom_ca_list"><a class="header" href="#federation_custom_ca_list"><code>federation_custom_ca_list</code></a></h3> +<p>List of custom certificate authorities for federation traffic.</p> +<p>This setting should only normally be used within a private network of +homeservers.</p> +<p>Note that this list will replace those that are provided by your +operating environment. Certificates must be in PEM format.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">federation_custom_ca_list: + - myCA1.pem + - myCA2.pem + - myCA3.pem +</code></pre> +<hr /> +<h2 id="federation"><a class="header" href="#federation">Federation</a></h2> +<p>Options related to federation.</p> +<hr /> +<h3 id="federation_domain_whitelist"><a class="header" href="#federation_domain_whitelist"><code>federation_domain_whitelist</code></a></h3> +<p>Restrict federation to the given whitelist of domains. +N.B. we recommend also firewalling your federation listener to limit +inbound federation traffic as early as possible, rather than relying +purely on this application-layer restriction. If not specified, the +default is to whitelist everything.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">federation_domain_whitelist: + - lon.example.com + - nyc.example.com + - syd.example.com +</code></pre> +<hr /> +<h3 id="federation_metrics_domains"><a class="header" href="#federation_metrics_domains"><code>federation_metrics_domains</code></a></h3> +<p>Report prometheus metrics on the age of PDUs being sent to and received from +the given domains. This can be used to give an idea of "delay" on inbound +and outbound federation, though be aware that any delay can be due to problems +at either end or with the intermediate network.</p> +<p>By default, no domains are monitored in this way.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">federation_metrics_domains: + - matrix.org + - example.com +</code></pre> +<hr /> +<h3 id="allow_profile_lookup_over_federation"><a class="header" href="#allow_profile_lookup_over_federation"><code>allow_profile_lookup_over_federation</code></a></h3> +<p>Set to false to disable profile lookup over federation. By default, the +Federation API allows other homeservers to obtain profile data of any user +on this homeserver.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">allow_profile_lookup_over_federation: false +</code></pre> +<hr /> +<h3 id="allow_device_name_lookup_over_federation"><a class="header" href="#allow_device_name_lookup_over_federation"><code>allow_device_name_lookup_over_federation</code></a></h3> +<p>Set this option to true to allow device display name lookup over federation. By default, the +Federation API prevents other homeservers from obtaining the display names of any user devices +on this homeserver.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">allow_device_name_lookup_over_federation: true +</code></pre> +<hr /> +<h2 id="caching"><a class="header" href="#caching">Caching</a></h2> +<p>Options related to caching.</p> +<hr /> +<h3 id="event_cache_size"><a class="header" href="#event_cache_size"><code>event_cache_size</code></a></h3> +<p>The number of events to cache in memory. Defaults to 10K. Like other caches, +this is affected by <code>caches.global_factor</code> (see below).</p> +<p>Note that this option is not part of the <code>caches</code> section.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">event_cache_size: 15K +</code></pre> +<hr /> +<h3 id="caches-and-associated-values"><a class="header" href="#caches-and-associated-values"><code>caches</code> and associated values</a></h3> +<p>A cache 'factor' is a multiplier that can be applied to each of +Synapse's caches in order to increase or decrease the maximum +number of entries that can be stored.</p> +<p><code>caches</code> can be configured through the following sub-options:</p> +<ul> +<li> +<p><code>global_factor</code>: Controls the global cache factor, which is the default cache factor +for all caches if a specific factor for that cache is not otherwise +set.</p> +<p>This can also be set by the <code>SYNAPSE_CACHE_FACTOR</code> environment +variable. Setting by environment variable takes priority over +setting through the config file.</p> +<p>Defaults to 0.5, which will halve the size of all caches.</p> +</li> +<li> +<p><code>per_cache_factors</code>: A dictionary of cache name to cache factor for that individual +cache. Overrides the global cache factor for a given cache.</p> +<p>These can also be set through environment variables comprised +of <code>SYNAPSE_CACHE_FACTOR_</code> + the name of the cache in capital +letters and underscores. Setting by environment variable +takes priority over setting through the config file. +Ex. <code>SYNAPSE_CACHE_FACTOR_GET_USERS_WHO_SHARE_ROOM_WITH_USER=2.0</code></p> +<p>Some caches have '*' and other characters that are not +alphanumeric or underscores. These caches can be named with or +without the special characters stripped. For example, to specify +the cache factor for <code>*stateGroupCache*</code> via an environment +variable would be <code>SYNAPSE_CACHE_FACTOR_STATEGROUPCACHE=2.0</code>.</p> +</li> +<li> +<p><code>expire_caches</code>: Controls whether cache entries are evicted after a specified time +period. Defaults to true. Set to false to disable this feature. Note that never expiring +caches may result in excessive memory usage.</p> +</li> +<li> +<p><code>cache_entry_ttl</code>: If <code>expire_caches</code> is enabled, this flag controls how long an entry can +be in a cache without having been accessed before being evicted. +Defaults to 30m.</p> +</li> +<li> +<p><code>sync_response_cache_duration</code>: Controls how long the results of a /sync request are +cached for after a successful response is returned. A higher duration can help clients +with intermittent connections, at the cost of higher memory usage. +A value of zero means that sync responses are not cached. +Defaults to 2m.</p> +<p><em>Changed in Synapse 1.62.0</em>: The default was changed from 0 to 2m.</p> +</li> +<li> +<p><code>cache_autotuning</code> and its sub-options <code>max_cache_memory_usage</code>, <code>target_cache_memory_usage</code>, and +<code>min_cache_ttl</code> work in conjunction with each other to maintain a balance between cache memory +usage and cache entry availability. You must be using <a href="../administration/admin_faq.html#help-synapse-is-slow-and-eats-all-my-ramcpu">jemalloc</a> +to utilize this option, and all three of the options must be specified for this feature to work. This option +defaults to off, enable it by providing values for the sub-options listed below. Please note that the feature will not work +and may cause unstable behavior (such as excessive emptying of caches or exceptions) if all of the values are not provided. +Please see the <a href="#config-conventions">Config Conventions</a> for information on how to specify memory size and cache expiry +durations.</p> +<ul> +<li><code>max_cache_memory_usage</code> sets a ceiling on how much memory the cache can use before caches begin to be continuously evicted. +They will continue to be evicted until the memory usage drops below the <code>target_memory_usage</code>, set in +the setting below, or until the <code>min_cache_ttl</code> is hit. There is no default value for this option.</li> +<li><code>target_memory_usage</code> sets a rough target for the desired memory usage of the caches. There is no default value +for this option.</li> +<li><code>min_cache_ttl</code> sets a limit under which newer cache entries are not evicted and is only applied when +caches are actively being evicted/<code>max_cache_memory_usage</code> has been exceeded. This is to protect hot caches +from being emptied while Synapse is evicting due to memory. There is no default value for this option.</li> +</ul> +</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">event_cache_size: 15K +caches: + global_factor: 1.0 + per_cache_factors: + get_users_who_share_room_with_user: 2.0 + sync_response_cache_duration: 2m + cache_autotuning: + max_cache_memory_usage: 1024M + target_cache_memory_usage: 758M + min_cache_ttl: 5m +</code></pre> +<h3 id="reloading-cache-factors"><a class="header" href="#reloading-cache-factors">Reloading cache factors</a></h3> +<p>The cache factors (i.e. <code>caches.global_factor</code> and <code>caches.per_cache_factors</code>) may be reloaded at any time by sending a +<a href="https://en.wikipedia.org/wiki/SIGHUP"><code>SIGHUP</code></a> signal to Synapse using e.g.</p> +<pre><code class="language-commandline">kill -HUP [PID_OF_SYNAPSE_PROCESS] +</code></pre> +<p>If you are running multiple workers, you must individually update the worker +config file and send this signal to each worker process.</p> +<p>If you're using the <a href="https://github.com/matrix-org/synapse/blob/develop/contrib/systemd/matrix-synapse.service">example systemd service</a> +file in Synapse's <code>contrib</code> directory, you can send a <code>SIGHUP</code> signal by using +<code>systemctl reload matrix-synapse</code>.</p> +<hr /> +<h2 id="database"><a class="header" href="#database">Database</a></h2> +<p>Config options related to database settings.</p> +<hr /> +<h3 id="database-1"><a class="header" href="#database-1"><code>database</code></a></h3> +<p>The <code>database</code> setting defines the database that synapse uses to store all of +its data.</p> +<p>Associated sub-options:</p> +<ul> +<li> +<p><code>name</code>: this option specifies the database engine to use: either <code>sqlite3</code> (for SQLite) +or <code>psycopg2</code> (for PostgreSQL). If no name is specified Synapse will default to SQLite.</p> +</li> +<li> +<p><code>txn_limit</code> gives the maximum number of transactions to run per connection +before reconnecting. Defaults to 0, which means no limit.</p> +</li> +<li> +<p><code>allow_unsafe_locale</code> is an option specific to Postgres. Under the default behavior, Synapse will refuse to +start if the postgres db is set to a non-C locale. You can override this behavior (which is <em>not</em> recommended) +by setting <code>allow_unsafe_locale</code> to true. Note that doing so may corrupt your database. You can find more information +<a href="../../postgres.html#fixing-incorrect-collate-or-ctype">here</a> and <a href="https://wiki.postgresql.org/wiki/Locale_data_changes">here</a>.</p> +</li> +<li> +<p><code>args</code> gives options which are passed through to the database engine, +except for options starting with <code>cp_</code>, which are used to configure the Twisted +connection pool. For a reference to valid arguments, see:</p> +<ul> +<li>for <a href="https://docs.python.org/3/library/sqlite3.html#sqlite3.connect">sqlite</a></li> +<li>for <a href="https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-PARAMKEYWORDS">postgres</a></li> +<li>for <a href="https://twistedmatrix.com/documents/current/api/twisted.enterprise.adbapi.ConnectionPool.html#__init__">the connection pool</a></li> +</ul> +</li> +</ul> +<p>For more information on using Synapse with Postgres, +see <a href="../../postgres.html">here</a>.</p> +<p>Example SQLite configuration:</p> +<pre><code class="language-yaml">database: + name: sqlite3 + args: + database: /path/to/homeserver.db +</code></pre> +<p>Example Postgres configuration:</p> +<pre><code class="language-yaml">database: + name: psycopg2 + txn_limit: 10000 + args: + user: synapse_user + password: secretpassword + database: synapse + host: localhost + port: 5432 + cp_min: 5 + cp_max: 10 +</code></pre> +<hr /> +<h3 id="databases"><a class="header" href="#databases"><code>databases</code></a></h3> +<p>The <code>databases</code> option allows specifying a mapping between certain database tables and +database host details, spreading the load of a single Synapse instance across multiple +database backends. This is often referred to as "database sharding". This option is only +supported for PostgreSQL database backends.</p> +<p><strong>Important note:</strong> This is a supported option, but is not currently used in production by the +Matrix.org Foundation. Proceed with caution and always make backups.</p> +<p><code>databases</code> is a dictionary of arbitrarily-named database entries. Each entry is equivalent +to the value of the <code>database</code> homeserver config option (see above), with the addition of +a <code>data_stores</code> key. <code>data_stores</code> is an array of strings that specifies the data store(s) +(a defined label for a set of tables) that should be stored on the associated database +backend entry.</p> +<p>The currently defined values for <code>data_stores</code> are:</p> +<ul> +<li> +<p><code>"state"</code>: Database that relates to state groups will be stored in this database.</p> +<p>Specifically, that means the following tables:</p> +<ul> +<li><code>state_groups</code></li> +<li><code>state_group_edges</code></li> +<li><code>state_groups_state</code></li> +</ul> +<p>And the following sequences:</p> +<ul> +<li><code>state_groups_seq_id</code></li> +</ul> +</li> +<li> +<p><code>"main"</code>: All other database tables and sequences.</p> +</li> +</ul> +<p>All databases will end up with additional tables used for tracking database schema migrations +and any pending background updates. Synapse will create these automatically on startup when checking for +and/or performing database schema migrations.</p> +<p>To migrate an existing database configuration (e.g. all tables on a single database) to a different +configuration (e.g. the "main" data store on one database, and "state" on another), do the following:</p> +<ol> +<li> +<p>Take a backup of your existing database. Things can and do go wrong and database corruption is no joke!</p> +</li> +<li> +<p>Ensure all pending database migrations have been applied and background updates have run. The simplest +way to do this is to use the <code>update_synapse_database</code> script supplied with your Synapse installation.</p> +<pre><code class="language-sh">update_synapse_database --database-config homeserver.yaml --run-background-updates +</code></pre> +</li> +<li> +<p>Copy over the necessary tables and sequences from one database to the other. Tables relating to database +migrations, schemas, schema versions and background updates should <strong>not</strong> be copied.</p> +<p>As an example, say that you'd like to split out the "state" data store from an existing database which +currently contains all data stores.</p> +<p>Simply copy the tables and sequences defined above for the "state" datastore from the existing database +to the secondary database. As noted above, additional tables will be created in the secondary database +when Synapse is started.</p> +</li> +<li> +<p>Modify/create the <code>databases</code> option in your <code>homeserver.yaml</code> to match the desired database configuration.</p> +</li> +<li> +<p>Start Synapse. Check that it starts up successfully and that things generally seem to be working.</p> +</li> +<li> +<p>Drop the old tables that were copied in step 3.</p> +</li> +</ol> +<p>Only one of the options <code>database</code> or <code>databases</code> may be specified in your config, but not both.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">databases: + basement_box: + name: psycopg2 + txn_limit: 10000 + data_stores: ["main"] + args: + user: synapse_user + password: secretpassword + database: synapse_main + host: localhost + port: 5432 + cp_min: 5 + cp_max: 10 + + my_other_database: + name: psycopg2 + txn_limit: 10000 + data_stores: ["state"] + args: + user: synapse_user + password: secretpassword + database: synapse_state + host: localhost + port: 5432 + cp_min: 5 + cp_max: 10 +</code></pre> +<hr /> +<h2 id="logging"><a class="header" href="#logging">Logging</a></h2> +<p>Config options related to logging.</p> +<hr /> +<h3 id="log_config"><a class="header" href="#log_config"><code>log_config</code></a></h3> +<p>This option specifies a yaml python logging config file as described +<a href="https://docs.python.org/3/library/logging.config.html#configuration-dictionary-schema">here</a>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">log_config: "CONFDIR/SERVERNAME.log.config" +</code></pre> +<hr /> +<h2 id="ratelimiting"><a class="header" href="#ratelimiting">Ratelimiting</a></h2> +<p>Options related to ratelimiting in Synapse.</p> +<p>Each ratelimiting configuration is made of two parameters:</p> +<ul> +<li><code>per_second</code>: number of requests a client can send per second.</li> +<li><code>burst_count</code>: number of requests a client can send before being throttled.</li> +</ul> +<hr /> +<h3 id="rc_message"><a class="header" href="#rc_message"><code>rc_message</code></a></h3> +<p>Ratelimiting settings for client messaging.</p> +<p>This is a ratelimiting option for messages that ratelimits sending based on the account the client +is using. It defaults to: <code>per_second: 0.2</code>, <code>burst_count: 10</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">rc_message: + per_second: 0.5 + burst_count: 15 +</code></pre> +<hr /> +<h3 id="rc_registration"><a class="header" href="#rc_registration"><code>rc_registration</code></a></h3> +<p>This option ratelimits registration requests based on the client's IP address. +It defaults to <code>per_second: 0.17</code>, <code>burst_count: 3</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">rc_registration: + per_second: 0.15 + burst_count: 2 +</code></pre> +<hr /> +<h3 id="rc_registration_token_validity"><a class="header" href="#rc_registration_token_validity"><code>rc_registration_token_validity</code></a></h3> +<p>This option checks the validity of registration tokens that ratelimits requests based on +the client's IP address. +Defaults to <code>per_second: 0.1</code>, <code>burst_count: 5</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">rc_registration_token_validity: + per_second: 0.3 + burst_count: 6 +</code></pre> +<hr /> +<h3 id="rc_login"><a class="header" href="#rc_login"><code>rc_login</code></a></h3> +<p>This option specifies several limits for login:</p> +<ul> +<li> +<p><code>address</code> ratelimits login requests based on the client's IP +address. Defaults to <code>per_second: 0.17</code>, <code>burst_count: 3</code>.</p> +</li> +<li> +<p><code>account</code> ratelimits login requests based on the account the +client is attempting to log into. Defaults to <code>per_second: 0.17</code>, +<code>burst_count: 3</code>.</p> +</li> +<li> +<p><code>failed_attempts</code> ratelimits login requests based on the account the +client is attempting to log into, based on the amount of failed login +attempts for this account. Defaults to <code>per_second: 0.17</code>, <code>burst_count: 3</code>.</p> +</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">rc_login: + address: + per_second: 0.15 + burst_count: 5 + account: + per_second: 0.18 + burst_count: 4 + failed_attempts: + per_second: 0.19 + burst_count: 7 +</code></pre> +<hr /> +<h3 id="rc_admin_redaction"><a class="header" href="#rc_admin_redaction"><code>rc_admin_redaction</code></a></h3> +<p>This option sets ratelimiting redactions by room admins. If this is not explicitly +set then it uses the same ratelimiting as per <code>rc_message</code>. This is useful +to allow room admins to deal with abuse quickly.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">rc_admin_redaction: + per_second: 1 + burst_count: 50 +</code></pre> +<hr /> +<h3 id="rc_joins"><a class="header" href="#rc_joins"><code>rc_joins</code></a></h3> +<p>This option allows for ratelimiting number of rooms a user can join. This setting has the following sub-options:</p> +<ul> +<li> +<p><code>local</code>: ratelimits when users are joining rooms the server is already in. +Defaults to <code>per_second: 0.1</code>, <code>burst_count: 10</code>.</p> +</li> +<li> +<p><code>remote</code>: ratelimits when users are trying to join rooms not on the server (which +can be more computationally expensive than restricting locally). Defaults to +<code>per_second: 0.01</code>, <code>burst_count: 10</code></p> +</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">rc_joins: + local: + per_second: 0.2 + burst_count: 15 + remote: + per_second: 0.03 + burst_count: 12 +</code></pre> +<hr /> +<h3 id="rc_joins_per_room"><a class="header" href="#rc_joins_per_room"><code>rc_joins_per_room</code></a></h3> +<p>This option allows admins to ratelimit joins to a room based on the number of recent +joins (local or remote) to that room. It is intended to mitigate mass-join spam +waves which target multiple homeservers.</p> +<p>By default, one join is permitted to a room every second, with an accumulating +buffer of up to ten instantaneous joins.</p> +<p>Example configuration (default values):</p> +<pre><code class="language-yaml">rc_joins_per_room: + per_second: 1 + burst_count: 10 +</code></pre> +<p><em>Added in Synapse 1.64.0.</em></p> +<hr /> +<h3 id="rc_3pid_validation"><a class="header" href="#rc_3pid_validation"><code>rc_3pid_validation</code></a></h3> +<p>This option ratelimits how often a user or IP can attempt to validate a 3PID. +Defaults to <code>per_second: 0.003</code>, <code>burst_count: 5</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">rc_3pid_validation: + per_second: 0.003 + burst_count: 5 +</code></pre> +<hr /> +<h3 id="rc_invites"><a class="header" href="#rc_invites"><code>rc_invites</code></a></h3> +<p>This option sets ratelimiting how often invites can be sent in a room or to a +specific user. <code>per_room</code> defaults to <code>per_second: 0.3</code>, <code>burst_count: 10</code> and +<code>per_user</code> defaults to <code>per_second: 0.003</code>, <code>burst_count: 5</code>.</p> +<p>Client requests that invite user(s) when <a href="https://spec.matrix.org/v1.2/client-server-api/#post_matrixclientv3createroom">creating a +room</a> +will count against the <code>rc_invites.per_room</code> limit, whereas +client requests to <a href="https://spec.matrix.org/v1.2/client-server-api/#post_matrixclientv3roomsroomidinvite">invite a single user to a +room</a> +will count against both the <code>rc_invites.per_user</code> and <code>rc_invites.per_room</code> limits.</p> +<p>Federation requests to invite a user will count against the <code>rc_invites.per_user</code> +limit only, as Synapse presumes ratelimiting by room will be done by the sending server.</p> +<p>The <code>rc_invites.per_user</code> limit applies to the <em>receiver</em> of the invite, rather than the +sender, meaning that a <code>rc_invite.per_user.burst_count</code> of 5 mandates that a single user +cannot <em>receive</em> more than a burst of 5 invites at a time.</p> +<p>In contrast, the <code>rc_invites.per_issuer</code> limit applies to the <em>issuer</em> of the invite, meaning that a <code>rc_invite.per_issuer.burst_count</code> of 5 mandates that single user cannot <em>send</em> more than a burst of 5 invites at a time.</p> +<p><em>Changed in version 1.63:</em> added the <code>per_issuer</code> limit.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">rc_invites: + per_room: + per_second: 0.5 + burst_count: 5 + per_user: + per_second: 0.004 + burst_count: 3 + per_issuer: + per_second: 0.5 + burst_count: 5 +</code></pre> +<hr /> +<h3 id="rc_third_party_invite"><a class="header" href="#rc_third_party_invite"><code>rc_third_party_invite</code></a></h3> +<p>This option ratelimits 3PID invites (i.e. invites sent to a third-party ID +such as an email address or a phone number) based on the account that's +sending the invite. Defaults to <code>per_second: 0.2</code>, <code>burst_count: 10</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">rc_third_party_invite: + per_second: 0.2 + burst_count: 10 +</code></pre> +<hr /> +<h3 id="rc_federation"><a class="header" href="#rc_federation"><code>rc_federation</code></a></h3> +<p>Defines limits on federation requests.</p> +<p>The <code>rc_federation</code> configuration has the following sub-options:</p> +<ul> +<li><code>window_size</code>: window size in milliseconds. Defaults to 1000.</li> +<li><code>sleep_limit</code>: number of federation requests from a single server in +a window before the server will delay processing the request. Defaults to 10.</li> +<li><code>sleep_delay</code>: duration in milliseconds to delay processing events +from remote servers by if they go over the sleep limit. Defaults to 500.</li> +<li><code>reject_limit</code>: maximum number of concurrent federation requests +allowed from a single server. Defaults to 50.</li> +<li><code>concurrent</code>: number of federation requests to concurrently process +from a single server. Defaults to 3.</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">rc_federation: + window_size: 750 + sleep_limit: 15 + sleep_delay: 400 + reject_limit: 40 + concurrent: 5 +</code></pre> +<hr /> +<h3 id="federation_rr_transactions_per_room_per_second"><a class="header" href="#federation_rr_transactions_per_room_per_second"><code>federation_rr_transactions_per_room_per_second</code></a></h3> +<p>Sets outgoing federation transaction frequency for sending read-receipts, +per-room.</p> +<p>If we end up trying to send out more read-receipts, they will get buffered up +into fewer transactions. Defaults to 50.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">federation_rr_transactions_per_room_per_second: 40 +</code></pre> +<hr /> +<h2 id="media-store"><a class="header" href="#media-store">Media Store</a></h2> +<p>Config options related to Synapse's media store.</p> +<hr /> +<h3 id="enable_media_repo"><a class="header" href="#enable_media_repo"><code>enable_media_repo</code></a></h3> +<p>Enable the media store service in the Synapse master. Defaults to true. +Set to false if you are using a separate media store worker.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">enable_media_repo: false +</code></pre> +<hr /> +<h3 id="media_store_path"><a class="header" href="#media_store_path"><code>media_store_path</code></a></h3> +<p>Directory where uploaded images and attachments are stored.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">media_store_path: "DATADIR/media_store" +</code></pre> +<hr /> +<h3 id="media_storage_providers"><a class="header" href="#media_storage_providers"><code>media_storage_providers</code></a></h3> +<p>Media storage providers allow media to be stored in different +locations. Defaults to none. Associated sub-options are:</p> +<ul> +<li><code>module</code>: type of resource, e.g. <code>file_system</code>.</li> +<li><code>store_local</code>: whether to store newly uploaded local files</li> +<li><code>store_remote</code>: whether to store newly downloaded local files</li> +<li><code>store_synchronous</code>: whether to wait for successful storage for local uploads</li> +<li><code>config</code>: sets a path to the resource through the <code>directory</code> option</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">media_storage_providers: + - module: file_system + store_local: false + store_remote: false + store_synchronous: false + config: + directory: /mnt/some/other/directory +</code></pre> +<hr /> +<h3 id="max_upload_size"><a class="header" href="#max_upload_size"><code>max_upload_size</code></a></h3> +<p>The largest allowed upload size in bytes.</p> +<p>If you are using a reverse proxy you may also need to set this value in +your reverse proxy's config. Defaults to 50M. Notably Nginx has a small max body size by default. +See <a href="../../reverse_proxy.html">here</a> for more on using a reverse proxy with Synapse.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">max_upload_size: 60M +</code></pre> +<hr /> +<h3 id="max_image_pixels"><a class="header" href="#max_image_pixels"><code>max_image_pixels</code></a></h3> +<p>Maximum number of pixels that will be thumbnailed. Defaults to 32M.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">max_image_pixels: 35M +</code></pre> +<hr /> +<h3 id="dynamic_thumbnails"><a class="header" href="#dynamic_thumbnails"><code>dynamic_thumbnails</code></a></h3> +<p>Whether to generate new thumbnails on the fly to precisely match +the resolution requested by the client. If true then whenever +a new resolution is requested by the client the server will +generate a new thumbnail. If false the server will pick a thumbnail +from a precalculated list. Defaults to false.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">dynamic_thumbnails: true +</code></pre> +<hr /> +<h3 id="thumbnail_sizes"><a class="header" href="#thumbnail_sizes"><code>thumbnail_sizes</code></a></h3> +<p>List of thumbnails to precalculate when an image is uploaded. Associated sub-options are:</p> +<ul> +<li><code>width</code></li> +<li><code>height</code></li> +<li><code>method</code>: i.e. <code>crop</code>, <code>scale</code>, etc.</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">thumbnail_sizes: + - width: 32 + height: 32 + method: crop + - width: 96 + height: 96 + method: crop + - width: 320 + height: 240 + method: scale + - width: 640 + height: 480 + method: scale + - width: 800 + height: 600 + method: scale +</code></pre> +<hr /> +<h3 id="media_retention"><a class="header" href="#media_retention"><code>media_retention</code></a></h3> +<p>Controls whether local media and entries in the remote media cache +(media that is downloaded from other homeservers) should be removed +under certain conditions, typically for the purpose of saving space.</p> +<p>Purging media files will be the carried out by the media worker +(that is, the worker that has the <code>enable_media_repo</code> homeserver config +option set to 'true'). This may be the main process.</p> +<p>The <code>media_retention.local_media_lifetime</code> and +<code>media_retention.remote_media_lifetime</code> config options control whether +media will be purged if it has not been accessed in a given amount of +time. Note that media is 'accessed' when loaded in a room in a client, or +otherwise downloaded by a local or remote user. If the media has never +been accessed, the media's creation time is used instead. Both thumbnails +and the original media will be removed. If either of these options are unset, +then media of that type will not be purged.</p> +<p>Local or cached remote media that has been +<a href="../../admin_api/media_admin_api.html#quarantining-media-in-a-room">quarantined</a> +will not be deleted. Similarly, local media that has been marked as +<a href="../../admin_api/media_admin_api.html#protecting-media-from-being-quarantined">protected from quarantine</a> +will not be deleted.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">media_retention: + local_media_lifetime: 90d + remote_media_lifetime: 14d +</code></pre> +<hr /> +<h3 id="url_preview_enabled"><a class="header" href="#url_preview_enabled"><code>url_preview_enabled</code></a></h3> +<p>This setting determines whether the preview URL API is enabled. +It is disabled by default. Set to true to enable. If enabled you must specify a +<code>url_preview_ip_range_blacklist</code> blacklist.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">url_preview_enabled: true +</code></pre> +<hr /> +<h3 id="url_preview_ip_range_blacklist"><a class="header" href="#url_preview_ip_range_blacklist"><code>url_preview_ip_range_blacklist</code></a></h3> +<p>List of IP address CIDR ranges that the URL preview spider is denied +from accessing. There are no defaults: you must explicitly +specify a list for URL previewing to work. You should specify any +internal services in your network that you do not want synapse to try +to connect to, otherwise anyone in any Matrix room could cause your +synapse to issue arbitrary GET requests to your internal services, +causing serious security issues.</p> +<p>(0.0.0.0 and :: are always blacklisted, whether or not they are explicitly +listed here, since they correspond to unroutable addresses.)</p> +<p>This must be specified if <code>url_preview_enabled</code> is set. It is recommended that +you use the following example list as a starting point.</p> +<p>Note: The value is ignored when an HTTP proxy is in use.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">url_preview_ip_range_blacklist: + - '127.0.0.0/8' + - '10.0.0.0/8' + - '172.16.0.0/12' + - '192.168.0.0/16' + - '100.64.0.0/10' + - '192.0.0.0/24' + - '169.254.0.0/16' + - '192.88.99.0/24' + - '198.18.0.0/15' + - '192.0.2.0/24' + - '198.51.100.0/24' + - '203.0.113.0/24' + - '224.0.0.0/4' + - '::1/128' + - 'fe80::/10' + - 'fc00::/7' + - '2001:db8::/32' + - 'ff00::/8' + - 'fec0::/10' +</code></pre> +<hr /> +<h3 id="url_preview_ip_range_whitelist"><a class="header" href="#url_preview_ip_range_whitelist"><code>url_preview_ip_range_whitelist</code></a></h3> +<p>This option sets a list of IP address CIDR ranges that the URL preview spider is allowed +to access even if they are specified in <code>url_preview_ip_range_blacklist</code>. +This is useful for specifying exceptions to wide-ranging blacklisted +target IP ranges - e.g. for enabling URL previews for a specific private +website only visible in your network. Defaults to none.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">url_preview_ip_range_whitelist: + - '192.168.1.1' +</code></pre> +<hr /> +<h3 id="url_preview_url_blacklist"><a class="header" href="#url_preview_url_blacklist"><code>url_preview_url_blacklist</code></a></h3> +<p>Optional list of URL matches that the URL preview spider is +denied from accessing. You should use <code>url_preview_ip_range_blacklist</code> +in preference to this, otherwise someone could define a public DNS +entry that points to a private IP address and circumvent the blacklist. +This is more useful if you know there is an entire shape of URL that +you know that will never want synapse to try to spider.</p> +<p>Each list entry is a dictionary of url component attributes as returned +by urlparse.urlsplit as applied to the absolute form of the URL. See +<a href="https://docs.python.org/2/library/urlparse.html#urlparse.urlsplit">here</a> for more +information. Some examples are:</p> +<ul> +<li><code>username</code></li> +<li><code>netloc</code></li> +<li><code>scheme</code></li> +<li><code>path</code></li> +</ul> +<p>The values of the dictionary are treated as a filename match pattern +applied to that component of URLs, unless they start with a ^ in which +case they are treated as a regular expression match. If all the +specified component matches for a given list item succeed, the URL is +blacklisted.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">url_preview_url_blacklist: + # blacklist any URL with a username in its URI + - username: '*' + + # blacklist all *.google.com URLs + - netloc: 'google.com' + - netloc: '*.google.com' + + # blacklist all plain HTTP URLs + - scheme: 'http' + + # blacklist http(s)://www.acme.com/foo + - netloc: 'www.acme.com' + path: '/foo' + + # blacklist any URL with a literal IPv4 address + - netloc: '^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$' +</code></pre> +<hr /> +<h3 id="max_spider_size"><a class="header" href="#max_spider_size"><code>max_spider_size</code></a></h3> +<p>The largest allowed URL preview spidering size in bytes. Defaults to 10M.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">max_spider_size: 8M +</code></pre> +<hr /> +<h3 id="url_preview_accept_language"><a class="header" href="#url_preview_accept_language"><code>url_preview_accept_language</code></a></h3> +<p>A list of values for the Accept-Language HTTP header used when +downloading webpages during URL preview generation. This allows +Synapse to specify the preferred languages that URL previews should +be in when communicating with remote servers.</p> +<p>Each value is a IETF language tag; a 2-3 letter identifier for a +language, optionally followed by subtags separated by '-', specifying +a country or region variant.</p> +<p>Multiple values can be provided, and a weight can be added to each by +using quality value syntax (;q=). '*' translates to any language.</p> +<p>Defaults to "en".</p> +<p>Example configuration:</p> +<pre><code class="language-yaml"> url_preview_accept_language: + - 'en-UK' + - 'en-US;q=0.9' + - 'fr;q=0.8' + - '*;q=0.7' +</code></pre> +<hr /> +<h3 id="oembed"><a class="header" href="#oembed"><code>oembed</code></a></h3> +<p>oEmbed allows for easier embedding content from a website. It can be +used for generating URLs previews of services which support it. A default list of oEmbed providers +is included with Synapse. Set <code>disable_default_providers</code> to true to disable using +these default oEmbed URLs. Use <code>additional_providers</code> to specify additional files with oEmbed configuration (each +should be in the form of providers.json). By default this list is empty.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">oembed: + disable_default_providers: true + additional_providers: + - oembed/my_providers.json +</code></pre> +<hr /> +<h2 id="captcha"><a class="header" href="#captcha">Captcha</a></h2> +<p>See <a href="../../CAPTCHA_SETUP.html">here</a> for full details on setting up captcha.</p> +<hr /> +<h3 id="recaptcha_public_key"><a class="header" href="#recaptcha_public_key"><code>recaptcha_public_key</code></a></h3> +<p>This homeserver's ReCAPTCHA public key. Must be specified if +<a href="#enable_registration_captcha"><code>enable_registration_captcha</code></a> is enabled.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">recaptcha_public_key: "YOUR_PUBLIC_KEY" +</code></pre> +<hr /> +<h3 id="recaptcha_private_key"><a class="header" href="#recaptcha_private_key"><code>recaptcha_private_key</code></a></h3> +<p>This homeserver's ReCAPTCHA private key. Must be specified if +<a href="#enable_registration_captcha"><code>enable_registration_captcha</code></a> is +enabled.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">recaptcha_private_key: "YOUR_PRIVATE_KEY" +</code></pre> +<hr /> +<h3 id="enable_registration_captcha"><a class="header" href="#enable_registration_captcha"><code>enable_registration_captcha</code></a></h3> +<p>Set to <code>true</code> to require users to complete a CAPTCHA test when registering an account. +Requires a valid ReCaptcha public/private key. +Defaults to <code>false</code>.</p> +<p>Note that <a href="#enable_registration"><code>enable_registration</code></a> must also be set to allow account registration.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">enable_registration_captcha: true +</code></pre> +<hr /> +<h3 id="recaptcha_siteverify_api"><a class="header" href="#recaptcha_siteverify_api"><code>recaptcha_siteverify_api</code></a></h3> +<p>The API endpoint to use for verifying <code>m.login.recaptcha</code> responses. +Defaults to <code>https://www.recaptcha.net/recaptcha/api/siteverify</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">recaptcha_siteverify_api: "https://my.recaptcha.site" +</code></pre> +<hr /> +<h2 id="turn"><a class="header" href="#turn">TURN</a></h2> +<p>Options related to adding a TURN server to Synapse.</p> +<hr /> +<h3 id="turn_uris"><a class="header" href="#turn_uris"><code>turn_uris</code></a></h3> +<p>The public URIs of the TURN server to give to clients.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">turn_uris: [turn:example.org] +</code></pre> +<hr /> +<h3 id="turn_shared_secret"><a class="header" href="#turn_shared_secret"><code>turn_shared_secret</code></a></h3> +<p>The shared secret used to compute passwords for the TURN server.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">turn_shared_secret: "YOUR_SHARED_SECRET" +</code></pre> +<hr /> +<h3 id="turn_username-and-turn_password"><a class="header" href="#turn_username-and-turn_password"><code>turn_username</code> and <code>turn_password</code></a></h3> +<p>The Username and password if the TURN server needs them and does not use a token.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">turn_username: "TURNSERVER_USERNAME" +turn_password: "TURNSERVER_PASSWORD" +</code></pre> +<hr /> +<h3 id="turn_user_lifetime"><a class="header" href="#turn_user_lifetime"><code>turn_user_lifetime</code></a></h3> +<p>How long generated TURN credentials last. Defaults to 1h.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">turn_user_lifetime: 2h +</code></pre> +<hr /> +<h3 id="turn_allow_guests"><a class="header" href="#turn_allow_guests"><code>turn_allow_guests</code></a></h3> +<p>Whether guests should be allowed to use the TURN server. This defaults to true, otherwise +VoIP will be unreliable for guests. However, it does introduce a slight security risk as +it allows users to connect to arbitrary endpoints without having first signed up for a valid account (e.g. by passing a CAPTCHA).</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">turn_allow_guests: false +</code></pre> +<hr /> +<h2 id="registration"><a class="header" href="#registration">Registration</a></h2> +<p>Registration can be rate-limited using the parameters in the <a href="#ratelimiting">Ratelimiting</a> section of this manual.</p> +<hr /> +<h3 id="enable_registration"><a class="header" href="#enable_registration"><code>enable_registration</code></a></h3> +<p>Enable registration for new users. Defaults to <code>false</code>.</p> +<p>It is highly recommended that if you enable registration, you set one or more +or the following options, to avoid abuse of your server by "bots":</p> +<ul> +<li><a href="#enable_registration_captcha"><code>enable_registration_captcha</code></a></li> +<li><a href="#registrations_require_3pid"><code>registrations_require_3pid</code></a></li> +<li><a href="#registration_requires_token"><code>registration_requires_token</code></a></li> +</ul> +<p>(In order to enable registration without any verification, you must also set +<a href="#enable_registration_without_verification"><code>enable_registration_without_verification</code></a>.)</p> +<p>Note that even if this setting is disabled, new accounts can still be created +via the admin API if +<a href="#registration_shared_secret"><code>registration_shared_secret</code></a> is set.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">enable_registration: true +</code></pre> +<hr /> +<h3 id="enable_registration_without_verification"><a class="header" href="#enable_registration_without_verification"><code>enable_registration_without_verification</code></a></h3> +<p>Enable registration without email or captcha verification. Note: this option is <em>not</em> recommended, +as registration without verification is a known vector for spam and abuse. Defaults to <code>false</code>. Has no effect +unless <a href="#enable_registration"><code>enable_registration</code></a> is also enabled.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">enable_registration_without_verification: true +</code></pre> +<hr /> +<h3 id="registrations_require_3pid"><a class="header" href="#registrations_require_3pid"><code>registrations_require_3pid</code></a></h3> +<p>If this is set, users must provide all of the specified types of 3PID when registering an account.</p> +<p>Note that <a href="#enable_registration"><code>enable_registration</code></a> must also be set to allow account registration.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">registrations_require_3pid: + - email + - msisdn +</code></pre> +<hr /> +<h3 id="disable_msisdn_registration"><a class="header" href="#disable_msisdn_registration"><code>disable_msisdn_registration</code></a></h3> +<p>Explicitly disable asking for MSISDNs from the registration +flow (overrides <code>registrations_require_3pid</code> if MSISDNs are set as required).</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">disable_msisdn_registration: true +</code></pre> +<hr /> +<h3 id="allowed_local_3pids"><a class="header" href="#allowed_local_3pids"><code>allowed_local_3pids</code></a></h3> +<p>Mandate that users are only allowed to associate certain formats of +3PIDs with accounts on this server, as specified by the <code>medium</code> and <code>pattern</code> sub-options.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">allowed_local_3pids: + - medium: email + pattern: '^[^@]+@matrix\.org$' + - medium: email + pattern: '^[^@]+@vector\.im$' + - medium: msisdn + pattern: '\+44' +</code></pre> +<hr /> +<h3 id="enable_3pid_lookup"><a class="header" href="#enable_3pid_lookup"><code>enable_3pid_lookup</code></a></h3> +<p>Enable 3PIDs lookup requests to identity servers from this server. Defaults to true.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">enable_3pid_lookup: false +</code></pre> +<hr /> +<h3 id="registration_requires_token"><a class="header" href="#registration_requires_token"><code>registration_requires_token</code></a></h3> +<p>Require users to submit a token during registration. +Tokens can be managed using the admin <a href="../administration/admin_api/registration_tokens.html">API</a>. +Disabling this option will not delete any tokens previously generated. +Defaults to <code>false</code>. Set to <code>true</code> to enable.</p> +<p>Note that <a href="#enable_registration"><code>enable_registration</code></a> must also be set to allow account registration.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">registration_requires_token: true +</code></pre> +<hr /> +<h3 id="registration_shared_secret"><a class="header" href="#registration_shared_secret"><code>registration_shared_secret</code></a></h3> +<p>If set, allows registration of standard or admin accounts by anyone who has the +shared secret, even if <a href="#enable_registration"><code>enable_registration</code></a> is not +set.</p> +<p>This is primarily intended for use with the <code>register_new_matrix_user</code> script +(see <a href="../../setup/installation.html#registering-a-user">Registering a user</a>); +however, the interface is <a href="../../admin_api/register_api.html">documented</a>.</p> +<p>See also <a href="#registration_shared_secret_path"><code>registration_shared_secret_path</code></a>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">registration_shared_secret: <PRIVATE STRING> +</code></pre> +<hr /> +<h3 id="registration_shared_secret_path"><a class="header" href="#registration_shared_secret_path"><code>registration_shared_secret_path</code></a></h3> +<p>An alternative to <a href="#registration_shared_secret"><code>registration_shared_secret</code></a>: +allows the shared secret to be specified in an external file.</p> +<p>The file should be a plain text file, containing only the shared secret.</p> +<p>If this file does not exist, Synapse will create a new signing +key on startup and store it in this file.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">registration_shared_secret_file: /path/to/secrets/file +</code></pre> +<p><em>Added in Synapse 1.67.0.</em></p> +<hr /> +<h3 id="bcrypt_rounds"><a class="header" href="#bcrypt_rounds"><code>bcrypt_rounds</code></a></h3> +<p>Set the number of bcrypt rounds used to generate password hash. +Larger numbers increase the work factor needed to generate the hash. +The default number is 12 (which equates to 2^12 rounds). +N.B. that increasing this will exponentially increase the time required +to register or login - e.g. 24 => 2^24 rounds which will take >20 mins. +Example configuration:</p> +<pre><code class="language-yaml">bcrypt_rounds: 14 +</code></pre> +<hr /> +<h3 id="allow_guest_access"><a class="header" href="#allow_guest_access"><code>allow_guest_access</code></a></h3> +<p>Allows users to register as guests without a password/email/etc, and +participate in rooms hosted on this server which have been made +accessible to anonymous users. Defaults to false.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">allow_guest_access: true +</code></pre> +<hr /> +<h3 id="default_identity_server"><a class="header" href="#default_identity_server"><code>default_identity_server</code></a></h3> +<p>The identity server which we suggest that clients should use when users log +in on this server.</p> +<p>(By default, no suggestion is made, so it is left up to the client. +This setting is ignored unless <code>public_baseurl</code> is also explicitly set.)</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">default_identity_server: https://matrix.org +</code></pre> +<hr /> +<h3 id="account_threepid_delegates"><a class="header" href="#account_threepid_delegates"><code>account_threepid_delegates</code></a></h3> +<p>Delegate verification of phone numbers to an identity server.</p> +<p>When a user wishes to add a phone number to their account, we need to verify that they +actually own that phone number, which requires sending them a text message (SMS). +Currently Synapse does not support sending those texts itself and instead delegates the +task to an identity server. The base URI for the identity server to be used is +specified by the <code>account_threepid_delegates.msisdn</code> option.</p> +<p>If this is left unspecified, Synapse will not allow users to add phone numbers to +their account.</p> +<p>(Servers handling the these requests must answer the <code>/requestToken</code> endpoints defined +by the Matrix Identity Service API +<a href="https://matrix.org/docs/spec/identity_service/latest">specification</a>.)</p> +<p><em>Deprecated in Synapse 1.64.0</em>: The <code>email</code> option is deprecated.</p> +<p><em>Removed in Synapse 1.66.0</em>: The <code>email</code> option has been removed. +If present, Synapse will report a configuration error on startup.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">account_threepid_delegates: + msisdn: http://localhost:8090 # Delegate SMS sending to this local process +</code></pre> +<hr /> +<h3 id="enable_set_displayname"><a class="header" href="#enable_set_displayname"><code>enable_set_displayname</code></a></h3> +<p>Whether users are allowed to change their displayname after it has +been initially set. Useful when provisioning users based on the +contents of a third-party directory.</p> +<p>Does not apply to server administrators. Defaults to true.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">enable_set_displayname: false +</code></pre> +<hr /> +<h3 id="enable_set_avatar_url"><a class="header" href="#enable_set_avatar_url"><code>enable_set_avatar_url</code></a></h3> +<p>Whether users are allowed to change their avatar after it has been +initially set. Useful when provisioning users based on the contents +of a third-party directory.</p> +<p>Does not apply to server administrators. Defaults to true.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">enable_set_avatar_url: false +</code></pre> +<hr /> +<h3 id="enable_3pid_changes"><a class="header" href="#enable_3pid_changes"><code>enable_3pid_changes</code></a></h3> +<p>Whether users can change the third-party IDs associated with their accounts +(email address and msisdn).</p> +<p>Defaults to true.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">enable_3pid_changes: false +</code></pre> +<hr /> +<h3 id="auto_join_rooms"><a class="header" href="#auto_join_rooms"><code>auto_join_rooms</code></a></h3> +<p>Users who register on this homeserver will automatically be joined +to the rooms listed under this option.</p> +<p>By default, any room aliases included in this list will be created +as a publicly joinable room when the first user registers for the +homeserver. If the room already exists, make certain it is a publicly joinable +room, i.e. the join rule of the room must be set to 'public'. You can find more options +relating to auto-joining rooms below.</p> +<p>As Spaces are just rooms under the hood, Space aliases may also be +used.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">auto_join_rooms: + - "#exampleroom:example.com" + - "#anotherexampleroom:example.com" +</code></pre> +<hr /> +<h3 id="autocreate_auto_join_rooms"><a class="header" href="#autocreate_auto_join_rooms"><code>autocreate_auto_join_rooms</code></a></h3> +<p>Where <code>auto_join_rooms</code> are specified, setting this flag ensures that +the rooms exist by creating them when the first user on the +homeserver registers. This option will not create Spaces.</p> +<p>By default the auto-created rooms are publicly joinable from any federated +server. Use the <code>autocreate_auto_join_rooms_federated</code> and +<code>autocreate_auto_join_room_preset</code> settings to customise this behaviour.</p> +<p>Setting to false means that if the rooms are not manually created, +users cannot be auto-joined since they do not exist.</p> +<p>Defaults to true.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">autocreate_auto_join_rooms: false +</code></pre> +<hr /> +<h3 id="autocreate_auto_join_rooms_federated"><a class="header" href="#autocreate_auto_join_rooms_federated"><code>autocreate_auto_join_rooms_federated</code></a></h3> +<p>Whether the rooms listed in <code>auto_join_rooms</code> that are auto-created are available +via federation. Only has an effect if <code>autocreate_auto_join_rooms</code> is true.</p> +<p>Note that whether a room is federated cannot be modified after +creation.</p> +<p>Defaults to true: the room will be joinable from other servers. +Set to false to prevent users from other homeservers from +joining these rooms.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">autocreate_auto_join_rooms_federated: false +</code></pre> +<hr /> +<h3 id="autocreate_auto_join_room_preset"><a class="header" href="#autocreate_auto_join_room_preset"><code>autocreate_auto_join_room_preset</code></a></h3> +<p>The room preset to use when auto-creating one of <code>auto_join_rooms</code>. Only has an +effect if <code>autocreate_auto_join_rooms</code> is true.</p> +<p>Possible values for this option are:</p> +<ul> +<li>"public_chat": the room is joinable by anyone, including +federated servers if <code>autocreate_auto_join_rooms_federated</code> is true (the default).</li> +<li>"private_chat": an invitation is required to join these rooms.</li> +<li>"trusted_private_chat": an invitation is required to join this room and the invitee is +assigned a power level of 100 upon joining the room.</li> +</ul> +<p>If a value of "private_chat" or "trusted_private_chat" is used then +<code>auto_join_mxid_localpart</code> must also be configured.</p> +<p>Defaults to "public_chat".</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">autocreate_auto_join_room_preset: private_chat +</code></pre> +<hr /> +<h3 id="auto_join_mxid_localpart"><a class="header" href="#auto_join_mxid_localpart"><code>auto_join_mxid_localpart</code></a></h3> +<p>The local part of the user id which is used to create <code>auto_join_rooms</code> if +<code>autocreate_auto_join_rooms</code> is true. If this is not provided then the +initial user account that registers will be used to create the rooms.</p> +<p>The user id is also used to invite new users to any auto-join rooms which +are set to invite-only.</p> +<p>It <em>must</em> be configured if <code>autocreate_auto_join_room_preset</code> is set to +"private_chat" or "trusted_private_chat".</p> +<p>Note that this must be specified in order for new users to be correctly +invited to any auto-join rooms which have been set to invite-only (either +at the time of creation or subsequently).</p> +<p>Note that, if the room already exists, this user must be joined and +have the appropriate permissions to invite new members.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">auto_join_mxid_localpart: system +</code></pre> +<hr /> +<h3 id="auto_join_rooms_for_guests"><a class="header" href="#auto_join_rooms_for_guests"><code>auto_join_rooms_for_guests</code></a></h3> +<p>When <code>auto_join_rooms</code> is specified, setting this flag to false prevents +guest accounts from being automatically joined to the rooms.</p> +<p>Defaults to true.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">auto_join_rooms_for_guests: false +</code></pre> +<hr /> +<h3 id="inhibit_user_in_use_error"><a class="header" href="#inhibit_user_in_use_error"><code>inhibit_user_in_use_error</code></a></h3> +<p>Whether to inhibit errors raised when registering a new account if the user ID +already exists. If turned on, requests to <code>/register/available</code> will always +show a user ID as available, and Synapse won't raise an error when starting +a registration with a user ID that already exists. However, Synapse will still +raise an error if the registration completes and the username conflicts.</p> +<p>Defaults to false.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">inhibit_user_in_use_error: true +</code></pre> +<hr /> +<h2 id="user-session-management"><a class="header" href="#user-session-management">User session management</a></h2> +<hr /> +<h3 id="session_lifetime"><a class="header" href="#session_lifetime"><code>session_lifetime</code></a></h3> +<p>Time that a user's session remains valid for, after they log in.</p> +<p>Note that this is not currently compatible with guest logins.</p> +<p>Note also that this is calculated at login time: changes are not applied retrospectively to users who have already +logged in.</p> +<p>By default, this is infinite.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">session_lifetime: 24h +</code></pre> +<hr /> +<h3 id="refresh_access_token_lifetime"><a class="header" href="#refresh_access_token_lifetime"><code>refresh_access_token_lifetime</code></a></h3> +<p>Time that an access token remains valid for, if the session is using refresh tokens.</p> +<p>For more information about refresh tokens, please see the <a href="user_authentication/refresh_tokens.html">manual</a>.</p> +<p>Note that this only applies to clients which advertise support for refresh tokens.</p> +<p>Note also that this is calculated at login time and refresh time: changes are not applied to +existing sessions until they are refreshed.</p> +<p>By default, this is 5 minutes.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">refreshable_access_token_lifetime: 10m +</code></pre> +<hr /> +<h3 id="refresh_token_lifetime-24h"><a class="header" href="#refresh_token_lifetime-24h"><code>refresh_token_lifetime: 24h</code></a></h3> +<p>Time that a refresh token remains valid for (provided that it is not +exchanged for another one first). +This option can be used to automatically log-out inactive sessions. +Please see the manual for more information.</p> +<p>Note also that this is calculated at login time and refresh time: +changes are not applied to existing sessions until they are refreshed.</p> +<p>By default, this is infinite.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">refresh_token_lifetime: 24h +</code></pre> +<hr /> +<h3 id="nonrefreshable_access_token_lifetime"><a class="header" href="#nonrefreshable_access_token_lifetime"><code>nonrefreshable_access_token_lifetime</code></a></h3> +<p>Time that an access token remains valid for, if the session is NOT +using refresh tokens.</p> +<p>Please note that not all clients support refresh tokens, so setting +this to a short value may be inconvenient for some users who will +then be logged out frequently.</p> +<p>Note also that this is calculated at login time: changes are not applied +retrospectively to existing sessions for users that have already logged in.</p> +<p>By default, this is infinite.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">nonrefreshable_access_token_lifetime: 24h +</code></pre> +<hr /> +<h2 id="metrics"><a class="header" href="#metrics">Metrics</a></h2> +<p>Config options related to metrics.</p> +<hr /> +<h3 id="enable_metrics"><a class="header" href="#enable_metrics"><code>enable_metrics</code></a></h3> +<p>Set to true to enable collection and rendering of performance metrics. +Defaults to false.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">enable_metrics: true +</code></pre> +<hr /> +<h3 id="sentry"><a class="header" href="#sentry"><code>sentry</code></a></h3> +<p>Use this option to enable sentry integration. Provide the DSN assigned to you by sentry +with the <code>dsn</code> setting.</p> +<p>NOTE: While attempts are made to ensure that the logs don't contain +any sensitive information, this cannot be guaranteed. By enabling +this option the sentry server may therefore receive sensitive +information, and it in turn may then disseminate sensitive information +through insecure notification channels if so configured.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">sentry: + dsn: "..." +</code></pre> +<hr /> +<h3 id="metrics_flags"><a class="header" href="#metrics_flags"><code>metrics_flags</code></a></h3> +<p>Flags to enable Prometheus metrics which are not suitable to be +enabled by default, either for performance reasons or limited use. +Currently the only option is <code>known_servers</code>, which publishes +<code>synapse_federation_known_servers</code>, a gauge of the number of +servers this homeserver knows about, including itself. May cause +performance problems on large homeservers.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">metrics_flags: + known_servers: true +</code></pre> +<hr /> +<h3 id="report_stats"><a class="header" href="#report_stats"><code>report_stats</code></a></h3> +<p>Whether or not to report homeserver usage statistics. This is originally +set when generating the config. Set this option to true or false to change the current +behavior. See +<a href="../administration/monitoring/reporting_homeserver_usage_statistics.html">Reporting Homeserver Usage Statistics</a> +for information on what data is reported.</p> +<p>Statistics will be reported 5 minutes after Synapse starts, and then every 3 hours +after that.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">report_stats: true +</code></pre> +<hr /> +<h3 id="report_stats_endpoint"><a class="header" href="#report_stats_endpoint"><code>report_stats_endpoint</code></a></h3> +<p>The endpoint to report homeserver usage statistics to. +Defaults to https://matrix.org/report-usage-stats/push</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">report_stats_endpoint: https://example.com/report-usage-stats/push +</code></pre> +<hr /> +<h2 id="api-configuration"><a class="header" href="#api-configuration">API Configuration</a></h2> +<p>Config settings related to the client/server API</p> +<hr /> +<h3 id="room_prejoin_state"><a class="header" href="#room_prejoin_state"><code>room_prejoin_state</code></a></h3> +<p>This setting controls the state that is shared with users upon receiving an +invite to a room, or in reply to a knock on a room. By default, the following +state events are shared with users:</p> +<ul> +<li><code>m.room.join_rules</code></li> +<li><code>m.room.canonical_alias</code></li> +<li><code>m.room.avatar</code></li> +<li><code>m.room.encryption</code></li> +<li><code>m.room.name</code></li> +<li><code>m.room.create</code></li> +<li><code>m.room.topic</code></li> +</ul> +<p>To change the default behavior, use the following sub-options:</p> +<ul> +<li> +<p><code>disable_default_event_types</code>: boolean. Set to <code>true</code> to disable the above +defaults. If this is enabled, only the event types listed in +<code>additional_event_types</code> are shared. Defaults to <code>false</code>.</p> +</li> +<li> +<p><code>additional_event_types</code>: A list of additional state events to include in the +events to be shared. By default, this list is empty (so only the default event +types are shared).</p> +<p>Each entry in this list should be either a single string or a list of two +strings. </p> +<ul> +<li>A standalone string <code>t</code> represents all events with type <code>t</code> (i.e. +with no restrictions on state keys).</li> +<li>A pair of strings <code>[t, s]</code> represents a single event with type <code>t</code> and +state key <code>s</code>. The same type can appear in two entries with different state +keys: in this situation, both state keys are included in prejoin state.</li> +</ul> +</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">room_prejoin_state: + disable_default_event_types: false + additional_event_types: + # Share all events of type `org.example.custom.event.typeA` + - org.example.custom.event.typeA + # Share only events of type `org.example.custom.event.typeB` whose + # state_key is "foo" + - ["org.example.custom.event.typeB", "foo"] + # Share only events of type `org.example.custom.event.typeC` whose + # state_key is "bar" or "baz" + - ["org.example.custom.event.typeC", "bar"] + - ["org.example.custom.event.typeC", "baz"] +</code></pre> +<p><em>Changed in Synapse 1.74:</em> admins can filter the events in prejoin state based +on their state key.</p> +<hr /> +<h3 id="track_puppeted_user_ips"><a class="header" href="#track_puppeted_user_ips"><code>track_puppeted_user_ips</code></a></h3> +<p>We record the IP address of clients used to access the API for various +reasons, including displaying it to the user in the "Where you're signed in" +dialog.</p> +<p>By default, when puppeting another user via the admin API, the client IP +address is recorded against the user who created the access token (ie, the +admin user), and <em>not</em> the puppeted user.</p> +<p>Set this option to true to also record the IP address against the puppeted +user. (This also means that the puppeted user will count as an "active" user +for the purpose of monthly active user tracking - see <code>limit_usage_by_mau</code> etc +above.)</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">track_puppeted_user_ips: true +</code></pre> +<hr /> +<h3 id="app_service_config_files"><a class="header" href="#app_service_config_files"><code>app_service_config_files</code></a></h3> +<p>A list of application service config files to use.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">app_service_config_files: + - app_service_1.yaml + - app_service_2.yaml +</code></pre> +<hr /> +<h3 id="track_appservice_user_ips"><a class="header" href="#track_appservice_user_ips"><code>track_appservice_user_ips</code></a></h3> +<p>Defaults to false. Set to true to enable tracking of application service IP addresses. +Implicitly enables MAU tracking for application service users.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">track_appservice_user_ips: true +</code></pre> +<hr /> +<h3 id="macaroon_secret_key"><a class="header" href="#macaroon_secret_key"><code>macaroon_secret_key</code></a></h3> +<p>A secret which is used to sign</p> +<ul> +<li>access token for guest users,</li> +<li>short-term login token used during SSO logins (OIDC or SAML2) and</li> +<li>token used for unsubscribing from email notifications.</li> +</ul> +<p>If none is specified, the <code>registration_shared_secret</code> is used, if one is given; +otherwise, a secret key is derived from the signing key.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">macaroon_secret_key: <PRIVATE STRING> +</code></pre> +<hr /> +<h3 id="form_secret"><a class="header" href="#form_secret"><code>form_secret</code></a></h3> +<p>A secret which is used to calculate HMACs for form values, to stop +falsification of values. Must be specified for the User Consent +forms to work.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">form_secret: <PRIVATE STRING> +</code></pre> +<hr /> +<h2 id="signing-keys"><a class="header" href="#signing-keys">Signing Keys</a></h2> +<p>Config options relating to signing keys</p> +<hr /> +<h3 id="signing_key_path"><a class="header" href="#signing_key_path"><code>signing_key_path</code></a></h3> +<p>Path to the signing key to sign events and federation requests with.</p> +<p><em>New in Synapse 1.67</em>: If this file does not exist, Synapse will create a new signing +key on startup and store it in this file.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">signing_key_path: "CONFDIR/SERVERNAME.signing.key" +</code></pre> +<hr /> +<h3 id="old_signing_keys"><a class="header" href="#old_signing_keys"><code>old_signing_keys</code></a></h3> +<p>The keys that the server used to sign messages with but won't use +to sign new messages. For each key, <code>key</code> should be the base64-encoded public key, and +<code>expired_ts</code>should be the time (in milliseconds since the unix epoch) that +it was last used.</p> +<p>It is possible to build an entry from an old <code>signing.key</code> file using the +<code>export_signing_key</code> script which is provided with synapse.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">old_signing_keys: + "ed25519:id": { key: "base64string", expired_ts: 123456789123 } +</code></pre> +<hr /> +<h3 id="key_refresh_interval"><a class="header" href="#key_refresh_interval"><code>key_refresh_interval</code></a></h3> +<p>How long key response published by this server is valid for. +Used to set the <code>valid_until_ts</code> in <code>/key/v2</code> APIs. +Determines how quickly servers will query to check which keys +are still valid. Defaults to 1d.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">key_refresh_interval: 2d +</code></pre> +<hr /> +<h3 id="trusted_key_servers"><a class="header" href="#trusted_key_servers"><code>trusted_key_servers</code></a></h3> +<p>The trusted servers to download signing keys from.</p> +<p>When we need to fetch a signing key, each server is tried in parallel.</p> +<p>Normally, the connection to the key server is validated via TLS certificates. +Additional security can be provided by configuring a <code>verify key</code>, which +will make synapse check that the response is signed by that key.</p> +<p>This setting supercedes an older setting named <code>perspectives</code>. The old format +is still supported for backwards-compatibility, but it is deprecated.</p> +<p><code>trusted_key_servers</code> defaults to matrix.org, but using it will generate a +warning on start-up. To suppress this warning, set +<code>suppress_key_server_warning</code> to true.</p> +<p>If the use of a trusted key server has to be deactivated, e.g. in a private +federation or for privacy reasons, this can be realised by setting +an empty array (<code>trusted_key_servers: []</code>). Then Synapse will request the keys +directly from the server that owns the keys. If Synapse does not get keys directly +from the server, the events of this server will be rejected.</p> +<p>Options for each entry in the list include:</p> +<ul> +<li><code>server_name</code>: the name of the server. Required.</li> +<li><code>verify_keys</code>: an optional map from key id to base64-encoded public key. +If specified, we will check that the response is signed by at least +one of the given keys.</li> +<li><code>accept_keys_insecurely</code>: a boolean. Normally, if <code>verify_keys</code> is unset, +and <code>federation_verify_certificates</code> is not <code>true</code>, synapse will refuse +to start, because this would allow anyone who can spoof DNS responses +to masquerade as the trusted key server. If you know what you are doing +and are sure that your network environment provides a secure connection +to the key server, you can set this to <code>true</code> to override this behaviour.</li> +</ul> +<p>Example configuration #1:</p> +<pre><code class="language-yaml">trusted_key_servers: + - server_name: "my_trusted_server.example.com" + verify_keys: + "ed25519:auto": "abcdefghijklmnopqrstuvwxyzabcdefghijklmopqr" + - server_name: "my_other_trusted_server.example.com" +</code></pre> +<p>Example configuration #2:</p> +<pre><code class="language-yaml">trusted_key_servers: + - server_name: "matrix.org" +</code></pre> +<hr /> +<h3 id="suppress_key_server_warning"><a class="header" href="#suppress_key_server_warning"><code>suppress_key_server_warning</code></a></h3> +<p>Set the following to true to disable the warning that is emitted when the +<code>trusted_key_servers</code> include 'matrix.org'. See above.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">suppress_key_server_warning: true +</code></pre> +<hr /> +<h3 id="key_server_signing_keys_path"><a class="header" href="#key_server_signing_keys_path"><code>key_server_signing_keys_path</code></a></h3> +<p>The signing keys to use when acting as a trusted key server. If not specified +defaults to the server signing key.</p> +<p>Can contain multiple keys, one per line.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">key_server_signing_keys_path: "key_server_signing_keys.key" +</code></pre> +<hr /> +<h2 id="single-sign-on-integration"><a class="header" href="#single-sign-on-integration">Single sign-on integration</a></h2> +<p>The following settings can be used to make Synapse use a single sign-on +provider for authentication, instead of its internal password database.</p> +<p>You will probably also want to set the following options to <code>false</code> to +disable the regular login/registration flows:</p> +<ul> +<li><a href="#enable_registration"><code>enable_registration</code></a></li> +<li><a href="#password_config"><code>password_config.enabled</code></a></li> +</ul> +<hr /> +<h3 id="saml2_config"><a class="header" href="#saml2_config"><code>saml2_config</code></a></h3> +<p>Enable SAML2 for registration and login. Uses pysaml2. To learn more about pysaml and +to find a full list options for configuring pysaml, read the docs <a href="https://pysaml2.readthedocs.io/en/latest/">here</a>.</p> +<p>At least one of <code>sp_config</code> or <code>config_path</code> must be set in this section to +enable SAML login. You can either put your entire pysaml config inline using the <code>sp_config</code> +option, or you can specify a path to a psyaml config file with the sub-option <code>config_path</code>. +This setting has the following sub-options:</p> +<ul> +<li><code>sp_config</code>: the configuration for the pysaml2 Service Provider. See pysaml2 docs for format of config. +Default values will be used for the <code>entityid</code> and <code>service</code> settings, +so it is not normally necessary to specify them unless you need to +override them. Here are a few useful sub-options for configuring pysaml: +<ul> +<li><code>metadata</code>: Point this to the IdP's metadata. You must provide either a local +file via the <code>local</code> attribute or (preferably) a URL via the +<code>remote</code> attribute.</li> +<li><code>accepted_time_diff: 3</code>: Allowed clock difference in seconds between the homeserver and IdP. +Defaults to 0.</li> +<li><code>service</code>: By default, the user has to go to our login page first. If you'd like +to allow IdP-initiated login, set <code>allow_unsolicited</code> to true under <code>sp</code> in the <code>service</code> +section.</li> +</ul> +</li> +<li><code>config_path</code>: specify a separate pysaml2 configuration file thusly: +<code>config_path: "CONFDIR/sp_conf.py"</code></li> +<li><code>saml_session_lifetime</code>: The lifetime of a SAML session. This defines how long a user has to +complete the authentication process, if <code>allow_unsolicited</code> is unset. The default is 15 minutes.</li> +<li><code>user_mapping_provider</code>: Using this option, an external module can be provided as a +custom solution to mapping attributes returned from a saml provider onto a matrix user. The +<code>user_mapping_provider</code> has the following attributes: +<ul> +<li><code>module</code>: The custom module's class.</li> +<li><code>config</code>: Custom configuration values for the module. Use the values provided in the +example if you are using the built-in user_mapping_provider, or provide your own +config values for a custom class if you are using one. This section will be passed as a Python +dictionary to the module's <code>parse_config</code> method. The built-in provider takes the following two +options: +<ul> +<li><code>mxid_source_attribute</code>: The SAML attribute (after mapping via the attribute maps) to use +to derive the Matrix ID from. It is 'uid' by default. Note: This used to be configured by the +<code>saml2_config.mxid_source_attribute option</code>. If that is still defined, its value will be used instead.</li> +<li><code>mxid_mapping</code>: The mapping system to use for mapping the saml attribute onto a +matrix ID. Options include: <code>hexencode</code> (which maps unpermitted characters to '=xx') +and <code>dotreplace</code> (which replaces unpermitted characters with '.'). +The default is <code>hexencode</code>. Note: This used to be configured by the +<code>saml2_config.mxid_mapping option</code>. If that is still defined, its value will be used instead.</li> +</ul> +</li> +</ul> +</li> +<li><code>grandfathered_mxid_source_attribute</code>: In previous versions of synapse, the mapping from SAML attribute to +MXID was always calculated dynamically rather than stored in a table. For backwards- compatibility, we will look for <code>user_ids</code> +matching such a pattern before creating a new account. This setting controls the SAML attribute which will be used for this +backwards-compatibility lookup. Typically it should be 'uid', but if the attribute maps are changed, it may be necessary to change it. +The default is 'uid'.</li> +<li><code>attribute_requirements</code>: It is possible to configure Synapse to only allow logins if SAML attributes +match particular values. The requirements can be listed under +<code>attribute_requirements</code> as shown in the example. All of the listed attributes must +match for the login to be permitted.</li> +<li><code>idp_entityid</code>: If the metadata XML contains multiple IdP entities then the <code>idp_entityid</code> +option must be set to the entity to redirect users to. +Most deployments only have a single IdP entity and so should omit this option.</li> +</ul> +<p>Once SAML support is enabled, a metadata file will be exposed at +<code>https://<server>:<port>/_synapse/client/saml2/metadata.xml</code>, which you may be able to +use to configure your SAML IdP with. Alternatively, you can manually configure +the IdP to use an ACS location of +<code>https://<server>:<port>/_synapse/client/saml2/authn_response</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">saml2_config: + sp_config: + metadata: + local: ["saml2/idp.xml"] + remote: + - url: https://our_idp/metadata.xml + accepted_time_diff: 3 + + service: + sp: + allow_unsolicited: true + + # The examples below are just used to generate our metadata xml, and you + # may well not need them, depending on your setup. Alternatively you + # may need a whole lot more detail - see the pysaml2 docs! + description: ["My awesome SP", "en"] + name: ["Test SP", "en"] + + ui_info: + display_name: + - lang: en + text: "Display Name is the descriptive name of your service." + description: + - lang: en + text: "Description should be a short paragraph explaining the purpose of the service." + information_url: + - lang: en + text: "https://example.com/terms-of-service" + privacy_statement_url: + - lang: en + text: "https://example.com/privacy-policy" + keywords: + - lang: en + text: ["Matrix", "Element"] + logo: + - lang: en + text: "https://example.com/logo.svg" + width: "200" + height: "80" + + organization: + name: Example com + display_name: + - ["Example co", "en"] + url: "http://example.com" + + contact_person: + - given_name: Bob + sur_name: "the Sysadmin" + email_address": ["admin@example.com"] + contact_type": technical + + saml_session_lifetime: 5m + + user_mapping_provider: + # Below options are intended for the built-in provider, they should be + # changed if using a custom module. + config: + mxid_source_attribute: displayName + mxid_mapping: dotreplace + + grandfathered_mxid_source_attribute: upn + + attribute_requirements: + - attribute: userGroup + value: "staff" + - attribute: department + value: "sales" + + idp_entityid: 'https://our_idp/entityid' +</code></pre> +<hr /> +<h3 id="oidc_providers"><a class="header" href="#oidc_providers"><code>oidc_providers</code></a></h3> +<p>List of OpenID Connect (OIDC) / OAuth 2.0 identity providers, for registration +and login. See <a href="../../openid.html">here</a> +for information on how to configure these options.</p> +<p>For backwards compatibility, it is also possible to configure a single OIDC +provider via an <code>oidc_config</code> setting. This is now deprecated and admins are +advised to migrate to the <code>oidc_providers</code> format. (When doing that migration, +use <code>oidc</code> for the <code>idp_id</code> to ensure that existing users continue to be +recognised.)</p> +<p>Options for each entry include:</p> +<ul> +<li> +<p><code>idp_id</code>: a unique identifier for this identity provider. Used internally +by Synapse; should be a single word such as 'github'. +Note that, if this is changed, users authenticating via that provider +will no longer be recognised as the same user! +(Use "oidc" here if you are migrating from an old <code>oidc_config</code> configuration.)</p> +</li> +<li> +<p><code>idp_name</code>: A user-facing name for this identity provider, which is used to +offer the user a choice of login mechanisms.</p> +</li> +<li> +<p><code>idp_icon</code>: An optional icon for this identity provider, which is presented +by clients and Synapse's own IdP picker page. If given, must be an +MXC URI of the format mxc://<server-name>/<media-id>. (An easy way to +obtain such an MXC URI is to upload an image to an (unencrypted) room +and then copy the "url" from the source of the event.)</p> +</li> +<li> +<p><code>idp_brand</code>: An optional brand for this identity provider, allowing clients +to style the login flow according to the identity provider in question. +See the <a href="https://spec.matrix.org/latest/">spec</a> for possible options here.</p> +</li> +<li> +<p><code>discover</code>: set to false to disable the use of the OIDC discovery mechanism +to discover endpoints. Defaults to true.</p> +</li> +<li> +<p><code>issuer</code>: Required. The OIDC issuer. Used to validate tokens and (if discovery +is enabled) to discover the provider's endpoints.</p> +</li> +<li> +<p><code>client_id</code>: Required. oauth2 client id to use.</p> +</li> +<li> +<p><code>client_secret</code>: oauth2 client secret to use. May be omitted if +<code>client_secret_jwt_key</code> is given, or if <code>client_auth_method</code> is 'none'.</p> +</li> +<li> +<p><code>client_secret_jwt_key</code>: Alternative to client_secret: details of a key used +to create a JSON Web Token to be used as an OAuth2 client secret. If +given, must be a dictionary with the following properties:</p> +<ul> +<li> +<p><code>key</code>: a pem-encoded signing key. Must be a suitable key for the +algorithm specified. Required unless <code>key_file</code> is given.</p> +</li> +<li> +<p><code>key_file</code>: the path to file containing a pem-encoded signing key file. +Required unless <code>key</code> is given.</p> +</li> +<li> +<p><code>jwt_header</code>: a dictionary giving properties to include in the JWT +header. Must include the key <code>alg</code>, giving the algorithm used to +sign the JWT, such as "ES256", using the JWA identifiers in +RFC7518.</p> +</li> +<li> +<p><code>jwt_payload</code>: an optional dictionary giving properties to include in +the JWT payload. Normally this should include an <code>iss</code> key.</p> +</li> +</ul> +</li> +<li> +<p><code>client_auth_method</code>: auth method to use when exchanging the token. Valid +values are <code>client_secret_basic</code> (default), <code>client_secret_post</code> and +<code>none</code>.</p> +</li> +<li> +<p><code>scopes</code>: list of scopes to request. This should normally include the "openid" +scope. Defaults to ["openid"].</p> +</li> +<li> +<p><code>authorization_endpoint</code>: the oauth2 authorization endpoint. Required if +provider discovery is disabled.</p> +</li> +<li> +<p><code>token_endpoint</code>: the oauth2 token endpoint. Required if provider discovery is +disabled.</p> +</li> +<li> +<p><code>userinfo_endpoint</code>: the OIDC userinfo endpoint. Required if discovery is +disabled and the 'openid' scope is not requested.</p> +</li> +<li> +<p><code>jwks_uri</code>: URI where to fetch the JWKS. Required if discovery is disabled and +the 'openid' scope is used.</p> +</li> +<li> +<p><code>skip_verification</code>: set to 'true' to skip metadata verification. Use this if +you are connecting to a provider that is not OpenID Connect compliant. +Defaults to false. Avoid this in production.</p> +</li> +<li> +<p><code>user_profile_method</code>: Whether to fetch the user profile from the userinfo +endpoint, or to rely on the data returned in the id_token from the <code>token_endpoint</code>. +Valid values are: <code>auto</code> or <code>userinfo_endpoint</code>. +Defaults to <code>auto</code>, which uses the userinfo endpoint if <code>openid</code> is +not included in <code>scopes</code>. Set to <code>userinfo_endpoint</code> to always use the +userinfo endpoint.</p> +</li> +<li> +<p><code>allow_existing_users</code>: set to true to allow a user logging in via OIDC to +match a pre-existing account instead of failing. This could be used if +switching from password logins to OIDC. Defaults to false.</p> +</li> +<li> +<p><code>user_mapping_provider</code>: Configuration for how attributes returned from a OIDC +provider are mapped onto a matrix user. This setting has the following +sub-properties:</p> +<ul> +<li> +<p><code>module</code>: The class name of a custom mapping module. Default is +<code>synapse.handlers.oidc.JinjaOidcMappingProvider</code>. +See <a href="../../sso_mapping_providers.html#openid-mapping-providers">OpenID Mapping Providers</a> +for information on implementing a custom mapping provider.</p> +</li> +<li> +<p><code>config</code>: Configuration for the mapping provider module. This section will +be passed as a Python dictionary to the user mapping provider +module's <code>parse_config</code> method.</p> +<p>For the default provider, the following settings are available:</p> +<ul> +<li> +<p><code>subject_claim</code>: name of the claim containing a unique identifier +for the user. Defaults to 'sub', which OpenID Connect +compliant providers should provide.</p> +</li> +<li> +<p><code>picture_claim</code>: name of the claim containing an url for the user's profile picture. +Defaults to 'picture', which OpenID Connect compliant providers should provide +and has to refer to a direct image file such as PNG, JPEG, or GIF image file.</p> +<p>Currently only supported in monolithic (single-process) server configurations +where the media repository runs within the Synapse process.</p> +</li> +<li> +<p><code>localpart_template</code>: Jinja2 template for the localpart of the MXID. +If this is not set, the user will be prompted to choose their +own username (see the documentation for the <code>sso_auth_account_details.html</code> +template). This template can use the <code>localpart_from_email</code> filter.</p> +</li> +<li> +<p><code>confirm_localpart</code>: Whether to prompt the user to validate (or +change) the generated localpart (see the documentation for the +'sso_auth_account_details.html' template), instead of +registering the account right away.</p> +</li> +<li> +<p><code>display_name_template</code>: Jinja2 template for the display name to set +on first login. If unset, no displayname will be set.</p> +</li> +<li> +<p><code>email_template</code>: Jinja2 template for the email address of the user. +If unset, no email address will be added to the account.</p> +</li> +<li> +<p><code>extra_attributes</code>: a map of Jinja2 templates for extra attributes +to send back to the client during login. Note that these are non-standard and clients will ignore them +without modifications.</p> +</li> +</ul> +</li> +</ul> +<p>When rendering, the Jinja2 templates are given a 'user' variable, +which is set to the claims returned by the UserInfo Endpoint and/or +in the ID Token.</p> +</li> +<li> +<p><code>backchannel_logout_enabled</code>: set to <code>true</code> to process OIDC Back-Channel Logout notifications. +Those notifications are expected to be received on <code>/_synapse/client/oidc/backchannel_logout</code>. +Defaults to <code>false</code>.</p> +</li> +<li> +<p><code>backchannel_logout_ignore_sub</code>: by default, the OIDC Back-Channel Logout feature checks that the +<code>sub</code> claim matches the subject claim received during login. This check can be disabled by setting +this to <code>true</code>. Defaults to <code>false</code>.</p> +<p>You might want to disable this if the <code>subject_claim</code> returned by the mapping provider is not <code>sub</code>.</p> +</li> +</ul> +<p>It is possible to configure Synapse to only allow logins if certain attributes +match particular values in the OIDC userinfo. The requirements can be listed under +<code>attribute_requirements</code> as shown here:</p> +<pre><code class="language-yaml">attribute_requirements: + - attribute: family_name + value: "Stephensson" + - attribute: groups + value: "admin" +</code></pre> +<p>All of the listed attributes must match for the login to be permitted. Additional attributes can be added to +userinfo by expanding the <code>scopes</code> section of the OIDC config to retrieve +additional information from the OIDC provider.</p> +<p>If the OIDC claim is a list, then the attribute must match any value in the list. +Otherwise, it must exactly match the value of the claim. Using the example +above, the <code>family_name</code> claim MUST be "Stephensson", but the <code>groups</code> +claim MUST contain "admin".</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">oidc_providers: + # Generic example + # + - idp_id: my_idp + idp_name: "My OpenID provider" + idp_icon: "mxc://example.com/mediaid" + discover: false + issuer: "https://accounts.example.com/" + client_id: "provided-by-your-issuer" + client_secret: "provided-by-your-issuer" + client_auth_method: client_secret_post + scopes: ["openid", "profile"] + authorization_endpoint: "https://accounts.example.com/oauth2/auth" + token_endpoint: "https://accounts.example.com/oauth2/token" + userinfo_endpoint: "https://accounts.example.com/userinfo" + jwks_uri: "https://accounts.example.com/.well-known/jwks.json" + skip_verification: true + user_mapping_provider: + config: + subject_claim: "id" + localpart_template: "{{ user.login }}" + display_name_template: "{{ user.name }}" + email_template: "{{ user.email }}" + attribute_requirements: + - attribute: userGroup + value: "synapseUsers" +</code></pre> +<hr /> +<h3 id="cas_config"><a class="header" href="#cas_config"><code>cas_config</code></a></h3> +<p>Enable Central Authentication Service (CAS) for registration and login. +Has the following sub-options:</p> +<ul> +<li><code>enabled</code>: Set this to true to enable authorization against a CAS server. +Defaults to false.</li> +<li><code>server_url</code>: The URL of the CAS authorization endpoint.</li> +<li><code>displayname_attribute</code>: The attribute of the CAS response to use as the display name. +If no name is given here, no displayname will be set.</li> +<li><code>required_attributes</code>: It is possible to configure Synapse to only allow logins if CAS attributes +match particular values. All of the keys given below must exist +and the values must match the given value. Alternately if the given value +is <code>None</code> then any value is allowed (the attribute just must exist). +All of the listed attributes must match for the login to be permitted.</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">cas_config: + enabled: true + server_url: "https://cas-server.com" + displayname_attribute: name + required_attributes: + userGroup: "staff" + department: None +</code></pre> +<hr /> +<h3 id="sso"><a class="header" href="#sso"><code>sso</code></a></h3> +<p>Additional settings to use with single-sign on systems such as OpenID Connect, +SAML2 and CAS.</p> +<p>Server admins can configure custom templates for pages related to SSO. See +<a href="../../templates.html">here</a> for more information.</p> +<p>Options include:</p> +<ul> +<li><code>client_whitelist</code>: A list of client URLs which are whitelisted so that the user does not +have to confirm giving access to their account to the URL. Any client +whose URL starts with an entry in the following list will not be subject +to an additional confirmation step after the SSO login is completed. +WARNING: An entry such as "https://my.client" is insecure, because it +will also match "https://my.client.evil.site", exposing your users to +phishing attacks from evil.site. To avoid this, include a slash after the +hostname: "https://my.client/". +The login fallback page (used by clients that don't natively support the +required login flows) is whitelisted in addition to any URLs in this list. +By default, this list contains only the login fallback page.</li> +<li><code>update_profile_information</code>: Use this setting to keep a user's profile fields in sync with information from +the identity provider. Currently only syncing the displayname is supported. Fields +are checked on every SSO login, and are updated if necessary. +Note that enabling this option will override user profile information, +regardless of whether users have opted-out of syncing that +information when first signing in. Defaults to false.</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">sso: + client_whitelist: + - https://riot.im/develop + - https://my.custom.client/ + update_profile_information: true +</code></pre> +<hr /> +<h3 id="jwt_config"><a class="header" href="#jwt_config"><code>jwt_config</code></a></h3> +<p>JSON web token integration. The following settings can be used to make +Synapse JSON web tokens for authentication, instead of its internal +password database.</p> +<p>Each JSON Web Token needs to contain a "sub" (subject) claim, which is +used as the localpart of the mxid.</p> +<p>Additionally, the expiration time ("exp"), not before time ("nbf"), +and issued at ("iat") claims are validated if present.</p> +<p>Note that this is a non-standard login type and client support is +expected to be non-existent.</p> +<p>See <a href="../../jwt.html">here</a> for more.</p> +<p>Additional sub-options for this setting include:</p> +<ul> +<li><code>enabled</code>: Set to true to enable authorization using JSON web +tokens. Defaults to false.</li> +<li><code>secret</code>: This is either the private shared secret or the public key used to +decode the contents of the JSON web token. Required if <code>enabled</code> is set to true.</li> +<li><code>algorithm</code>: The algorithm used to sign (or HMAC) the JSON web token. +Supported algorithms are listed +<a href="https://docs.authlib.org/en/latest/specs/rfc7518.html">here (section JWS)</a>. +Required if <code>enabled</code> is set to true.</li> +<li><code>subject_claim</code>: Name of the claim containing a unique identifier for the user. +Optional, defaults to <code>sub</code>.</li> +<li><code>issuer</code>: The issuer to validate the "iss" claim against. Optional. If provided the +"iss" claim will be required and validated for all JSON web tokens.</li> +<li><code>audiences</code>: A list of audiences to validate the "aud" claim against. Optional. +If provided the "aud" claim will be required and validated for all JSON web tokens. +Note that if the "aud" claim is included in a JSON web token then +validation will fail without configuring audiences.</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">jwt_config: + enabled: true + secret: "provided-by-your-issuer" + algorithm: "provided-by-your-issuer" + subject_claim: "name_of_claim" + issuer: "provided-by-your-issuer" + audiences: + - "provided-by-your-issuer" +</code></pre> +<hr /> +<h3 id="password_config"><a class="header" href="#password_config"><code>password_config</code></a></h3> +<p>Use this setting to enable password-based logins.</p> +<p>This setting has the following sub-options:</p> +<ul> +<li><code>enabled</code>: Defaults to true. +Set to false to disable password authentication. +Set to <code>only_for_reauth</code> to allow users with existing passwords to use them +to log in and reauthenticate, whilst preventing new users from setting passwords.</li> +<li><code>localdb_enabled</code>: Set to false to disable authentication against the local password +database. This is ignored if <code>enabled</code> is false, and is only useful +if you have other <code>password_providers</code>. Defaults to true.</li> +<li><code>pepper</code>: Set the value here to a secret random string for extra security. +DO NOT CHANGE THIS AFTER INITIAL SETUP!</li> +<li><code>policy</code>: Define and enforce a password policy, such as minimum lengths for passwords, etc. +Each parameter is optional. This is an implementation of MSC2000. Parameters are as follows: +<ul> +<li><code>enabled</code>: Defaults to false. Set to true to enable.</li> +<li><code>minimum_length</code>: Minimum accepted length for a password. Defaults to 0.</li> +<li><code>require_digit</code>: Whether a password must contain at least one digit. +Defaults to false.</li> +<li><code>require_symbol</code>: Whether a password must contain at least one symbol. +A symbol is any character that's not a number or a letter. Defaults to false.</li> +<li><code>require_lowercase</code>: Whether a password must contain at least one lowercase letter. +Defaults to false.</li> +<li><code>require_uppercase</code>: Whether a password must contain at least one uppercase letter. +Defaults to false.</li> +</ul> +</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">password_config: + enabled: false + localdb_enabled: false + pepper: "EVEN_MORE_SECRET" + + policy: + enabled: true + minimum_length: 15 + require_digit: true + require_symbol: true + require_lowercase: true + require_uppercase: true +</code></pre> +<hr /> +<h3 id="ui_auth"><a class="header" href="#ui_auth"><code>ui_auth</code></a></h3> +<p>The amount of time to allow a user-interactive authentication session to be active.</p> +<p>This defaults to 0, meaning the user is queried for their credentials +before every action, but this can be overridden to allow a single +validation to be re-used. This weakens the protections afforded by +the user-interactive authentication process, by allowing for multiple +(and potentially different) operations to use the same validation session.</p> +<p>This is ignored for potentially "dangerous" operations (including +deactivating an account, modifying an account password, and +adding a 3PID).</p> +<p>Use the <code>session_timeout</code> sub-option here to change the time allowed for credential validation.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">ui_auth: + session_timeout: "15s" +</code></pre> +<hr /> +<h3 id="email"><a class="header" href="#email"><code>email</code></a></h3> +<p>Configuration for sending emails from Synapse.</p> +<p>Server admins can configure custom templates for email content. See +<a href="../../templates.html">here</a> for more information.</p> +<p>This setting has the following sub-options:</p> +<ul> +<li> +<p><code>smtp_host</code>: The hostname of the outgoing SMTP server to use. Defaults to 'localhost'.</p> +</li> +<li> +<p><code>smtp_port</code>: The port on the mail server for outgoing SMTP. Defaults to 465 if <code>force_tls</code> is true, else 25.</p> +<p><em>Changed in Synapse 1.64.0:</em> the default port is now aware of <code>force_tls</code>.</p> +</li> +<li> +<p><code>smtp_user</code> and <code>smtp_pass</code>: Username/password for authentication to the SMTP server. By default, no +authentication is attempted.</p> +</li> +<li> +<p><code>force_tls</code>: By default, Synapse connects over plain text and then optionally upgrades +to TLS via STARTTLS. If this option is set to true, TLS is used from the start (Implicit TLS), +and the option <code>require_transport_security</code> is ignored. +It is recommended to enable this if supported by your mail server.</p> +<p><em>New in Synapse 1.64.0.</em></p> +</li> +<li> +<p><code>require_transport_security</code>: Set to true to require TLS transport security for SMTP. +By default, Synapse will connect over plain text, and will then switch to +TLS via STARTTLS <em>if the SMTP server supports it</em>. If this option is set, +Synapse will refuse to connect unless the server supports STARTTLS.</p> +</li> +<li> +<p><code>enable_tls</code>: By default, if the server supports TLS, it will be used, and the server +must present a certificate that is valid for 'smtp_host'. If this option +is set to false, TLS will not be used.</p> +</li> +<li> +<p><code>notif_from</code>: defines the "From" address to use when sending emails. +It must be set if email sending is enabled. The placeholder '%(app)s' will be replaced by the application name, +which is normally set in <code>app_name</code>, but may be overridden by the +Matrix client application. Note that the placeholder must be written '%(app)s', including the +trailing 's'.</p> +</li> +<li> +<p><code>app_name</code>: <code>app_name</code> defines the default value for '%(app)s' in <code>notif_from</code> and email +subjects. It defaults to 'Matrix'.</p> +</li> +<li> +<p><code>enable_notifs</code>: Set to true to enable sending emails for messages that the user +has missed. Disabled by default.</p> +</li> +<li> +<p><code>notif_for_new_users</code>: Set to false to disable automatic subscription to email +notifications for new users. Enabled by default.</p> +</li> +<li> +<p><code>client_base_url</code>: Custom URL for client links within the email notifications. By default +links will be based on "https://matrix.to". (This setting used to be called <code>riot_base_url</code>; +the old name is still supported for backwards-compatibility but is now deprecated.)</p> +</li> +<li> +<p><code>validation_token_lifetime</code>: Configures the time that a validation email will expire after sending. +Defaults to 1h.</p> +</li> +<li> +<p><code>invite_client_location</code>: The web client location to direct users to during an invite. This is passed +to the identity server as the <code>org.matrix.web_client_location</code> key. Defaults +to unset, giving no guidance to the identity server.</p> +</li> +<li> +<p><code>subjects</code>: Subjects to use when sending emails from Synapse. The placeholder '%(app)s' will +be replaced with the value of the <code>app_name</code> setting, or by a value dictated by the Matrix client application. +In addition, each subject can use the following placeholders: '%(person)s', which will be replaced by the displayname +of the user(s) that sent the message(s), e.g. "Alice and Bob", and '%(room)s', which will be replaced by the name of the room the +message(s) have been sent to, e.g. "My super room". In addition, emails related to account administration will +can use the '%(server_name)s' placeholder, which will be replaced by the value of the +<code>server_name</code> setting in your Synapse configuration.</p> +<p>Here is a list of subjects for notification emails that can be set:</p> +<ul> +<li><code>message_from_person_in_room</code>: Subject to use to notify about one message from one or more user(s) in a +room which has a name. Defaults to "[%(app)s] You have a message on %(app)s from %(person)s in the %(room)s room..."</li> +<li><code>message_from_person</code>: Subject to use to notify about one message from one or more user(s) in a +room which doesn't have a name. Defaults to "[%(app)s] You have a message on %(app)s from %(person)s..."</li> +<li><code>messages_from_person</code>: Subject to use to notify about multiple messages from one or more users in +a room which doesn't have a name. Defaults to "[%(app)s] You have messages on %(app)s from %(person)s..."</li> +<li><code>messages_in_room</code>: Subject to use to notify about multiple messages in a room which has a +name. Defaults to "[%(app)s] You have messages on %(app)s in the %(room)s room..."</li> +<li><code>messages_in_room_and_others</code>: Subject to use to notify about multiple messages in multiple rooms. +Defaults to "[%(app)s] You have messages on %(app)s in the %(room)s room and others..."</li> +<li><code>messages_from_person_and_others</code>: Subject to use to notify about multiple messages from multiple persons in +multiple rooms. This is similar to the setting above except it's used when +the room in which the notification was triggered has no name. Defaults to +"[%(app)s] You have messages on %(app)s from %(person)s and others..."</li> +<li><code>invite_from_person_to_room</code>: Subject to use to notify about an invite to a room which has a name. +Defaults to "[%(app)s] %(person)s has invited you to join the %(room)s room on %(app)s..."</li> +<li><code>invite_from_person</code>: Subject to use to notify about an invite to a room which doesn't have a +name. Defaults to "[%(app)s] %(person)s has invited you to chat on %(app)s..."</li> +<li><code>password_reset</code>: Subject to use when sending a password reset email. Defaults to "[%(server_name)s] Password reset"</li> +<li><code>email_validation</code>: Subject to use when sending a verification email to assert an address's +ownership. Defaults to "[%(server_name)s] Validate your email"</li> +</ul> +</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">email: + smtp_host: mail.server + smtp_port: 587 + smtp_user: "exampleusername" + smtp_pass: "examplepassword" + force_tls: true + require_transport_security: true + enable_tls: false + notif_from: "Your Friendly %(app)s homeserver <noreply@example.com>" + app_name: my_branded_matrix_server + enable_notifs: true + notif_for_new_users: false + client_base_url: "http://localhost/riot" + validation_token_lifetime: 15m + invite_client_location: https://app.element.io + + subjects: + message_from_person_in_room: "[%(app)s] You have a message on %(app)s from %(person)s in the %(room)s room..." + message_from_person: "[%(app)s] You have a message on %(app)s from %(person)s..." + messages_from_person: "[%(app)s] You have messages on %(app)s from %(person)s..." + messages_in_room: "[%(app)s] You have messages on %(app)s in the %(room)s room..." + messages_in_room_and_others: "[%(app)s] You have messages on %(app)s in the %(room)s room and others..." + messages_from_person_and_others: "[%(app)s] You have messages on %(app)s from %(person)s and others..." + invite_from_person_to_room: "[%(app)s] %(person)s has invited you to join the %(room)s room on %(app)s..." + invite_from_person: "[%(app)s] %(person)s has invited you to chat on %(app)s..." + password_reset: "[%(server_name)s] Password reset" + email_validation: "[%(server_name)s] Validate your email" +</code></pre> +<hr /> +<h2 id="push"><a class="header" href="#push">Push</a></h2> +<p>Configuration settings related to push notifications</p> +<hr /> +<h3 id="push-1"><a class="header" href="#push-1"><code>push</code></a></h3> +<p>This setting defines options for push notifications.</p> +<p>This option has a number of sub-options. They are as follows:</p> +<ul> +<li><code>enabled</code>: Enables or disables push notification calculation. Note, disabling this will also +stop unread counts being calculated for rooms. This mode of operation is intended +for homeservers which may only have bots or appservice users connected, or are otherwise +not interested in push/unread counters. This is enabled by default.</li> +<li><code>include_content</code>: Clients requesting push notifications can either have the body of +the message sent in the notification poke along with other details +like the sender, or just the event ID and room ID (<code>event_id_only</code>). +If clients choose the to have the body sent, this option controls whether the +notification request includes the content of the event (other details +like the sender are still included). If <code>event_id_only</code> is enabled, it +has no effect. +For modern android devices the notification content will still appear +because it is loaded by the app. iPhone, however will send a +notification saying only that a message arrived and who it came from. +Defaults to true. Set to false to only include the event ID and room ID in push notification payloads.</li> +<li><code>group_unread_count_by_room: false</code>: When a push notification is received, an unread count is also sent. +This number can either be calculated as the number of unread messages for the user, or the number of <em>rooms</em> the +user has unread messages in. Defaults to true, meaning push clients will see the number of +rooms with unread messages in them. Set to false to instead send the number +of unread messages.</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">push: + enabled: true + include_content: false + group_unread_count_by_room: false +</code></pre> +<hr /> +<h2 id="rooms"><a class="header" href="#rooms">Rooms</a></h2> +<p>Config options relating to rooms.</p> +<hr /> +<h3 id="encryption_enabled_by_default_for_room_type"><a class="header" href="#encryption_enabled_by_default_for_room_type"><code>encryption_enabled_by_default_for_room_type</code></a></h3> +<p>Controls whether locally-created rooms should be end-to-end encrypted by +default.</p> +<p>Possible options are "all", "invite", and "off". They are defined as:</p> +<ul> +<li>"all": any locally-created room</li> +<li>"invite": any room created with the <code>private_chat</code> or <code>trusted_private_chat</code> +room creation presets</li> +<li>"off": this option will take no effect</li> +</ul> +<p>The default value is "off".</p> +<p>Note that this option will only affect rooms created after it is set. It +will also not affect rooms created by other servers.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">encryption_enabled_by_default_for_room_type: invite +</code></pre> +<hr /> +<h3 id="user_directory"><a class="header" href="#user_directory"><code>user_directory</code></a></h3> +<p>This setting defines options related to the user directory.</p> +<p>This option has the following sub-options:</p> +<ul> +<li> +<p><code>enabled</code>: Defines whether users can search the user directory. If false then +empty responses are returned to all queries. Defaults to true.</p> +</li> +<li> +<p><code>search_all_users</code>: Defines whether to search all users visible to your HS when searching +the user directory. If false, search results will only contain users +visible in public rooms and users sharing a room with the requester. +Defaults to false.</p> +<p>NB. If you set this to true, and the last time the user_directory search +indexes were (re)built was before Synapse 1.44, you'll have to +rebuild the indexes in order to search through all known users.</p> +<p>These indexes are built the first time Synapse starts; admins can +manually trigger a rebuild via the API following the instructions +<a href="../administration/admin_api/background_updates.html#run">for running background updates</a>, +set to true to return search results containing all known users, even if that +user does not share a room with the requester.</p> +</li> +<li> +<p><code>prefer_local_users</code>: Defines whether to prefer local users in search query results. +If set to true, local users are more likely to appear above remote users when searching the +user directory. Defaults to false.</p> +</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">user_directory: + enabled: false + search_all_users: true + prefer_local_users: true +</code></pre> +<hr /> +<h3 id="user_consent"><a class="header" href="#user_consent"><code>user_consent</code></a></h3> +<p>For detailed instructions on user consent configuration, see <a href="../../consent_tracking.html">here</a>.</p> +<p>Parts of this section are required if enabling the <code>consent</code> resource under +<a href="#listeners"><code>listeners</code></a>, in particular <code>template_dir</code> and <code>version</code>.</p> +<ul> +<li> +<p><code>template_dir</code>: gives the location of the templates for the HTML forms. +This directory should contain one subdirectory per language (eg, <code>en</code>, <code>fr</code>), +and each language directory should contain the policy document (named as +<version>.html) and a success page (success.html).</p> +</li> +<li> +<p><code>version</code>: specifies the 'current' version of the policy document. It defines +the version to be served by the consent resource if there is no 'v' +parameter.</p> +</li> +<li> +<p><code>server_notice_content</code>: if enabled, will send a user a "Server Notice" +asking them to consent to the privacy policy. The <a href="#server_notices"><code>server_notices</code> section</a> +must also be configured for this to work. Notices will <em>not</em> be sent to +guest users unless <code>send_server_notice_to_guests</code> is set to true.</p> +</li> +<li> +<p><code>block_events_error</code>, if set, will block any attempts to send events +until the user consents to the privacy policy. The value of the setting is +used as the text of the error.</p> +</li> +<li> +<p><code>require_at_registration</code>, if enabled, will add a step to the registration +process, similar to how captcha works. Users will be required to accept the +policy before their account is created.</p> +</li> +<li> +<p><code>policy_name</code> is the display name of the policy users will see when registering +for an account. Has no effect unless <code>require_at_registration</code> is enabled. +Defaults to "Privacy Policy".</p> +</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">user_consent: + template_dir: res/templates/privacy + version: 1.0 + server_notice_content: + msgtype: m.text + body: >- + To continue using this homeserver you must review and agree to the + terms and conditions at %(consent_uri)s + send_server_notice_to_guests: true + block_events_error: >- + To continue using this homeserver you must review and agree to the + terms and conditions at %(consent_uri)s + require_at_registration: false + policy_name: Privacy Policy +</code></pre> +<hr /> +<h3 id="stats"><a class="header" href="#stats"><code>stats</code></a></h3> +<p>Settings for local room and user statistics collection. See <a href="../../room_and_user_statistics.html">here</a> +for more.</p> +<ul> +<li><code>enabled</code>: Set to false to disable room and user statistics. Note that doing +so may cause certain features (such as the room directory) not to work +correctly. Defaults to true.</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">stats: + enabled: false +</code></pre> +<hr /> +<h3 id="server_notices"><a class="header" href="#server_notices"><code>server_notices</code></a></h3> +<p>Use this setting to enable a room which can be used to send notices +from the server to users. It is a special room which users cannot leave; notices +in the room come from a special "notices" user id.</p> +<p>If you use this setting, you <em>must</em> define the <code>system_mxid_localpart</code> +sub-setting, which defines the id of the user which will be used to send the +notices.</p> +<p>Sub-options for this setting include:</p> +<ul> +<li><code>system_mxid_display_name</code>: set the display name of the "notices" user</li> +<li><code>system_mxid_avatar_url</code>: set the avatar for the "notices" user</li> +<li><code>room_name</code>: set the room name of the server notices room</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">server_notices: + system_mxid_localpart: notices + system_mxid_display_name: "Server Notices" + system_mxid_avatar_url: "mxc://server.com/oumMVlgDnLYFaPVkExemNVVZ" + room_name: "Server Notices" +</code></pre> +<hr /> +<h3 id="enable_room_list_search"><a class="header" href="#enable_room_list_search"><code>enable_room_list_search</code></a></h3> +<p>Set to false to disable searching the public room list. When disabled +blocks searching local and remote room lists for local and remote +users by always returning an empty list for all queries. Defaults to true.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">enable_room_list_search: false +</code></pre> +<hr /> +<h3 id="alias_creation_rules"><a class="header" href="#alias_creation_rules"><code>alias_creation_rules</code></a></h3> +<p>The <code>alias_creation_rules</code> option controls who is allowed to create aliases +on this server.</p> +<p>The format of this option is a list of rules that contain globs that +match against user_id, room_id and the new alias (fully qualified with +server name). The action in the first rule that matches is taken, +which can currently either be "allow" or "deny".</p> +<p>Missing user_id/room_id/alias fields default to "*".</p> +<p>If no rules match the request is denied. An empty list means no one +can create aliases.</p> +<p>Options for the rules include:</p> +<ul> +<li><code>user_id</code>: Matches against the creator of the alias. Defaults to "*".</li> +<li><code>alias</code>: Matches against the alias being created. Defaults to "*".</li> +<li><code>room_id</code>: Matches against the room ID the alias is being pointed at. Defaults to "*"</li> +<li><code>action</code>: Whether to "allow" or "deny" the request if the rule matches. Defaults to allow.</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">alias_creation_rules: + - user_id: "bad_user" + alias: "spammy_alias" + room_id: "*" + action: deny +</code></pre> +<hr /> +<h3 id="room_list_publication_rules"><a class="header" href="#room_list_publication_rules"><code>room_list_publication_rules</code></a></h3> +<p>The <code>room_list_publication_rules</code> option controls who can publish and +which rooms can be published in the public room list.</p> +<p>The format of this option is the same as that for +<code>alias_creation_rules</code>.</p> +<p>If the room has one or more aliases associated with it, only one of +the aliases needs to match the alias rule. If there are no aliases +then only rules with <code>alias: *</code> match.</p> +<p>If no rules match the request is denied. An empty list means no one +can publish rooms.</p> +<p>Options for the rules include:</p> +<ul> +<li><code>user_id</code>: Matches against the creator of the alias. Defaults to "*".</li> +<li><code>alias</code>: Matches against any current local or canonical aliases associated with the room. Defaults to "*".</li> +<li><code>room_id</code>: Matches against the room ID being published. Defaults to "*".</li> +<li><code>action</code>: Whether to "allow" or "deny" the request if the rule matches. Defaults to allow.</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">room_list_publication_rules: + - user_id: "*" + alias: "*" + room_id: "*" + action: allow +</code></pre> +<hr /> +<h3 id="default_power_level_content_override"><a class="header" href="#default_power_level_content_override"><code>default_power_level_content_override</code></a></h3> +<p>The <code>default_power_level_content_override</code> option controls the default power +levels for rooms.</p> +<p>Useful if you know that your users need special permissions in rooms +that they create (e.g. to send particular types of state events without +needing an elevated power level). This takes the same shape as the +<code>power_level_content_override</code> parameter in the /createRoom API, but +is applied before that parameter.</p> +<p>Note that each key provided inside a preset (for example <code>events</code> in the example +below) will overwrite all existing defaults inside that key. So in the example +below, newly-created private_chat rooms will have no rules for any event types +except <code>com.example.foo</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">default_power_level_content_override: + private_chat: { "events": { "com.example.foo" : 0 } } + trusted_private_chat: null + public_chat: null +</code></pre> +<hr /> +<h2 id="opentracing"><a class="header" href="#opentracing">Opentracing</a></h2> +<p>Configuration options related to Opentracing support.</p> +<hr /> +<h3 id="opentracing-1"><a class="header" href="#opentracing-1"><code>opentracing</code></a></h3> +<p>These settings enable and configure opentracing, which implements distributed tracing. +This allows you to observe the causal chains of events across servers +including requests, key lookups etc., across any server running +synapse or any other services which support opentracing +(specifically those implemented with Jaeger).</p> +<p>Sub-options include:</p> +<ul> +<li><code>enabled</code>: whether tracing is enabled. Set to true to enable. Disabled by default.</li> +<li><code>homeserver_whitelist</code>: The list of homeservers we wish to send and receive span contexts and span baggage. +See <a href="../../opentracing.html">here</a> for more. +This is a list of regexes which are matched against the <code>server_name</code> of the homeserver. +By default, it is empty, so no servers are matched.</li> +<li><code>force_tracing_for_users</code>: # A list of the matrix IDs of users whose requests will always be traced, +even if the tracing system would otherwise drop the traces due to probabilistic sampling. +By default, the list is empty.</li> +<li><code>jaeger_config</code>: Jaeger can be configured to sample traces at different rates. +All configuration options provided by Jaeger can be set here. Jaeger's configuration is +mostly related to trace sampling which is documented <a href="https://www.jaegertracing.io/docs/latest/sampling/">here</a>.</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">opentracing: + enabled: true + homeserver_whitelist: + - ".*" + force_tracing_for_users: + - "@user1:server_name" + - "@user2:server_name" + + jaeger_config: + sampler: + type: const + param: 1 + logging: + false +</code></pre> +<hr /> +<h2 id="coordinating-workers"><a class="header" href="#coordinating-workers">Coordinating workers</a></h2> +<p>Configuration options related to workers which belong in the main config file +(usually called <code>homeserver.yaml</code>). +A Synapse deployment can scale horizontally by running multiple Synapse processes +called <em>workers</em>. Incoming requests are distributed between workers to handle higher +loads. Some workers are privileged and can accept requests from other workers.</p> +<p>As a result, the worker configuration is divided into two parts.</p> +<ol> +<li>The first part (in this section of the manual) defines which shardable tasks +are delegated to privileged workers. This allows unprivileged workers to make +requests to a privileged worker to act on their behalf.</li> +<li><a href="#individual-worker-configuration">The second part</a> +controls the behaviour of individual workers in isolation.</li> +</ol> +<p>For guidance on setting up workers, see the <a href="../../workers.html">worker documentation</a>.</p> +<hr /> +<h3 id="worker_replication_secret"><a class="header" href="#worker_replication_secret"><code>worker_replication_secret</code></a></h3> +<p>A shared secret used by the replication APIs on the main process to authenticate +HTTP requests from workers.</p> +<p>The default, this value is omitted (equivalently <code>null</code>), which means that +traffic between the workers and the main process is not authenticated.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">worker_replication_secret: "secret_secret" +</code></pre> +<hr /> +<h3 id="start_pushers"><a class="header" href="#start_pushers"><code>start_pushers</code></a></h3> +<p>Unnecessary to set if using <a href="#pusher_instances"><code>pusher_instances</code></a> with <a href="../../workers.html#synapseappgeneric_worker"><code>generic_workers</code></a>.</p> +<p>Controls sending of push notifications on the main process. Set to <code>false</code> +if using a <a href="../../workers.html#synapseapppusher">pusher worker</a>. Defaults to <code>true</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">start_pushers: false +</code></pre> +<hr /> +<h3 id="pusher_instances"><a class="header" href="#pusher_instances"><code>pusher_instances</code></a></h3> +<p>It is possible to scale the processes that handle sending push notifications to <a href="https://github.com/matrix-org/sygnal">sygnal</a> +and email by running a <a href="../../workers.html#synapseappgeneric_worker"><code>generic_worker</code></a> and adding it's <a href="#worker_name"><code>worker_name</code></a> to +a <code>pusher_instances</code> map. Doing so will remove handling of this function from the main +process. Multiple workers can be added to this map, in which case the work is balanced +across them. Ensure the main process and all pusher workers are restarted after changing +this option.</p> +<p>Example configuration for a single worker:</p> +<pre><code class="language-yaml">pusher_instances: + - pusher_worker1 +</code></pre> +<p>And for multiple workers:</p> +<pre><code class="language-yaml">pusher_instances: + - pusher_worker1 + - pusher_worker2 +</code></pre> +<hr /> +<h3 id="send_federation"><a class="header" href="#send_federation"><code>send_federation</code></a></h3> +<p>Unnecessary to set if using <a href="#federation_sender_instances"><code>federation_sender_instances</code></a> with <a href="../../workers.html#synapseappgeneric_worker"><code>generic_workers</code></a>.</p> +<p>Controls sending of outbound federation transactions on the main process. +Set to <code>false</code> if using a <a href="../../workers.html#synapseappfederation_sender">federation sender worker</a>. +Defaults to <code>true</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">send_federation: false +</code></pre> +<hr /> +<h3 id="federation_sender_instances"><a class="header" href="#federation_sender_instances"><code>federation_sender_instances</code></a></h3> +<p>It is possible to scale the processes that handle sending outbound federation requests +by running a <a href="../../workers.html#synapseappgeneric_worker"><code>generic_worker</code></a> and adding it's <a href="#worker_name"><code>worker_name</code></a> to +a <code>federation_sender_instances</code> map. Doing so will remove handling of this function from +the main process. Multiple workers can be added to this map, in which case the work is +balanced across them.</p> +<p>This configuration setting must be shared between all workers handling federation +sending, and if changed all federation sender workers must be stopped at the same time +and then started, to ensure that all instances are running with the same config (otherwise +events may be dropped).</p> +<p>Example configuration for a single worker:</p> +<pre><code class="language-yaml">federation_sender_instances: + - federation_sender1 +</code></pre> +<p>And for multiple workers:</p> +<pre><code class="language-yaml">federation_sender_instances: + - federation_sender1 + - federation_sender2 +</code></pre> +<hr /> +<h3 id="instance_map"><a class="header" href="#instance_map"><code>instance_map</code></a></h3> +<p>When using workers this should be a map from <a href="#worker_name"><code>worker_name</code></a> to the +HTTP replication listener of the worker, if configured. +Each worker declared under <a href="../../workers.html#stream-writers"><code>stream_writers</code></a> needs +a HTTP replication listener, and that listener should be included in the <code>instance_map</code>. +(The main process also needs an HTTP replication listener, but it should not be +listed in the <code>instance_map</code>.)</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">instance_map: + worker1: + host: localhost + port: 8034 +</code></pre> +<hr /> +<h3 id="stream_writers"><a class="header" href="#stream_writers"><code>stream_writers</code></a></h3> +<p>Experimental: When using workers you can define which workers should +handle writing to streams such as event persistence and typing notifications. +Any worker specified here must also be in the <a href="#instance_map"><code>instance_map</code></a>.</p> +<p>See the list of available streams in the +<a href="../../workers.html#stream-writers">worker documentation</a>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">stream_writers: + events: worker1 + typing: worker1 +</code></pre> +<hr /> +<h3 id="run_background_tasks_on"><a class="header" href="#run_background_tasks_on"><code>run_background_tasks_on</code></a></h3> +<p>The <a href="../../workers.html#background-tasks">worker</a> that is used to run +background tasks (e.g. cleaning up expired data). If not provided this +defaults to the main process.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">run_background_tasks_on: worker1 +</code></pre> +<hr /> +<h3 id="redis"><a class="header" href="#redis"><code>redis</code></a></h3> +<p>Configuration for Redis when using workers. This <em>must</em> be enabled when using workers. +This setting has the following sub-options:</p> +<ul> +<li><code>enabled</code>: whether to use Redis support. Defaults to false.</li> +<li><code>host</code> and <code>port</code>: Optional host and port to use to connect to redis. Defaults to +localhost and 6379</li> +<li><code>password</code>: Optional password if configured on the Redis instance.</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">redis: + enabled: true + host: localhost + port: 6379 + password: <secret_password> +</code></pre> +<hr /> +<h2 id="individual-worker-configuration"><a class="header" href="#individual-worker-configuration">Individual worker configuration</a></h2> +<p>These options configure an individual worker, in its worker configuration file. +They should be not be provided when configuring the main process.</p> +<p>Note also the configuration above for +<a href="#coordinating-workers">coordinating a cluster of workers</a>.</p> +<p>For guidance on setting up workers, see the <a href="../../workers.html">worker documentation</a>.</p> +<hr /> +<h3 id="worker_app"><a class="header" href="#worker_app"><code>worker_app</code></a></h3> +<p>The type of worker. The currently available worker applications are listed +in <a href="../../workers.html#available-worker-applications">worker documentation</a>.</p> +<p>The most common worker is the +<a href="../../workers.html#synapseappgeneric_worker"><code>synapse.app.generic_worker</code></a>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">worker_app: synapse.app.generic_worker +</code></pre> +<hr /> +<h3 id="worker_name"><a class="header" href="#worker_name"><code>worker_name</code></a></h3> +<p>A unique name for the worker. The worker needs a name to be addressed in +further parameters and identification in log files. We strongly recommend +giving each worker a unique <code>worker_name</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">worker_name: generic_worker1 +</code></pre> +<hr /> +<h3 id="worker_replication_host"><a class="header" href="#worker_replication_host"><code>worker_replication_host</code></a></h3> +<p>The HTTP replication endpoint that it should talk to on the main Synapse process. +The main Synapse process defines this with a <code>replication</code> resource in +<a href="#listeners"><code>listeners</code> option</a>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">worker_replication_host: 127.0.0.1 +</code></pre> +<hr /> +<h3 id="worker_replication_http_port"><a class="header" href="#worker_replication_http_port"><code>worker_replication_http_port</code></a></h3> +<p>The HTTP replication port that it should talk to on the main Synapse process. +The main Synapse process defines this with a <code>replication</code> resource in +<a href="#listeners"><code>listeners</code> option</a>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">worker_replication_http_port: 9093 +</code></pre> +<hr /> +<h3 id="worker_replication_http_tls"><a class="header" href="#worker_replication_http_tls"><code>worker_replication_http_tls</code></a></h3> +<p>Whether TLS should be used for talking to the HTTP replication port on the main +Synapse process. +The main Synapse process defines this with the <code>tls</code> option on its <a href="#listeners">listener</a> that +has the <code>replication</code> resource enabled.</p> +<p><strong>Please note:</strong> by default, it is not safe to expose replication ports to the +public Internet, even with TLS enabled. +See <a href="#worker_replication_secret"><code>worker_replication_secret</code></a>.</p> +<p>Defaults to <code>false</code>.</p> +<p><em>Added in Synapse 1.72.0.</em></p> +<p>Example configuration:</p> +<pre><code class="language-yaml">worker_replication_http_tls: true +</code></pre> +<hr /> +<h3 id="worker_listeners"><a class="header" href="#worker_listeners"><code>worker_listeners</code></a></h3> +<p>A worker can handle HTTP requests. To do so, a <code>worker_listeners</code> option +must be declared, in the same way as the <a href="#listeners"><code>listeners</code> option</a> +in the shared config.</p> +<p>Workers declared in <a href="#stream_writers"><code>stream_writers</code></a> will need to include a +<code>replication</code> listener here, in order to accept internal HTTP requests from +other workers.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">worker_listeners: + - type: http + port: 8083 + resources: + - names: [client, federation] +</code></pre> +<hr /> +<h3 id="worker_daemonize"><a class="header" href="#worker_daemonize"><code>worker_daemonize</code></a></h3> +<p>Specifies whether the worker should be started as a daemon process. +If Synapse is being managed by <a href="../../systemd-with-workers/README.html">systemd</a>, this option +must be omitted or set to <code>false</code>.</p> +<p>Defaults to <code>false</code>.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">worker_daemonize: true +</code></pre> +<hr /> +<h3 id="worker_pid_file"><a class="header" href="#worker_pid_file"><code>worker_pid_file</code></a></h3> +<p>When running a worker as a daemon, we need a place to store the +<a href="https://en.wikipedia.org/wiki/Process_identifier">PID</a> of the worker. +This option defines the location of that "pid file".</p> +<p>This option is required if <code>worker_daemonize</code> is <code>true</code> and ignored +otherwise. It has no default.</p> +<p>See also the <a href="#pid_file"><code>pid_file</code> option</a> option for the main Synapse process.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">worker_pid_file: DATADIR/generic_worker1.pid +</code></pre> +<hr /> +<h3 id="worker_log_config"><a class="header" href="#worker_log_config"><code>worker_log_config</code></a></h3> +<p>This option specifies a yaml python logging config file as described +<a href="https://docs.python.org/3/library/logging.config.html#configuration-dictionary-schema">here</a>. +See also the <a href="#log_config"><code>log_config</code> option</a> option for the main Synapse process.</p> +<p>Example configuration:</p> +<pre><code class="language-yaml">worker_log_config: /etc/matrix-synapse/generic-worker-log.yaml +</code></pre> +<hr /> +<h2 id="background-updates"><a class="header" href="#background-updates">Background Updates</a></h2> +<p>Configuration settings related to background updates.</p> +<hr /> +<h3 id="background_updates"><a class="header" href="#background_updates"><code>background_updates</code></a></h3> +<p>Background updates are database updates that are run in the background in batches. +The duration, minimum batch size, default batch size, whether to sleep between batches and if so, how long to +sleep can all be configured. This is helpful to speed up or slow down the updates. +This setting has the following sub-options:</p> +<ul> +<li><code>background_update_duration_ms</code>: How long in milliseconds to run a batch of background updates for. Defaults to 100. +Set a different time to change the default.</li> +<li><code>sleep_enabled</code>: Whether to sleep between updates. Defaults to true. Set to false to change the default.</li> +<li><code>sleep_duration_ms</code>: If sleeping between updates, how long in milliseconds to sleep for. Defaults to 1000. +Set a duration to change the default.</li> +<li><code>min_batch_size</code>: Minimum size a batch of background updates can be. Must be greater than 0. Defaults to 1. +Set a size to change the default.</li> +<li><code>default_batch_size</code>: The batch size to use for the first iteration of a new background update. The default is 100. +Set a size to change the default.</li> +</ul> +<p>Example configuration:</p> +<pre><code class="language-yaml">background_updates: + background_update_duration_ms: 500 + sleep_enabled: false + sleep_duration_ms: 300 + min_batch_size: 10 + default_batch_size: 50 +</code></pre> + + </main> + + <nav class="nav-wrapper" aria-label="Page navigation"> + <!-- Mobile navigation buttons --> + <a rel="prev" href="../../usage/configuration/index.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left"> + <i class="fa fa-angle-left"></i> + </a> + <a rel="next" href="../../usage/configuration/homeserver_sample_config.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right"> + <i class="fa fa-angle-right"></i> + </a> + <div style="clear: both"></div> + </nav> + </div> + </div> + + <nav class="nav-wide-wrapper" aria-label="Page navigation"> + <a rel="prev" href="../../usage/configuration/index.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left"> + <i class="fa fa-angle-left"></i> + </a> + <a rel="next" href="../../usage/configuration/homeserver_sample_config.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right"> + <i class="fa fa-angle-right"></i> + </a> + </nav> + + </div> + + <script type="text/javascript"> + window.playground_copyable = true; + </script> + <script src="../../elasticlunr.min.js" type="text/javascript" charset="utf-8"></script> + <script src="../../mark.min.js" type="text/javascript" charset="utf-8"></script> + <script src="../../searcher.js" type="text/javascript" charset="utf-8"></script> + <script src="../../clipboard.min.js" type="text/javascript" charset="utf-8"></script> + <script src="../../highlight.js" type="text/javascript" charset="utf-8"></script> + <script src="../../book.js" type="text/javascript" charset="utf-8"></script> + + <!-- Custom JS scripts --> + <script type="text/javascript" src="../../docs/website_files/table-of-contents.js"></script> + </body> +</html> \ No newline at end of file |