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authorShay <hillerys@element.io>2022-06-14 07:53:42 -0700
committerGitHub <noreply@github.com>2022-06-14 07:53:42 -0700
commit493c2fc44abcf3457953cc2f6f23509ff7855253 (patch)
treef429a75b187fdd0449bc1a460ce730b6d2b2ccd2 /docs/sample_config.yaml
parentRename delta to apply in the proper schema version. (#13050) (diff)
downloadsynapse-493c2fc44abcf3457953cc2f6f23509ff7855253.tar.xz
Remove code generating comments in configuration file (#12941)
Diffstat (limited to 'docs/sample_config.yaml')
-rw-r--r--docs/sample_config.yaml2828
1 files changed, 8 insertions, 2820 deletions
diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml
index 56a25c534f..6578ec0229 100644
--- a/docs/sample_config.yaml
+++ b/docs/sample_config.yaml
@@ -1,27 +1,13 @@
 # This file is maintained as an up-to-date snapshot of the default
-# homeserver.yaml configuration generated by Synapse.
-#
-# It is intended to act as a reference for the default configuration,
-# helping admins keep track of new options and other changes, and compare
-# their configs with the current default.  As such, many of the actual
-# config values shown are placeholders.
+# homeserver.yaml configuration generated by Synapse. You can find a
+# complete accounting of possible configuration options at
+# https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html
 #
 # It is *not* intended to be copied and used as the basis for a real
 # homeserver.yaml. Instead, if you are starting from scratch, please generate
 # a fresh config using Synapse by following the instructions in
 # https://matrix-org.github.io/synapse/latest/setup/installation.html.
-
-# Configuration options that take a time period can be set using a number
-# followed by a letter. Letters have the following meanings:
-# s = second
-# m = minute
-# h = hour
-# d = day
-# w = week
-# y = year
-# For example, setting redaction_retention_period: 5m would remove redacted
-# messages from the database after 5 minutes, rather than 5 months.
-
+#
 ################################################################################
 
 # Configuration file for Synapse.
@@ -31,2825 +17,27 @@
 # should have the same indentation.
 #
 # [1] https://docs.ansible.com/ansible/latest/reference_appendices/YAMLSyntax.html
-
-
-## Modules ##
-
-# Server admins can expand Synapse's functionality with external modules.
-#
-# See https://matrix-org.github.io/synapse/latest/modules/index.html for more
-# documentation on how to configure or create custom modules for Synapse.
-#
-modules:
-  #- module: my_super_module.MySuperClass
-  #  config:
-  #    do_thing: true
-  #- module: my_other_super_module.SomeClass
-  #  config: {}
-
-
-## Server ##
-
-# The public-facing domain of the server
-#
-# The server_name name will appear at the end of usernames and room addresses
-# created on this server. For example if the server_name was example.com,
-# usernames on this server would be in the format @user:example.com
-#
-# In most cases you should avoid using a matrix specific subdomain such as
-# matrix.example.com or synapse.example.com as the server_name for the same
-# reasons you wouldn't use user@email.example.com as your email address.
-# See https://matrix-org.github.io/synapse/latest/delegate.html
-# for information on how to host Synapse on a subdomain while preserving
-# a clean server_name.
-#
-# The server_name 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.
-# Examples: matrix.org, localhost:8080
 #
+# For more information on how to configure Synapse, including a complete accounting of
+# each option, go to docs/usage/configuration/config_documentation.md or
+# https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html
 server_name: "SERVERNAME"
-
-# When running as a daemon, the file to store the pid in
-#
 pid_file: DATADIR/homeserver.pid
-
-# The absolute URL to the web client which / will redirect to.
-#
-#web_client_location: https://riot.example.com/
-
-# 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
-# 'listeners' below).
-#
-# Defaults to 'https://<server_name>/'.
-#
-#public_baseurl: https://example.com/
-
-# Uncomment the following to tell other servers to send federation traffic on
-# port 443.
-#
-# By default, other servers will try to reach our server on port 8448, which can
-# be inconvenient in some environments.
-#
-# Provided 'https://<server_name>/' on port 443 is routed to Synapse, this
-# option configures Synapse to serve a file at
-# 'https://<server_name>/.well-known/matrix/server'. This will tell other
-# servers to send traffic to port 443 instead.
-#
-# See https://matrix-org.github.io/synapse/latest/delegate.html for more
-# information.
-#
-# Defaults to 'false'.
-#
-#serve_server_wellknown: true
-
-# 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.
-#
-#soft_file_limit: 0
-
-# Presence tracking allows users to see the state (e.g online/offline)
-# of other local and remote users.
-#
-presence:
-  # Uncomment to disable presence tracking on this homeserver. This option
-  # replaces the previous top-level 'use_presence' option.
-  #
-  #enabled: false
-
-# 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 allow_profile_lookup_over_federation is set to false.
-#
-#require_auth_for_profile_requests: true
-
-# Uncomment 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'.
-#
-#limit_profile_requests_to_users_who_share_rooms: true
-
-# Uncomment 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'.
-#
-#include_profile_data_on_invite: false
-
-# 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'.
-#
-#allow_public_rooms_without_auth: true
-
-# If set to 'true', allows any other homeserver to fetch the server's public
-# rooms directory via federation. Defaults to 'false'.
-#
-#allow_public_rooms_over_federation: true
-
-# The default room version for newly created rooms.
-#
-# Known room versions are listed here:
-# https://spec.matrix.org/latest/rooms/#complete-list-of-room-versions
-#
-# For example, for room version 1, default_room_version should be set
-# to "1".
-#
-#default_room_version: "9"
-
-# The GC threshold parameters to pass to `gc.set_threshold`, if defined
-#
-#gc_thresholds: [700, 10, 10]
-
-# 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 `[1s, 10s, 30s]` indicates that a second must pass between consecutive
-# generation 0 GCs, etc.
-#
-# Defaults to `[1s, 10s, 30s]`.
-#
-#gc_min_interval: [0.5s, 30s, 1m]
-
-# Set the limit on the returned events in the timeline in the get
-# and sync operations. The default value is 100. -1 means no upper limit.
-#
-# Uncomment the following to increase the limit to 5000.
-#
-#filter_timeline_limit: 5000
-
-# Whether room invites to users on this server should be blocked
-# (except those sent by local server admins). The default is False.
-#
-#block_non_admin_invites: true
-
-# Room searching
-#
-# If disabled, new messages will not be indexed for searching and users
-# will receive errors when searching for messages. Defaults to enabled.
-#
-#enable_search: false
-
-# Prevent outgoing requests from being sent to the following blacklisted IP address
-# CIDR ranges. If this option is not specified then it defaults to private IP
-# address ranges (see the example below).
-#
-# The blacklist applies to the outbound requests for federation, identity servers,
-# push servers, and for checking key validity for third-party invite events.
-#
-# (0.0.0.0 and :: are always blacklisted, whether or not they are explicitly
-# listed here, since they correspond to unroutable addresses.)
-#
-# This option replaces federation_ip_range_blacklist in Synapse v1.25.0.
-#
-# Note: The value is ignored when an HTTP proxy is in use
-#
-#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'
-
-# 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.
-#
-# This whitelist overrides ip_range_blacklist and defaults to an empty
-# list.
-#
-#ip_range_whitelist:
-#   - '192.168.1.1'
-
-# List of ports that Synapse should listen on, their purpose and their
-# configuration.
-#
-# Options for each listener include:
-#
-#   port: the TCP port to bind to
-#
-#   bind_addresses: a list of local addresses to listen on. The default is
-#       'all local interfaces'.
-#
-#   type: the type of listener. Normally 'http', but other valid options are:
-#       'manhole' (see https://matrix-org.github.io/synapse/latest/manhole.html),
-#       'metrics' (see https://matrix-org.github.io/synapse/latest/metrics-howto.html),
-#       'replication' (see https://matrix-org.github.io/synapse/latest/workers.html).
-#
-#   tls: set to true to enable TLS for this listener. Will use the TLS
-#       key/cert specified in tls_private_key_path / tls_certificate_path.
-#
-#   x_forwarded: 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 reverse-proxy.
-#
-#   resources: Only valid for an 'http' listener. A list of resources to host
-#       on this port. Options for each resource are:
-#
-#       names: a list of names of HTTP resources. See below for a list of
-#           valid resource names.
-#
-#       compress: set to true to enable HTTP compression for this resource.
-#
-#   additional_resources: Only valid for an 'http' listener. A map of
-#        additional endpoints which should be loaded via dynamic modules.
-#
-# Valid resource names are:
-#
-#   client: the client-server API (/_matrix/client), and the synapse admin
-#       API (/_synapse/admin). Also implies 'media' and 'static'.
-#
-#   consent: user consent forms (/_matrix/consent).
-#       See https://matrix-org.github.io/synapse/latest/consent_tracking.html.
-#
-#   federation: the server-server API (/_matrix/federation). Also implies
-#       'media', 'keys', 'openid'
-#
-#   keys: the key discovery API (/_matrix/key).
-#
-#   media: the media API (/_matrix/media).
-#
-#   metrics: the metrics interface.
-#       See https://matrix-org.github.io/synapse/latest/metrics-howto.html.
-#
-#   openid: OpenID authentication.
-#
-#   replication: the HTTP replication API (/_synapse/replication).
-#       See https://matrix-org.github.io/synapse/latest/workers.html.
-#
-#   static: static resources under synapse/static (/_matrix/static). (Mostly
-#       useful for 'fallback authentication'.)
-#
 listeners:
-  # TLS-enabled listener: for when matrix traffic is sent directly to synapse.
-  #
-  # Disabled by default. To enable it, uncomment the following. (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]
-
-  # 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
-
-# Connection settings for the manhole
-#
-manhole_settings:
-  # The username for the manhole. This defaults to 'matrix'.
-  #
-  #username: manhole
-
-  # The password for the manhole. This defaults to 'rabbithole'.
-  #
-  #password: mypassword
-
-  # 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.
-  #
-  #ssh_priv_key_path: CONFDIR/id_rsa
-  #ssh_pub_key_path: CONFDIR/id_rsa.pub
-
-# 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
-# org.matrix.dummy_event event, which will reduce the forward extremities
-# in the room.
-#
-# 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.
-#
-#dummy_events_threshold: 5
-
-
-## Homeserver blocking ##
-
-# How to reach the server admin, used in ResourceLimitError
-#
-#admin_contact: 'mailto:admin@server.com'
-
-# Global blocking
-#
-#hs_disabled: false
-#hs_disabled_message: 'Human readable reason for why the HS is blocked'
-
-# Monthly Active User Blocking
-#
-# Used in cases where the admin or server owner wants to limit to the
-# number of monthly active users.
-#
-# 'limit_usage_by_mau' disables/enables monthly active user blocking. When
-# enabled and a limit is reached the server returns a 'ResourceLimitError'
-# with error type Codes.RESOURCE_LIMIT_EXCEEDED
-#
-# 'max_mau_value' is the hard limit of monthly active users above which
-# the server will start blocking user actions.
-#
-# 'mau_trial_days' is a means to add a grace period for active users. It
-# means that users must be active for this 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.
-#
-# The option `mau_appservice_trial_days` is similar to `mau_trial_days`, 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 `mau_trial_days` instead.
-#
-# 'mau_limit_alerting' 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
-#
-#limit_usage_by_mau: false
-#max_mau_value: 50
-#mau_trial_days: 2
-#mau_limit_alerting: false
-#mau_appservice_trial_days:
-#  "appservice-id": 1
-
-# If enabled, the metrics for the number of monthly active users will
-# be populated, however no one will be limited. If limit_usage_by_mau
-# is true, this is implied to be true.
-#
-#mau_stats_only: false
-
-# Sometimes the server admin will want to ensure certain accounts are
-# never blocked by mau checking. These accounts are specified here.
-#
-#mau_limit_reserved_threepids:
-#  - medium: 'email'
-#    address: 'reserved_user@example.com'
-
-# Used by phonehome stats to group together related servers.
-#server_context: context
-
-# Resource-constrained homeserver settings
-#
-# When this 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.
-#
-# Room complexity is an arbitrary measure based on factors such as the number of
-# users in the room.
-#
-limit_remote_rooms:
-  # Uncomment to enable room complexity checking.
-  #
-  #enabled: true
-
-  # the limit above which rooms cannot be joined. The default is 1.0.
-  #
-  #complexity: 0.5
-
-  # override the error which is returned when the room is too complex.
-  #
-  #complexity_error: "This room is too complex."
-
-  # allow server admins to join complex rooms. Default is false.
-  #
-  #admins_can_join: true
-
-# Whether to require a user to be in the room to add an alias to it.
-# Defaults to 'true'.
-#
-#require_membership_for_aliases: false
-
-# Whether to allow per-room membership profiles through the send of membership
-# events with profile information that differ from the target's global profile.
-# Defaults to 'true'.
-#
-#allow_per_room_profiles: false
-
-# The largest allowed file size for a user avatar. Defaults to no restriction.
-#
-# Note that user avatar changes will not work if this is set without
-# using Synapse's media repository.
-#
-#max_avatar_size: 10M
-
-# The MIME types allowed for user avatars. Defaults to no restriction.
-#
-# Note that user avatar changes will not work if this is set without
-# using Synapse's media repository.
-#
-#allowed_avatar_mimetypes: ["image/png", "image/jpeg", "image/gif"]
-
-# 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.
-#
-# Defaults to `7d`. Set to `null` to disable.
-#
-#redaction_retention_period: 28d
-
-# How long to track users' last seen time and IPs in the database.
-#
-# Defaults to `28d`. Set to `null` to disable clearing out of old rows.
-#
-#user_ips_max_age: 14d
-
-# Inhibits the /requestToken endpoints from returning an error that might leak
-# information about whether an e-mail address is in use or not on this
-# homeserver.
-# 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.
-#
-#request_token_inhibit_3pid_errors: true
-
-# A list of domains that the domain portion of 'next_link' parameters
-# must match.
-#
-# 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.
-#
-# The whitelist is applied whether the homeserver or an
-# identity server is handling validation.
-#
-# The default value is no whitelist functionality; all domains are
-# allowed. Setting this value to an empty list will instead disallow
-# all domains.
-#
-#next_link_domain_whitelist: ["matrix.org"]
-
-# Templates to use when generating email or HTML page contents.
-#
-templates:
-  # Directory in which Synapse will try to find template files 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.
-  #
-  # See https://matrix-org.github.io/synapse/latest/templates.html for more
-  # information about using custom templates.
-  #
-  #custom_template_directory: /path/to/custom/templates/
-
-# List of rooms to exclude from sync responses. This is useful for server
-# administrators wishing to group users into a room without these users being able
-# to see it from their client.
-#
-# By default, no room is excluded.
-#
-#exclude_rooms_from_sync:
-#    - !foo:example.com
-
-
-# Message retention policy at the server level.
-#
-# Room admins and mods can define a retention period for their rooms using the
-# 'm.room.retention' state event, and server admins can cap this period by setting
-# the 'allowed_lifetime_min' and 'allowed_lifetime_max' config options.
-#
-# 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.
-#
-retention:
-  # The message retention policies feature is disabled by default. Uncomment the
-  # following line to enable it.
-  #
-  #enabled: true
-
-  # Default retention policy. If set, Synapse will apply it to rooms that lack the
-  # 'm.room.retention' state event. Currently, the value of 'min_lifetime' doesn't
-  # matter much because Synapse doesn't take it into account yet.
-  #
-  #default_policy:
-  #  min_lifetime: 1d
-  #  max_lifetime: 1y
-
-  # Retention policy limits. If set, and the state of a room contains a
-  # 'm.room.retention' event in its state which contains a 'min_lifetime' or a
-  # 'max_lifetime' that's out of these bounds, Synapse will cap the room's policy
-  # to these limits when running purge jobs.
-  #
-  #allowed_lifetime_min: 1d
-  #allowed_lifetime_max: 1y
-
-  # Server admins can define the settings of the background jobs purging the
-  # events which lifetime has expired under the 'purge_jobs' section.
-  #
-  # If no configuration is provided, a single job will be set up to delete expired
-  # events in every room daily.
-  #
-  # Each job's configuration defines which range of message lifetimes the job
-  # takes care of. For example, if 'shortest_max_lifetime' is '2d' and
-  # 'longest_max_lifetime' is '3d', the job will handle purging expired events in
-  # rooms whose state defines a 'max_lifetime' 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 'shortest_max_lifetime' and a
-  # 'longest_max_lifetime' of '3d' will handle every room with a retention policy
-  # which 'max_lifetime' is lower than or equal to three days.
-  #
-  # The rationale for this per-job configuration is that some rooms might have a
-  # retention policy with a low 'max_lifetime', 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.
-  #
-  # If any purge job is configured, it is strongly recommended to have at least
-  # a single job with neither 'shortest_max_lifetime' nor 'longest_max_lifetime'
-  # set, or one job without 'shortest_max_lifetime' and one job without
-  # 'longest_max_lifetime' set. Otherwise some rooms might be ignored, even if
-  # 'allowed_lifetime_min' and 'allowed_lifetime_max' 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).
-  #
-  #purge_jobs:
-  #  - longest_max_lifetime: 3d
-  #    interval: 12h
-  #  - shortest_max_lifetime: 3d
-  #    interval: 1d
-
-
-## TLS ##
-
-# 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.
-#
-# Be sure to use a `.pem` file that includes the full certificate chain including
-# any intermediate certificates (for instance, if using certbot, use
-# `fullchain.pem` as your certificate, not `cert.pem`).
-#
-#tls_certificate_path: "CONFDIR/SERVERNAME.tls.crt"
-
-# PEM-encoded private key for TLS
-#
-#tls_private_key_path: "CONFDIR/SERVERNAME.tls.key"
-
-# Whether to verify TLS server certificates for outbound federation requests.
-#
-# Defaults to `true`. To disable certificate verification, uncomment the
-# following line.
-#
-#federation_verify_certificates: false
-
-# The minimum TLS version that will be used for outbound federation requests.
-#
-# Defaults to `1`. Configurable to `1`, `1.1`, `1.2`, or `1.3`. Note
-# that setting this value higher than `1.2` will prevent federation to most
-# of the public Matrix network: only configure it to `1.3` if you have an
-# entirely private federation setup and you can ensure TLS 1.3 support.
-#
-#federation_client_minimum_tls_version: 1.2
-
-# Skip federation certificate verification on the following whitelist
-# of domains.
-#
-# 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.
-#
-# Only effective if federation_verify_certicates is `true`.
-#
-#federation_certificate_verification_whitelist:
-#  - lon.example.com
-#  - "*.domain.com"
-#  - "*.onion"
-
-# List of custom certificate authorities for federation traffic.
-#
-# This setting should only normally be used within a private network of
-# homeservers.
-#
-# Note that this list will replace those that are provided by your
-# operating environment. Certificates must be in PEM format.
-#
-#federation_custom_ca_list:
-#  - myCA1.pem
-#  - myCA2.pem
-#  - myCA3.pem
-
-
-## Federation ##
-
-# Restrict federation to the following 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.
-#
-#federation_domain_whitelist:
-#  - lon.example.com
-#  - nyc.example.com
-#  - syd.example.com
-
-# Report prometheus metrics on the age of PDUs being sent to and received from
-# the following 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.
-#
-# By default, no domains are monitored in this way.
-#
-#federation_metrics_domains:
-#  - matrix.org
-#  - example.com
-
-# Uncomment to disable profile lookup over federation. By default, the
-# Federation API allows other homeservers to obtain profile data of any user
-# on this homeserver. Defaults to 'true'.
-#
-#allow_profile_lookup_over_federation: false
-
-# Uncomment to allow device display name lookup over federation. By default, the
-# Federation API prevents other homeservers from obtaining the display names of
-# user devices on this homeserver. Defaults to 'false'.
-#
-#allow_device_name_lookup_over_federation: true
-
-
-## Caching ##
-
-# Caching can be configured through the following options.
-#
-# 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.
-#
-# The configuration for cache factors (caches.global_factor and
-# caches.per_cache_factors) can be reloaded while the application is running,
-# by sending a SIGHUP signal to the Synapse process. Changes to other parts of
-# the caching config will NOT be applied after a SIGHUP is received; a restart
-# is necessary.
-
-# The number of events to cache in memory. Not affected by
-# caches.global_factor.
-#
-#event_cache_size: 10K
-
-caches:
-  # 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.
-  #
-  # This can also be set by the "SYNAPSE_CACHE_FACTOR" environment
-  # variable. Setting by environment variable takes priority over
-  # setting through the config file.
-  #
-  # Defaults to 0.5, which will half the size of all caches.
-  #
-  #global_factor: 1.0
-
-  # A dictionary of cache name to cache factor for that individual
-  # cache. Overrides the global cache factor for a given cache.
-  #
-  # These can also be set through environment variables comprised
-  # of "SYNAPSE_CACHE_FACTOR_" + the name of the cache in capital
-  # letters and underscores. Setting by environment variable
-  # takes priority over setting through the config file.
-  # Ex. SYNAPSE_CACHE_FACTOR_GET_USERS_WHO_SHARE_ROOM_WITH_USER=2.0
-  #
-  # 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 `*stateGroupCache*` via an environment
-  # variable would be `SYNAPSE_CACHE_FACTOR_STATEGROUPCACHE=2.0`.
-  #
-  per_cache_factors:
-    #get_users_who_share_room_with_user: 2.0
-
-  # Controls whether cache entries are evicted after a specified time
-  # period. Defaults to true. Uncomment to disable this feature.
-  #
-  #expire_caches: false
-
-  # If expire_caches is enabled, this flag controls how long an entry can
-  # be in a cache without having been accessed before being evicted.
-  # Defaults to 30m. Uncomment to set a different time to live for cache entries.
-  #
-  #cache_entry_ttl: 30m
-
-  # This flag enables cache autotuning, and is further specified by the sub-options `max_cache_memory_usage`,
-  # `target_cache_memory_usage`, `min_cache_ttl`. These flags work in conjunction with each other to maintain
-  # a balance between cache memory usage and cache entry availability. You must be using jemalloc to utilize
-  # this option, and all three of the options must be specified for this feature to work.
-  #cache_autotuning:
-    # This flag sets a ceiling on 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 `target_memory_usage`, set in
-    # the flag below, or until the `min_cache_ttl` is hit.
-    #max_cache_memory_usage: 1024M
-
-    # This flag sets a rough target for the desired memory usage of the caches.
-    #target_cache_memory_usage: 758M
-
-    # 'min_cache_ttl` sets a limit under which newer cache entries are not evicted and is only applied when
-    # caches are actively being evicted/`max_cache_memory_usage` has been exceeded. This is to protect hot caches
-    # from being emptied while Synapse is evicting due to memory.
-    #min_cache_ttl: 5m
-
-  # 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.
-  #
-  # By default, this is zero, which means that sync responses are not cached
-  # at all.
-  #
-  #sync_response_cache_duration: 2m
-
-
-## Database ##
-
-# The 'database' setting defines the database that synapse uses to store all of
-# its data.
-#
-# 'name' gives the database engine to use: either 'sqlite3' (for SQLite) or
-# 'psycopg2' (for PostgreSQL).
-#
-# 'txn_limit' gives the maximum number of transactions to run per connection
-# before reconnecting. Defaults to 0, which means no limit.
-#
-# 'allow_unsafe_locale' 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 *not* recommended)
-# by setting 'allow_unsafe_locale' to true. Note that doing so may corrupt your database. You can find more information
-# here: https://matrix-org.github.io/synapse/latest/postgres.html#fixing-incorrect-collate-or-ctype and here:
-# https://wiki.postgresql.org/wiki/Locale_data_changes
-#
-# 'args' gives options which are passed through to the database engine,
-# except for options starting 'cp_', which are used to configure the Twisted
-# connection pool. For a reference to valid arguments, see:
-#   * for sqlite: https://docs.python.org/3/library/sqlite3.html#sqlite3.connect
-#   * for postgres: https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-PARAMKEYWORDS
-#   * for the connection pool: https://twistedmatrix.com/documents/current/api/twisted.enterprise.adbapi.ConnectionPool.html#__init__
-#
-#
-# Example SQLite configuration:
-#
-#database:
-#  name: sqlite3
-#  args:
-#    database: /path/to/homeserver.db
-#
-#
-# Example Postgres configuration:
-#
-#database:
-#  name: psycopg2
-#  txn_limit: 10000
-#  args:
-#    user: synapse_user
-#    password: secretpassword
-#    database: synapse
-#    host: localhost
-#    port: 5432
-#    cp_min: 5
-#    cp_max: 10
-#
-# For more information on using Synapse with Postgres,
-# see https://matrix-org.github.io/synapse/latest/postgres.html.
-#
 database:
   name: sqlite3
   args:
     database: DATADIR/homeserver.db
-
-
-## Logging ##
-
-# A yaml python logging config file as described by
-# https://docs.python.org/3.7/library/logging.config.html#configuration-dictionary-schema
-#
 log_config: "CONFDIR/SERVERNAME.log.config"
-
-
-## Ratelimiting ##
-
-# Ratelimiting settings for client actions (registration, login, messaging).
-#
-# Each ratelimiting configuration is made of two parameters:
-#   - per_second: number of requests a client can send per second.
-#   - burst_count: number of requests a client can send before being throttled.
-#
-# Synapse currently uses the following configurations:
-#   - one for messages that ratelimits sending based on the account the client
-#     is using
-#   - one for registration that ratelimits registration requests based on the
-#     client's IP address.
-#   - one for checking the validity of registration tokens that ratelimits
-#     requests based on the client's IP address.
-#   - one for login that ratelimits login requests based on the client's IP
-#     address.
-#   - one for login that ratelimits login requests based on the account the
-#     client is attempting to log into.
-#   - one for login that 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.
-#   - one for ratelimiting redactions by room admins. If this is not explicitly
-#     set then it uses the same ratelimiting as per rc_message. This is useful
-#     to allow room admins to deal with abuse quickly.
-#   - two for ratelimiting number of rooms a user can join, "local" for when
-#     users are joining rooms the server is already in (this is cheap) vs
-#     "remote" for when users are trying to join rooms not on the server (which
-#     can be more expensive)
-#   - one for ratelimiting how often a user or IP can attempt to validate a 3PID.
-#   - two for ratelimiting how often invites can be sent in a room or to a
-#     specific user.
-#   - one for ratelimiting 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.
-#
-# The defaults are as shown below.
-#
-#rc_message:
-#  per_second: 0.2
-#  burst_count: 10
-#
-#rc_registration:
-#  per_second: 0.17
-#  burst_count: 3
-#
-#rc_registration_token_validity:
-#  per_second: 0.1
-#  burst_count: 5
-#
-#rc_login:
-#  address:
-#    per_second: 0.17
-#    burst_count: 3
-#  account:
-#    per_second: 0.17
-#    burst_count: 3
-#  failed_attempts:
-#    per_second: 0.17
-#    burst_count: 3
-#
-#rc_admin_redaction:
-#  per_second: 1
-#  burst_count: 50
-#
-#rc_joins:
-#  local:
-#    per_second: 0.1
-#    burst_count: 10
-#  remote:
-#    per_second: 0.01
-#    burst_count: 10
-#
-#rc_3pid_validation:
-#  per_second: 0.003
-#  burst_count: 5
-#
-#rc_invites:
-#  per_room:
-#    per_second: 0.3
-#    burst_count: 10
-#  per_user:
-#    per_second: 0.003
-#    burst_count: 5
-#
-#rc_third_party_invite:
-#  per_second: 0.2
-#  burst_count: 10
-
-# Ratelimiting settings for incoming federation
-#
-# The rc_federation configuration is made up of the following settings:
-#   - window_size: window size in milliseconds
-#   - sleep_limit: number of federation requests from a single server in
-#     a window before the server will delay processing the request.
-#   - sleep_delay: duration in milliseconds to delay processing events
-#     from remote servers by if they go over the sleep limit.
-#   - reject_limit: maximum number of concurrent federation requests
-#     allowed from a single server
-#   - concurrent: number of federation requests to concurrently process
-#     from a single server
-#
-# The defaults are as shown below.
-#
-#rc_federation:
-#  window_size: 1000
-#  sleep_limit: 10
-#  sleep_delay: 500
-#  reject_limit: 50
-#  concurrent: 3
-
-# Target outgoing federation transaction frequency for sending read-receipts,
-# per-room.
-#
-# If we end up trying to send out more read-receipts, they will get buffered up
-# into fewer transactions.
-#
-#federation_rr_transactions_per_room_per_second: 50
-
-
-
-## Media Store ##
-
-# Enable the media store service in the Synapse master. Uncomment the
-# following if you are using a separate media store worker.
-#
-#enable_media_repo: false
-
-# Directory where uploaded images and attachments are stored.
-#
-media_store_path: "DATADIR/media_store"
-
-# Media storage providers allow media to be stored in different
-# locations.
-#
-#media_storage_providers:
-#  - module: file_system
-#    # Whether to store newly uploaded local files
-#    store_local: false
-#    # Whether to store newly downloaded remote files
-#    store_remote: false
-#    # Whether to wait for successful storage for local uploads
-#    store_synchronous: false
-#    config:
-#       directory: /mnt/some/other/directory
-
-# The largest allowed upload size in bytes
-#
-# If you are using a reverse proxy you may also need to set this value in
-# your reverse proxy's config. Notably Nginx has a small max body size by default.
-# See https://matrix-org.github.io/synapse/latest/reverse_proxy.html.
-#
-#max_upload_size: 50M
-
-# Maximum number of pixels that will be thumbnailed
-#
-#max_image_pixels: 32M
-
-# 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.
-#
-#dynamic_thumbnails: false
-
-# List of thumbnails to precalculate when an image is uploaded.
-#
-#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
-
-# Is the preview URL API enabled?
-#
-# 'false' by default: uncomment the following to enable it (and specify a
-# url_preview_ip_range_blacklist blacklist).
-#
-#url_preview_enabled: true
-
-# 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.
-#
-# (0.0.0.0 and :: are always blacklisted, whether or not they are explicitly
-# listed here, since they correspond to unroutable addresses.)
-#
-# This must be specified if url_preview_enabled is set. It is recommended that
-# you uncomment the following list as a starting point.
-#
-# Note: The value is ignored when an HTTP proxy is in use
-#
-#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'
-
-# List of IP address CIDR ranges that the URL preview spider is allowed
-# to access even if they are specified in url_preview_ip_range_blacklist.
-# 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.
-#
-#url_preview_ip_range_whitelist:
-#   - '192.168.1.1'
-
-# Optional list of URL matches that the URL preview spider is
-# denied from accessing.  You should use url_preview_ip_range_blacklist
-# 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.
-#
-# 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
-# https://docs.python.org/2/library/urlparse.html#urlparse.urlsplit
-# The values of the dictionary are treated as an 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.
-#
-#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]+$'
-
-# The largest allowed URL preview spidering size in bytes
-#
-#max_spider_size: 10M
-
-# 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.
-#
-# 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.
-#
-# Multiple values can be provided, and a weight can be added to each by
-# using quality value syntax (;q=). '*' translates to any language.
-#
-# Defaults to "en".
-#
-# Example:
-#
-# url_preview_accept_language:
-#   - en-UK
-#   - en-US;q=0.9
-#   - fr;q=0.8
-#   - *;q=0.7
-#
-url_preview_accept_language:
-#   - en
-
-
-# oEmbed allows for easier embedding content from a website. It can be
-# used for generating URLs previews of services which support it.
-#
-oembed:
-  # A default list of oEmbed providers is included with Synapse.
-  #
-  # Uncomment the following to disable using these default oEmbed URLs.
-  # Defaults to 'false'.
-  #
-  #disable_default_providers: true
-
-  # Additional files with oEmbed configuration (each should be in the
-  # form of providers.json).
-  #
-  # By default, this list is empty (so only the default providers.json
-  # is used).
-  #
-  #additional_providers:
-  #  - oembed/my_providers.json
-
-
-## Captcha ##
-# See docs/CAPTCHA_SETUP.md for full details of configuring this.
-
-# This homeserver's ReCAPTCHA public key. Must be specified if
-# enable_registration_captcha is enabled.
-#
-#recaptcha_public_key: "YOUR_PUBLIC_KEY"
-
-# This homeserver's ReCAPTCHA private key. Must be specified if
-# enable_registration_captcha is enabled.
-#
-#recaptcha_private_key: "YOUR_PRIVATE_KEY"
-
-# Uncomment to enable ReCaptcha checks when registering, preventing signup
-# unless a captcha is answered. Requires a valid ReCaptcha
-# public/private key. Defaults to 'false'.
-#
-#enable_registration_captcha: true
-
-# The API endpoint to use for verifying m.login.recaptcha responses.
-# Defaults to "https://www.recaptcha.net/recaptcha/api/siteverify".
-#
-#recaptcha_siteverify_api: "https://my.recaptcha.site"
-
-
-## TURN ##
-
-# The public URIs of the TURN server to give to clients
-#
-#turn_uris: []
-
-# The shared secret used to compute passwords for the TURN server
-#
-#turn_shared_secret: "YOUR_SHARED_SECRET"
-
-# The Username and password if the TURN server needs them and
-# does not use a token
-#
-#turn_username: "TURNSERVER_USERNAME"
-#turn_password: "TURNSERVER_PASSWORD"
-
-# How long generated TURN credentials last
-#
-#turn_user_lifetime: 1h
-
-# 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).
-#
-#turn_allow_guests: true
-
-
-## Registration ##
-#
-# Registration can be rate-limited using the parameters in the "Ratelimiting"
-# section of this file.
-
-# Enable registration for new users. Defaults to 'false'. It is highly recommended that if you enable registration,
-# you use either captcha, email, or token-based verification to verify that new users are not bots. In order to enable registration
-# without any verification, you must also set `enable_registration_without_verification`, found below.
-#
-#enable_registration: false
-
-# Enable registration without email or captcha verification. Note: this option is *not* recommended,
-# as registration without verification is a known vector for spam and abuse. Defaults to false. Has no effect
-# unless `enable_registration` is also enabled.
-#
-#enable_registration_without_verification: true
-
-# Time that a user's session remains valid for, after they log in.
-#
-# Note that this is not currently compatible with guest logins.
-#
-# Note also that this is calculated at login time: changes are not applied
-# retrospectively to users who have already logged in.
-#
-# By default, this is infinite.
-#
-#session_lifetime: 24h
-
-# Time that an access token remains valid for, if the session is
-# using refresh tokens.
-# For more information about refresh tokens, please see the manual.
-# Note that this only applies to clients which advertise support for
-# refresh tokens.
-#
-# Note also that this is calculated at login time and refresh time:
-# changes are not applied to existing sessions until they are refreshed.
-#
-# By default, this is 5 minutes.
-#
-#refreshable_access_token_lifetime: 5m
-
-# 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.
-#
-# Note also that this is calculated at login time and refresh time:
-# changes are not applied to existing sessions until they are refreshed.
-#
-# By default, this is infinite.
-#
-#refresh_token_lifetime: 24h
-
-# Time that an access token remains valid for, if the session is NOT
-# using refresh tokens.
-# 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.
-#
-# Note also that this is calculated at login time: changes are not applied
-# retrospectively to existing sessions for users that have already logged in.
-#
-# By default, this is infinite.
-#
-#nonrefreshable_access_token_lifetime: 24h
-
-# The user must provide all of the below types of 3PID when registering.
-#
-#registrations_require_3pid:
-#  - email
-#  - msisdn
-
-# Explicitly disable asking for MSISDNs from the registration
-# flow (overrides registrations_require_3pid if MSISDNs are set as required)
-#
-#disable_msisdn_registration: true
-
-# Mandate that users are only allowed to associate certain formats of
-# 3PIDs with accounts on this server.
-#
-#allowed_local_3pids:
-#  - medium: email
-#    pattern: '^[^@]+@matrix\.org$'
-#  - medium: email
-#    pattern: '^[^@]+@vector\.im$'
-#  - medium: msisdn
-#    pattern: '\+44'
-
-# Enable 3PIDs lookup requests to identity servers from this server.
-#
-#enable_3pid_lookup: true
-
-# Require users to submit a token during registration.
-# Tokens can be managed using the admin API:
-# https://matrix-org.github.io/synapse/latest/usage/administration/admin_api/registration_tokens.html
-# Note that `enable_registration` must be set to `true`.
-# Disabling this option will not delete any tokens previously generated.
-# Defaults to false. Uncomment the following to require tokens:
-#
-#registration_requires_token: true
-
-# Allow users to submit a token during registration to bypass any required 3pid
-# steps configured in `registrations_require_3pid`.
-# Defaults to false, requiring that registration tokens (if enabled) complete a 3pid flow.
-#
-#enable_registration_token_3pid_bypass: false
-
-# If set, allows registration of standard or admin accounts by anyone who
-# has the shared secret, even if registration is otherwise disabled.
-#
-#registration_shared_secret: <PRIVATE STRING>
-
-# 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.
-#
-#bcrypt_rounds: 12
-
-# 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.
-#
-#allow_guest_access: false
-
-# The identity server which we suggest that clients should use when users log
-# in on this server.
-#
-# (By default, no suggestion is made, so it is left up to the client.
-# This setting is ignored unless public_baseurl is also explicitly set.)
-#
-#default_identity_server: https://matrix.org
-
-# Handle threepid (email/phone etc) registration and password resets through a set of
-# *trusted* identity servers. Note that this allows the configured identity server to
-# reset passwords for accounts!
-#
-# Be aware that if `email` is not set, and SMTP options have not been
-# configured in the email config block, registration and user password resets via
-# email will be globally disabled.
-#
-# Additionally, if `msisdn` is not set, registration and password resets via msisdn
-# will be disabled regardless, and users will not be able to associate an msisdn
-# identifier to their account. This is due to Synapse currently not supporting
-# any method of sending SMS messages on its own.
-#
-# To enable using an identity server for operations regarding a particular third-party
-# identifier type, set the value to the URL of that identity server as shown in the
-# examples below.
-#
-# Servers handling the these requests must answer the `/requestToken` endpoints defined
-# by the Matrix Identity Service API specification:
-# https://matrix.org/docs/spec/identity_service/latest
-#
-account_threepid_delegates:
-    #email: https://example.com     # Delegate email sending to example.com
-    #msisdn: http://localhost:8090  # Delegate SMS sending to this local process
-
-# 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.
-#
-# Does not apply to server administrators. Defaults to 'true'
-#
-#enable_set_displayname: false
-
-# 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.
-#
-# Does not apply to server administrators. Defaults to 'true'
-#
-#enable_set_avatar_url: false
-
-# Whether users can change the 3PIDs associated with their accounts
-# (email address and msisdn).
-#
-# Defaults to 'true'
-#
-#enable_3pid_changes: false
-
-# Users who register on this homeserver will automatically be joined
-# to these rooms.
-#
-# 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. This behaviour can be customised with the settings below.
-# If the room already exists, make certain it is a publicly joinable
-# room. The join rule of the room must be set to 'public'.
-#
-#auto_join_rooms:
-#  - "#example:example.com"
-
-# Where auto_join_rooms are specified, setting this flag ensures that the
-# the rooms exist by creating them when the first user on the
-# homeserver registers.
-#
-# By default the auto-created rooms are publicly joinable from any federated
-# server. Use the autocreate_auto_join_rooms_federated and
-# autocreate_auto_join_room_preset settings below to customise this behaviour.
-#
-# Setting to false means that if the rooms are not manually created,
-# users cannot be auto-joined since they do not exist.
-#
-# Defaults to true. Uncomment the following line to disable automatically
-# creating auto-join rooms.
-#
-#autocreate_auto_join_rooms: false
-
-# Whether the auto_join_rooms that are auto-created are available via
-# federation. Only has an effect if autocreate_auto_join_rooms is true.
-#
-# Note that whether a room is federated cannot be modified after
-# creation.
-#
-# Defaults to true: the room will be joinable from other servers.
-# Uncomment the following to prevent users from other homeservers from
-# joining these rooms.
-#
-#autocreate_auto_join_rooms_federated: false
-
-# The room preset to use when auto-creating one of auto_join_rooms. Only has an
-# effect if autocreate_auto_join_rooms is true.
-#
-# This can be one of "public_chat", "private_chat", or "trusted_private_chat".
-# If a value of "private_chat" or "trusted_private_chat" is used then
-# auto_join_mxid_localpart must also be configured.
-#
-# Defaults to "public_chat", meaning that the room is joinable by anyone, including
-# federated servers if autocreate_auto_join_rooms_federated is true (the default).
-# Uncomment the following to require an invitation to join these rooms.
-#
-#autocreate_auto_join_room_preset: private_chat
-
-# The local part of the user id which is used to create auto_join_rooms if
-# autocreate_auto_join_rooms is true. If this is not provided then the
-# initial user account that registers will be used to create the rooms.
-#
-# The user id is also used to invite new users to any auto-join rooms which
-# are set to invite-only.
-#
-# It *must* be configured if autocreate_auto_join_room_preset is set to
-# "private_chat" or "trusted_private_chat".
-#
-# 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).
-#
-# Note that, if the room already exists, this user must be joined and
-# have the appropriate permissions to invite new members.
-#
-#auto_join_mxid_localpart: system
-
-# When auto_join_rooms is specified, setting this flag to false prevents
-# guest accounts from being automatically joined to the rooms.
-#
-# Defaults to true.
-#
-#auto_join_rooms_for_guests: false
-
-# Whether to inhibit errors raised when registering a new account if the user ID
-# already exists. If turned on, that requests to /register/available 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.
-#
-# Defaults to false.
-#
-#inhibit_user_in_use_error: true
-
-
-## Metrics ###
-
-# Enable collection and rendering of performance metrics
-#
-#enable_metrics: false
-
-# Enable sentry integration
-# 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 diseminate sensitive information
-# through insecure notification channels if so configured.
-#
-#sentry:
-#    dsn: "..."
-
-# Flags to enable Prometheus metrics which are not suitable to be
-# enabled by default, either for performance reasons or limited use.
-#
-metrics_flags:
-    # Publish synapse_federation_known_servers, a gauge of the number of
-    # servers this homeserver knows about, including itself. May cause
-    # performance problems on large homeservers.
-    #
-    #known_servers: true
-
-# Whether or not to report anonymized homeserver usage statistics.
-#
-#report_stats: true|false
-
-# The endpoint to report the anonymized homeserver usage statistics to.
-# Defaults to https://matrix.org/report-usage-stats/push
-#
-#report_stats_endpoint: https://example.com/report-usage-stats/push
-
-
-## API Configuration ##
-
-# Controls for the state that is shared with users who receive an invite
-# to a room
-#
-room_prejoin_state:
-   # By default, the following state event types are shared with users who
-   # receive invites to the room:
-   #
-   # - m.room.join_rules
-   # - m.room.canonical_alias
-   # - m.room.avatar
-   # - m.room.encryption
-   # - m.room.name
-   # - m.room.create
-   # - m.room.topic
-   #
-   # Uncomment the following to disable these defaults (so that only the event
-   # types listed in 'additional_event_types' are shared). Defaults to 'false'.
-   #
-   #disable_default_event_types: true
-
-   # Additional state event types to share with users when they are invited
-   # to a room.
-   #
-   # By default, this list is empty (so only the default event types are shared).
-   #
-   #additional_event_types:
-   #  - org.example.custom.event.type
-
-# 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.
-#
-# 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 *not* the puppeted user.
-#
-# Uncomment the following 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 'limit_usage_by_mau' etc
-# above.)
-#
-#track_puppeted_user_ips: true
-
-
-# A list of application service config files to use
-#
-#app_service_config_files:
-#  - app_service_1.yaml
-#  - app_service_2.yaml
-
-# Uncomment to enable tracking of application service IP addresses. Implicitly
-# enables MAU tracking for application service users.
-#
-#track_appservice_user_ips: true
-
-
-# a secret which is used to sign access tokens. If none is specified,
-# the registration_shared_secret is used, if one is given; otherwise,
-# a secret key is derived from the signing key.
-#
-#macaroon_secret_key: <PRIVATE STRING>
-
-# 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.
-#
-#form_secret: <PRIVATE STRING>
-
-## Signing Keys ##
-
-# Path to the signing key to sign messages with
-#
+media_store_path: DATADIR/media_store
 signing_key_path: "CONFDIR/SERVERNAME.signing.key"
-
-# The keys that the server used to sign messages with but won't use
-# to sign new messages.
-#
-old_signing_keys:
-  # For each key, `key` should be the base64-encoded public key, and
-  # `expired_ts`should be the time (in milliseconds since the unix epoch) that
-  # it was last used.
-  #
-  # It is possible to build an entry from an old signing.key file using the
-  # `export_signing_key` script which is provided with synapse.
-  #
-  # For example:
-  #
-  #"ed25519:id": { key: "base64string", expired_ts: 123456789123 }
-
-# How long key response published by this server is valid for.
-# Used to set the valid_until_ts in /key/v2 APIs.
-# Determines how quickly servers will query to check which keys
-# are still valid.
-#
-#key_refresh_interval: 1d
-
-# The trusted servers to download signing keys from.
-#
-# When we need to fetch a signing key, each server is tried in parallel.
-#
-# Normally, the connection to the key server is validated via TLS certificates.
-# Additional security can be provided by configuring a `verify key`, which
-# will make synapse check that the response is signed by that key.
-#
-# This setting supercedes an older setting named `perspectives`. The old format
-# is still supported for backwards-compatibility, but it is deprecated.
-#
-# 'trusted_key_servers' defaults to matrix.org, but using it will generate a
-# warning on start-up. To suppress this warning, set
-# 'suppress_key_server_warning' to true.
-#
-# Options for each entry in the list include:
-#
-#    server_name: the name of the server. required.
-#
-#    verify_keys: 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.
-#
-#    accept_keys_insecurely: a boolean. Normally, if `verify_keys` is unset,
-#       and federation_verify_certificates is not `true`, 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 `true` to override this
-#       behaviour.
-#
-# An example configuration might look like:
-#
-#trusted_key_servers:
-#  - server_name: "my_trusted_server.example.com"
-#    verify_keys:
-#      "ed25519:auto": "abcdefghijklmnopqrstuvwxyzabcdefghijklmopqr"
-#  - server_name: "my_other_trusted_server.example.com"
-#
 trusted_key_servers:
   - server_name: "matrix.org"
-
-# Uncomment the following to disable the warning that is emitted when the
-# trusted_key_servers include 'matrix.org'. See above.
-#
-#suppress_key_server_warning: true
-
-# The signing keys to use when acting as a trusted key server. If not specified
-# defaults to the server signing key.
-#
-# Can contain multiple keys, one per line.
-#
-#key_server_signing_keys_path: "key_server_signing_keys.key"
-
-
-## Single sign-on integration ##
-
-# The following settings can be used to make Synapse use a single sign-on
-# provider for authentication, instead of its internal password database.
-#
-# You will probably also want to set the following options to `false` to
-# disable the regular login/registration flows:
-#   * enable_registration
-#   * password_config.enabled
-#
-# You will also want to investigate the settings under the "sso" configuration
-# section below.
-
-# Enable SAML2 for registration and login. Uses pysaml2.
-#
-# At least one of `sp_config` or `config_path` must be set in this section to
-# enable SAML login.
-#
-# Once SAML support is enabled, a metadata file will be exposed at
-# https://<server>:<port>/_synapse/client/saml2/metadata.xml, 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
-# https://<server>:<port>/_synapse/client/saml2/authn_response.
-#
-saml2_config:
-  # `sp_config` is the configuration for the pysaml2 Service Provider.
-  # See pysaml2 docs for format of config.
-  #
-  # Default values will be used for the 'entityid' and 'service' settings,
-  # so it is not normally necessary to specify them unless you need to
-  # override them.
-  #
-  sp_config:
-    # Point this to the IdP's metadata. You must provide either a local
-    # file via the `local` attribute or (preferably) a URL via the
-    # `remote` attribute.
-    #
-    #metadata:
-    #  local: ["saml2/idp.xml"]
-    #  remote:
-    #    - url: https://our_idp/metadata.xml
-
-    # Allowed clock difference in seconds between the homeserver and IdP.
-    #
-    # Uncomment the below to increase the accepted time difference from 0 to 3 seconds.
-    #
-    #accepted_time_diff: 3
-
-    # By default, the user has to go to our login page first. If you'd like
-    # to allow IdP-initiated login, set 'allow_unsolicited: true' in a
-    # 'service.sp' section:
-    #
-    #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
-
-  # Instead of putting the config inline as above, you can specify a
-  # separate pysaml2 configuration file:
-  #
-  #config_path: "CONFDIR/sp_conf.py"
-
-  # The lifetime of a SAML session. This defines how long a user has to
-  # complete the authentication process, if allow_unsolicited is unset.
-  # The default is 15 minutes.
-  #
-  #saml_session_lifetime: 5m
-
-  # An external module can be provided here as a custom solution to
-  # mapping attributes returned from a saml provider onto a matrix user.
-  #
-  user_mapping_provider:
-    # The custom module's class. Uncomment to use a custom module.
-    #
-    #module: mapping_provider.SamlMappingProvider
-
-    # Custom configuration values for the module. Below options are
-    # intended for the built-in provider, they should be changed if
-    # using a custom module. This section will be passed as a Python
-    # dictionary to the module's `parse_config` method.
-    #
-    config:
-      # The SAML attribute (after mapping via the attribute maps) to use
-      # to derive the Matrix ID from. 'uid' by default.
-      #
-      # Note: This used to be configured by the
-      # saml2_config.mxid_source_attribute option. If that is still
-      # defined, its value will be used instead.
-      #
-      #mxid_source_attribute: displayName
-
-      # The mapping system to use for mapping the saml attribute onto a
-      # matrix ID.
-      #
-      # Options include:
-      #  * 'hexencode' (which maps unpermitted characters to '=xx')
-      #  * 'dotreplace' (which replaces unpermitted characters with
-      #     '.').
-      # The default is 'hexencode'.
-      #
-      # Note: This used to be configured by the
-      # saml2_config.mxid_mapping option. If that is still defined, its
-      # value will be used instead.
-      #
-      #mxid_mapping: dotreplace
-
-  # 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 user_ids
-  # 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'.
-  #
-  #grandfathered_mxid_source_attribute: upn
-
-  # It is possible to configure Synapse to only allow logins if SAML attributes
-  # match particular values. The requirements can be listed under
-  # `attribute_requirements` as shown below. All of the listed attributes must
-  # match for the login to be permitted.
-  #
-  #attribute_requirements:
-  #  - attribute: userGroup
-  #    value: "staff"
-  #  - attribute: department
-  #    value: "sales"
-
-  # If the metadata XML contains multiple IdP entities then the `idp_entityid`
-  # 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.
-  #
-  #idp_entityid: 'https://our_idp/entityid'
-
-
-# List of OpenID Connect (OIDC) / OAuth 2.0 identity providers, for registration
-# and login.
-#
-# Options for each entry include:
-#
-#   idp_id: 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 "oidc_config"
-#       configuration.)
-#
-#   idp_name: A user-facing name for this identity provider, which is used to
-#       offer the user a choice of login mechanisms.
-#
-#   idp_icon: 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.)
-#
-#   idp_brand: An optional brand for this identity provider, allowing clients
-#       to style the login flow according to the identity provider in question.
-#       See the spec for possible options here.
-#
-#   discover: set to 'false' to disable the use of the OIDC discovery mechanism
-#       to discover endpoints. Defaults to true.
-#
-#   issuer: Required. The OIDC issuer. Used to validate tokens and (if discovery
-#       is enabled) to discover the provider's endpoints.
-#
-#   client_id: Required. oauth2 client id to use.
-#
-#   client_secret: oauth2 client secret to use. May be omitted if
-#        client_secret_jwt_key is given, or if client_auth_method is 'none'.
-#
-#   client_secret_jwt_key: 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:
-#
-#          key: a pem-encoded signing key. Must be a suitable key for the
-#              algorithm specified. Required unless 'key_file' is given.
-#
-#          key_file: the path to file containing a pem-encoded signing key file.
-#              Required unless 'key' is given.
-#
-#          jwt_header: a dictionary giving properties to include in the JWT
-#              header. Must include the key 'alg', giving the algorithm used to
-#              sign the JWT, such as "ES256", using the JWA identifiers in
-#              RFC7518.
-#
-#          jwt_payload: an optional dictionary giving properties to include in
-#              the JWT payload. Normally this should include an 'iss' key.
-#
-#   client_auth_method: auth method to use when exchanging the token. Valid
-#       values are 'client_secret_basic' (default), 'client_secret_post' and
-#       'none'.
-#
-#   scopes: list of scopes to request. This should normally include the "openid"
-#       scope. Defaults to ["openid"].
-#
-#   authorization_endpoint: the oauth2 authorization endpoint. Required if
-#       provider discovery is disabled.
-#
-#   token_endpoint: the oauth2 token endpoint. Required if provider discovery is
-#       disabled.
-#
-#   userinfo_endpoint: the OIDC userinfo endpoint. Required if discovery is
-#       disabled and the 'openid' scope is not requested.
-#
-#   jwks_uri: URI where to fetch the JWKS. Required if discovery is disabled and
-#       the 'openid' scope is used.
-#
-#   skip_verification: 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.
-#
-#   user_profile_method: Whether to fetch the user profile from the userinfo
-#       endpoint, or to rely on the data returned in the id_token from the
-#       token_endpoint.
-#
-#       Valid values are: 'auto' or 'userinfo_endpoint'.
-#
-#       Defaults to 'auto', which uses the userinfo endpoint if 'openid' is
-#       not included in 'scopes'. Set to 'userinfo_endpoint' to always use the
-#       userinfo endpoint.
-#
-#   allow_existing_users: 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.
-#
-#   user_mapping_provider: Configuration for how attributes returned from a OIDC
-#       provider are mapped onto a matrix user. This setting has the following
-#       sub-properties:
-#
-#       module: The class name of a custom mapping module. Default is
-#           'synapse.handlers.oidc.JinjaOidcMappingProvider'.
-#           See https://matrix-org.github.io/synapse/latest/sso_mapping_providers.html#openid-mapping-providers
-#           for information on implementing a custom mapping provider.
-#
-#       config: Configuration for the mapping provider module. This section will
-#           be passed as a Python dictionary to the user mapping provider
-#           module's `parse_config` method.
-#
-#           For the default provider, the following settings are available:
-#
-#             subject_claim: name of the claim containing a unique identifier
-#                 for the user. Defaults to 'sub', which OpenID Connect
-#                 compliant providers should provide.
-#
-#             localpart_template: 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
-#                 'sso_auth_account_details.html' template). This template can
-#                 use the 'localpart_from_email' filter.
-#
-#             confirm_localpart: 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.
-#
-#             display_name_template: Jinja2 template for the display name to set
-#                 on first login. If unset, no displayname will be set.
-#
-#             email_template: Jinja2 template for the email address of the user.
-#                 If unset, no email address will be added to the account.
-#
-#             extra_attributes: 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.
-#
-#           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.
-#
-#   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
-#   `attribute_requirements` as shown below. All of the listed attributes must
-#   match for the login to be permitted. Additional attributes can be added to
-#   userinfo by expanding the `scopes` section of the OIDC config to retrieve
-#   additional information from the OIDC provider.
-#
-#   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
-#   below, the `family_name` claim MUST be "Stephensson", but the `groups`
-#   claim MUST contain "admin".
-#
-#   attribute_requirements:
-#     - attribute: family_name
-#       value: "Stephensson"
-#     - attribute: groups
-#       value: "admin"
-#
-# See https://matrix-org.github.io/synapse/latest/openid.html
-# for information on how to configure these options.
-#
-# For backwards compatibility, it is also possible to configure a single OIDC
-# provider via an 'oidc_config' setting. This is now deprecated and admins are
-# advised to migrate to the 'oidc_providers' format. (When doing that migration,
-# use 'oidc' for the idp_id to ensure that existing users continue to be
-# recognised.)
-#
-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"
-
-
-# Enable Central Authentication Service (CAS) for registration and login.
-#
-cas_config:
-  # Uncomment the following to enable authorization against a CAS server.
-  # Defaults to false.
-  #
-  #enabled: true
-
-  # The URL of the CAS authorization endpoint.
-  #
-  #server_url: "https://cas-server.com"
-
-  # The attribute of the CAS response to use as the display name.
-  #
-  # If unset, no displayname will be set.
-  #
-  #displayname_attribute: name
-
-  # It is possible to configure Synapse to only allow logins if CAS attributes
-  # match particular values. All of the keys in the mapping below must exist
-  # and the values must match the given value. Alternately if the given value
-  # is None then any value is allowed (the attribute just must exist).
-  # All of the listed attributes must match for the login to be permitted.
-  #
-  #required_attributes:
-  #  userGroup: "staff"
-  #  department: None
-
-
-# Additional settings to use with single-sign on systems such as OpenID Connect,
-# SAML2 and CAS.
-#
-# Server admins can configure custom templates for pages related to SSO. See
-# https://matrix-org.github.io/synapse/latest/templates.html for more information.
-#
-sso:
-    # 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.
-    #
-    #client_whitelist:
-    #  - https://riot.im/develop
-    #  - https://my.custom.client/
-
-    # Uncomment 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.
-    #
-    #update_profile_information: true
-
-
-# JSON web token integration. The following settings can be used to make
-# Synapse JSON web tokens for authentication, instead of its internal
-# password database.
-#
-# Each JSON Web Token needs to contain a "sub" (subject) claim, which is
-# used as the localpart of the mxid.
-#
-# Additionally, the expiration time ("exp"), not before time ("nbf"),
-# and issued at ("iat") claims are validated if present.
-#
-# Note that this is a non-standard login type and client support is
-# expected to be non-existent.
-#
-# See https://matrix-org.github.io/synapse/latest/jwt.html.
-#
-#jwt_config:
-    # Uncomment the following to enable authorization using JSON web
-    # tokens. Defaults to false.
-    #
-    #enabled: true
-
-    # This is either the private shared secret or the public key used to
-    # decode the contents of the JSON web token.
-    #
-    # Required if 'enabled' is true.
-    #
-    #secret: "provided-by-your-issuer"
-
-    # The algorithm used to sign the JSON web token.
-    #
-    # Supported algorithms are listed at
-    # https://pyjwt.readthedocs.io/en/latest/algorithms.html
-    #
-    # Required if 'enabled' is true.
-    #
-    #algorithm: "provided-by-your-issuer"
-
-    # Name of the claim containing a unique identifier for the user.
-    #
-    # Optional, defaults to `sub`.
-    #
-    #subject_claim: "sub"
-
-    # The issuer to validate the "iss" claim against.
-    #
-    # Optional, if provided the "iss" claim will be required and
-    # validated for all JSON web tokens.
-    #
-    #issuer: "provided-by-your-issuer"
-
-    # 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.
-    #
-    #audiences:
-    #    - "provided-by-your-issuer"
-
-
-password_config:
-   # Uncomment to disable password login.
-   # Set to `only_for_reauth` to permit reauthentication for users that
-   # have passwords and are already logged in.
-   #
-   #enabled: false
-
-   # Uncomment to disable authentication against the local password
-   # database. This is ignored if `enabled` is false, and is only useful
-   # if you have other password_providers.
-   #
-   #localdb_enabled: false
-
-   # Uncomment and change to a secret random string for extra security.
-   # DO NOT CHANGE THIS AFTER INITIAL SETUP!
-   #
-   #pepper: "EVEN_MORE_SECRET"
-
-   # Define and enforce a password policy. Each parameter is optional.
-   # This is an implementation of MSC2000.
-   #
-   policy:
-      # Whether to enforce the password policy.
-      # Defaults to 'false'.
-      #
-      #enabled: true
-
-      # Minimum accepted length for a password.
-      # Defaults to 0.
-      #
-      #minimum_length: 15
-
-      # Whether a password must contain at least one digit.
-      # Defaults to 'false'.
-      #
-      #require_digit: true
-
-      # 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'.
-      #
-      #require_symbol: true
-
-      # Whether a password must contain at least one lowercase letter.
-      # Defaults to 'false'.
-      #
-      #require_lowercase: true
-
-      # Whether a password must contain at least one uppercase letter.
-      # Defaults to 'false'.
-      #
-      #require_uppercase: true
-
-ui_auth:
-    # The amount of time to allow a user-interactive authentication session
-    # to be active.
-    #
-    # 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.
-    #
-    # This is ignored for potentially "dangerous" operations (including
-    # deactivating an account, modifying an account password, and
-    # adding a 3PID).
-    #
-    # Uncomment below to allow for credential validation to last for 15
-    # seconds.
-    #
-    #session_timeout: "15s"
-
-
-# Configuration for sending emails from Synapse.
-#
-# Server admins can configure custom templates for email content. See
-# https://matrix-org.github.io/synapse/latest/templates.html for more information.
-#
-email:
-  # The hostname of the outgoing SMTP server to use. Defaults to 'localhost'.
-  #
-  #smtp_host: mail.server
-
-  # The port on the mail server for outgoing SMTP. Defaults to 25.
-  #
-  #smtp_port: 587
-
-  # Username/password for authentication to the SMTP server. By default, no
-  # authentication is attempted.
-  #
-  #smtp_user: "exampleusername"
-  #smtp_pass: "examplepassword"
-
-  # Uncomment the following to require TLS transport security for SMTP.
-  # By default, Synapse will connect over plain text, and will then switch to
-  # TLS via STARTTLS *if the SMTP server supports it*. If this option is set,
-  # Synapse will refuse to connect unless the server supports STARTTLS.
-  #
-  #require_transport_security: true
-
-  # Uncomment the following to disable TLS for SMTP.
-  #
-  # 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.
-  #
-  #enable_tls: false
-
-  # notif_from 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 'app_name' (below), but may be overridden by the
-  # Matrix client application.
-  #
-  # Note that the placeholder must be written '%(app)s', including the
-  # trailing 's'.
-  #
-  #notif_from: "Your Friendly %(app)s homeserver <noreply@example.com>"
-
-  # app_name defines the default value for '%(app)s' in notif_from and email
-  # subjects. It defaults to 'Matrix'.
-  #
-  #app_name: my_branded_matrix_server
-
-  # Uncomment the following to enable sending emails for messages that the user
-  # has missed. Disabled by default.
-  #
-  #enable_notifs: true
-
-  # Uncomment the following to disable automatic subscription to email
-  # notifications for new users. Enabled by default.
-  #
-  #notif_for_new_users: false
-
-  # 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 riot_base_url; the old name is still
-  # supported for backwards-compatibility but is now deprecated.)
-  #
-  #client_base_url: "http://localhost/riot"
-
-  # Configure the time that a validation email will expire after sending.
-  # Defaults to 1h.
-  #
-  #validation_token_lifetime: 15m
-
-  # The web client location to direct users to during an invite. This is passed
-  # to the identity server as the org.matrix.web_client_location key. Defaults
-  # to unset, giving no guidance to the identity server.
-  #
-  #invite_client_location: https://app.element.io
-
-  # Subjects to use when sending emails from Synapse.
-  #
-  # The placeholder '%(app)s' will be replaced with the value of the 'app_name'
-  # setting above, or by a value dictated by the Matrix client application.
-  #
-  # If a subject isn't overridden in this configuration file, the value used as
-  # its example will be used.
-  #
-  #subjects:
-
-    # Subjects for notification emails.
-    #
-    # On top of the '%(app)s' placeholder, these can use the following
-    # placeholders:
-    #
-    #   * '%(person)s', which will be replaced by the display name of the user(s)
-    #      that sent the message(s), e.g. "Alice and Bob".
-    #   * '%(room)s', which will be replaced by the name of the room the
-    #      message(s) have been sent to, e.g. "My super room".
-    #
-    # See the example provided for each setting to see which placeholder can be
-    # used and how to use them.
-    #
-    # Subject to use to notify about one message from one or more user(s) in a
-    # room which has a name.
-    #message_from_person_in_room: "[%(app)s] You have a message on %(app)s from %(person)s in the %(room)s room..."
-    #
-    # Subject to use to notify about one message from one or more user(s) in a
-    # room which doesn't have a name.
-    #message_from_person: "[%(app)s] You have a message on %(app)s from %(person)s..."
-    #
-    # Subject to use to notify about multiple messages from one or more users in
-    # a room which doesn't have a name.
-    #messages_from_person: "[%(app)s] You have messages on %(app)s from %(person)s..."
-    #
-    # Subject to use to notify about multiple messages in a room which has a
-    # name.
-    #messages_in_room: "[%(app)s] You have messages on %(app)s in the %(room)s room..."
-    #
-    # Subject to use to notify about multiple messages in multiple rooms.
-    #messages_in_room_and_others: "[%(app)s] You have messages on %(app)s in the %(room)s room and others..."
-    #
-    # 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.
-    #messages_from_person_and_others: "[%(app)s] You have messages on %(app)s from %(person)s and others..."
-    #
-    # Subject to use to notify about an invite to a room which has a name.
-    #invite_from_person_to_room: "[%(app)s] %(person)s has invited you to join the %(room)s room on %(app)s..."
-    #
-    # Subject to use to notify about an invite to a room which doesn't have a
-    # name.
-    #invite_from_person: "[%(app)s] %(person)s has invited you to chat on %(app)s..."
-
-    # Subject for emails related to account administration.
-    #
-    # On top of the '%(app)s' placeholder, these one can use the
-    # '%(server_name)s' placeholder, which will be replaced by the value of the
-    # 'server_name' setting in your Synapse configuration.
-    #
-    # Subject to use when sending a password reset email.
-    #password_reset: "[%(server_name)s] Password reset"
-    #
-    # Subject to use when sending a verification email to assert an address's
-    # ownership.
-    #email_validation: "[%(server_name)s] Validate your email"
-
-
-
-## Push ##
-
-push:
-  # 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 (`event_id_only`).
-  # If clients choose the former, this option controls whether the
-  # notification request includes the content of the event (other details
-  # like the sender are still included). For `event_id_only` push, 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.
-  #
-  # The default value is "true" to include message details. Uncomment to only
-  # include the event ID and room ID in push notification payloads.
-  #
-  #include_content: false
-
-  # 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 *rooms* the user has unread messages in.
-  #
-  # The default value is "true", meaning push clients will see the number of
-  # rooms with unread messages in them. Uncomment to instead send the number
-  # of unread messages.
-  #
-  #group_unread_count_by_room: false
-
-
-## Rooms ##
-
-# Controls whether locally-created rooms should be end-to-end encrypted by
-# default.
-#
-# Possible options are "all", "invite", and "off". They are defined as:
-#
-# * "all": any locally-created room
-# * "invite": any room created with the "private_chat" or "trusted_private_chat"
-#             room creation presets
-# * "off": this option will take no effect
-#
-# The default value is "off".
-#
-# Note that this option will only affect rooms created after it is set. It
-# will also not affect rooms created by other servers.
-#
-#encryption_enabled_by_default_for_room_type: invite
-
-# Override the default power levels for rooms created on this server, per
-# room creation preset.
-#
-# The appropriate dictionary for the room preset will be applied on top
-# of the existing power levels content.
-#
-# 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
-# `power_level_content_override` parameter in the /createRoom API, but
-# is applied before that parameter.
-#
-# Valid keys are some or all of `private_chat`, `trusted_private_chat`
-# and `public_chat`. Inside each of those should be any of the
-# properties allowed in `power_level_content_override` in the
-# /createRoom API. If any property is missing, its default value will
-# continue to be used. If any property is present, it will overwrite
-# the existing default completely (so if the `events` property exists,
-# the default event power levels will be ignored).
-#
-#default_power_level_content_override:
-#    private_chat:
-#        "events":
-#            "com.example.myeventtype" : 0
-#            "m.room.avatar": 50
-#            "m.room.canonical_alias": 50
-#            "m.room.encryption": 100
-#            "m.room.history_visibility": 100
-#            "m.room.name": 50
-#            "m.room.power_levels": 100
-#            "m.room.server_acl": 100
-#            "m.room.tombstone": 100
-#        "events_default": 1
-
-
-
-# User Directory configuration
-#
-user_directory:
-    # Defines whether users can search the user directory. If false then
-    # empty responses are returned to all queries. Defaults to true.
-    #
-    # Uncomment to disable the user directory.
-    #
-    #enabled: false
-
-    # 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.
-    #
-    # 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.
-    # These indexes are built the first time Synapse starts; admins can
-    # manually trigger a rebuild via API following the instructions at
-    #     https://matrix-org.github.io/synapse/latest/usage/administration/admin_api/background_updates.html#run
-    #
-    # Uncomment to return search results containing all known users, even if that
-    # user does not share a room with the requester.
-    #
-    #search_all_users: true
-
-    # Defines whether to prefer local users in search query results.
-    # If True, local users are more likely to appear above remote users
-    # when searching the user directory. Defaults to false.
-    #
-    # Uncomment to prefer local over remote users in user directory search
-    # results.
-    #
-    #prefer_local_users: true
-
-
-# User Consent configuration
-#
-# for detailed instructions, see
-# https://matrix-org.github.io/synapse/latest/consent_tracking.html
-#
-# Parts of this section are required if enabling the 'consent' resource under
-# 'listeners', in particular 'template_dir' and 'version'.
-#
-# 'template_dir' gives the location of the templates for the HTML forms.
-# This directory should contain one subdirectory per language (eg, 'en', 'fr'),
-# and each language directory should contain the policy document (named as
-# '<version>.html') and a success page (success.html).
-#
-# 'version' 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.
-#
-# 'server_notice_content', if enabled, will send a user a "Server Notice"
-# asking them to consent to the privacy policy. The 'server_notices' section
-# must also be configured for this to work. Notices will *not* be sent to
-# guest users unless 'send_server_notice_to_guests' is set to true.
-#
-# 'block_events_error', 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.
-#
-# 'require_at_registration', 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.
-#
-# 'policy_name' is the display name of the policy users will see when registering
-# for an account. Has no effect unless `require_at_registration` is enabled.
-# Defaults to "Privacy Policy".
-#
-#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
-#
-
-
-
-# Settings for local room and user statistics collection. See
-# https://matrix-org.github.io/synapse/latest/room_and_user_statistics.html.
-#
-stats:
-  # Uncomment the following to disable room and user statistics. Note that doing
-  # so may cause certain features (such as the room directory) not to work
-  # correctly.
-  #
-  #enabled: false
-
-
-# Server Notices room configuration
-#
-# Uncomment this section to enable a room which can be used to send notices
-# from the server to users. It is a special room which cannot be left; notices
-# come from a special "notices" user id.
-#
-# If you uncomment this section, you *must* define the system_mxid_localpart
-# setting, which defines the id of the user which will be used to send the
-# notices.
-#
-# It's also possible to override the room name, the display name of the
-# "notices" user, and the avatar for the user.
-#
-#server_notices:
-#  system_mxid_localpart: notices
-#  system_mxid_display_name: "Server Notices"
-#  system_mxid_avatar_url: "mxc://server.com/oumMVlgDnLYFaPVkExemNVVZ"
-#  room_name: "Server Notices"
-
-
-
-# Uncomment 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.
-#
-#enable_room_list_search: false
-
-# The `alias_creation` option controls who's allowed to create aliases
-# on this server.
-#
-# 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".
-#
-# Missing user_id/room_id/alias fields default to "*".
-#
-# If no rules match the request is denied. An empty list means no one
-# can create aliases.
-#
-# Options for the rules include:
-#
-#   user_id: Matches against the creator of the alias
-#   alias: Matches against the alias being created
-#   room_id: Matches against the room ID the alias is being pointed at
-#   action: Whether to "allow" or "deny" the request if the rule matches
-#
-# The default is:
-#
-#alias_creation_rules:
-#  - user_id: "*"
-#    alias: "*"
-#    room_id: "*"
-#    action: allow
-
-# The `room_list_publication_rules` option controls who can publish and
-# which rooms can be published in the public room list.
-#
-# The format of this option is the same as that for
-# `alias_creation_rules`.
-#
-# 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 `alias: *` match.
-#
-# If no rules match the request is denied. An empty list means no one
-# can publish rooms.
-#
-# Options for the rules include:
-#
-#   user_id: Matches against the creator of the alias
-#   room_id: Matches against the room ID being published
-#   alias: Matches against any current local or canonical aliases
-#            associated with the room
-#   action: Whether to "allow" or "deny" the request if the rule matches
-#
-# The default is:
-#
-#room_list_publication_rules:
-#  - user_id: "*"
-#    alias: "*"
-#    room_id: "*"
-#    action: allow
-
-
-## Opentracing ##
-
-# These settings enable 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 other services which supports opentracing
-# (specifically those implemented with Jaeger).
-#
-opentracing:
-    # tracing is disabled by default. Uncomment the following line to enable it.
-    #
-    #enabled: true
-
-    # The list of homeservers we wish to send and receive span contexts and span baggage.
-    # See https://matrix-org.github.io/synapse/latest/opentracing.html.
-    #
-    # This is a list of regexes which are matched against the server_name of the
-    # homeserver.
-    #
-    # By default, it is empty, so no servers are matched.
-    #
-    #homeserver_whitelist:
-    #  - ".*"
-
-    # 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.
-    #
-    #force_tracing_for_users:
-    #  - "@user1:server_name"
-    #  - "@user2:server_name"
-
-    # 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 here:
-    # https://www.jaegertracing.io/docs/latest/sampling/.
-    #
-    #jaeger_config:
-    #  sampler:
-    #    type: const
-    #    param: 1
-    #  logging:
-    #    false
-
-
-## Workers ##
-
-# Disables sending of outbound federation transactions on the main process.
-# Uncomment if using a federation sender worker.
-#
-#send_federation: false
-
-# It is possible to run multiple federation sender workers, in which case the
-# work is balanced across them.
-#
-# This configuration must be shared between all federation sender workers, 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).
-#
-#federation_sender_instances:
-#  - federation_sender1
-
-# When using workers this should be a map from `worker_name` to the
-# HTTP replication listener of the worker, if configured.
-#
-#instance_map:
-#  worker1:
-#    host: localhost
-#    port: 8034
-
-# Experimental: When using workers you can define which workers should
-# handle event persistence and typing notifications. Any worker
-# specified here must also be in the `instance_map`.
-#
-#stream_writers:
-#  events: worker1
-#  typing: worker1
-
-# The worker that is used to run background tasks (e.g. cleaning up expired
-# data). If not provided this defaults to the main process.
-#
-#run_background_tasks_on: worker1
-
-# A shared secret used by the replication APIs to authenticate HTTP requests
-# from workers.
-#
-# By default this is unused and traffic is not authenticated.
-#
-#worker_replication_secret: ""
-
-
-# Configuration for Redis when using workers. This *must* be enabled when
-# using workers (unless using old style direct TCP configuration).
-#
-redis:
-  # Uncomment the below to enable Redis support.
-  #
-  #enabled: true
-
-  # Optional host and port to use to connect to redis. Defaults to
-  # localhost and 6379
-  #
-  #host: localhost
-  #port: 6379
-
-  # Optional password if configured on the Redis instance
-  #
-  #password: <secret_password>
-
-
-## Background Updates ##
-
-# 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.
-#
-background_updates:
-    # How long in milliseconds to run a batch of background updates for. Defaults to 100. Uncomment and set
-    # a time to change the default.
-    #
-    #background_update_duration_ms: 500
-
-    # Whether to sleep between updates. Defaults to True. Uncomment to change the default.
-    #
-    #sleep_enabled: false
-
-    # If sleeping between updates, how long in milliseconds to sleep for. Defaults to 1000. Uncomment
-    # and set a duration to change the default.
-    #
-    #sleep_duration_ms: 300
-
-    # Minimum size a batch of background updates can be. Must be greater than 0. Defaults to 1. Uncomment and
-    # set a size to change the default.
-    #
-    #min_batch_size: 10
-
-    # The batch size to use for the first iteration of a new background update. The default is 100.
-    # Uncomment and set a size to change the default.
-    #
-    #default_batch_size: 50