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+                        <h1 id="setting-up-synapse-with-workers-and-systemd"><a class="header" href="#setting-up-synapse-with-workers-and-systemd">Setting up Synapse with Workers and Systemd</a></h1>
+<p>This is a setup for managing synapse with systemd, including support for
+managing workers. It provides a <code>matrix-synapse</code> service for the master, as
+well as a <code>matrix-synapse-worker@</code> service template for any workers you
+require. Additionally, to group the required services, it sets up a
+<code>matrix-synapse.target</code>.</p>
+<p>See the folder <a href="https://github.com/matrix-org/synapse/tree/develop/docs/systemd-with-workers/system/">system</a>
+for the systemd unit files.</p>
+<p>The folder <a href="https://github.com/matrix-org/synapse/tree/develop/docs/systemd-with-workers/workers/">workers</a>
+contains an example configuration for the <code>generic_worker</code> worker.</p>
+<h2 id="synapse-configuration-files"><a class="header" href="#synapse-configuration-files">Synapse configuration files</a></h2>
+<p>See <a href="../workers.html">the worker documentation</a> for information on how to set up the
+configuration files and reverse-proxy correctly.
+Below is a sample <code>generic_worker</code> worker configuration file.</p>
+<pre><code class="language-yaml">worker_app: synapse.app.generic_worker
+worker_name: generic_worker1
+
+worker_listeners:
+  - type: http
+    port: 8083
+    x_forwarded: true
+    resources:
+      - names: [client, federation]
+
+worker_log_config: /etc/matrix-synapse/generic-worker-log.yaml
+</code></pre>
+<p>Systemd manages daemonization itself, so ensure that none of the configuration
+files set either <code>daemonize</code> or <code>worker_daemonize</code>.</p>
+<p>The config files of all workers are expected to be located in
+<code>/etc/matrix-synapse/workers</code>. If you want to use a different location, edit
+the provided <code>*.service</code> files accordingly.</p>
+<p>There is no need for a separate configuration file for the master process.</p>
+<h2 id="set-up"><a class="header" href="#set-up">Set up</a></h2>
+<ol>
+<li>Adjust synapse configuration files as above.</li>
+<li>Copy the <code>*.service</code> and <code>*.target</code> files in <a href="https://github.com/matrix-org/synapse/tree/develop/docs/systemd-with-workers/system/">system</a>
+to <code>/etc/systemd/system</code>.</li>
+<li>Run <code>systemctl daemon-reload</code> to tell systemd to load the new unit files.</li>
+<li>Run <code>systemctl enable matrix-synapse.service</code>. This will configure the
+synapse master process to be started as part of the <code>matrix-synapse.target</code>
+target.</li>
+<li>For each worker process to be enabled, run <code>systemctl enable matrix-synapse-worker@&lt;worker_name&gt;.service</code>. For each <code>&lt;worker_name&gt;</code>, there
+should be a corresponding configuration file.
+<code>/etc/matrix-synapse/workers/&lt;worker_name&gt;.yaml</code>.</li>
+<li>Start all the synapse processes with <code>systemctl start matrix-synapse.target</code>.</li>
+<li>Tell systemd to start synapse on boot with <code>systemctl enable matrix-synapse.target</code>.</li>
+</ol>
+<h2 id="usage"><a class="header" href="#usage">Usage</a></h2>
+<p>Once the services are correctly set up, you can use the following commands
+to manage your synapse installation:</p>
+<pre><code class="language-sh"># Restart Synapse master and all workers
+systemctl restart matrix-synapse.target
+
+# Stop Synapse and all workers
+systemctl stop matrix-synapse.target
+
+# Restart the master alone
+systemctl start matrix-synapse.service
+
+# Restart a specific worker (eg. generic_worker); the master is
+# unaffected by this.
+systemctl restart matrix-synapse-worker@generic_worker.service
+
+# Add a new worker (assuming all configs are set up already)
+systemctl enable matrix-synapse-worker@federation_writer.service
+systemctl restart matrix-synapse.target
+</code></pre>
+<h2 id="hardening"><a class="header" href="#hardening">Hardening</a></h2>
+<p><strong>Optional:</strong> If further hardening is desired, the file
+<code>override-hardened.conf</code> may be copied from
+<a href="https://github.com/matrix-org/synapse/tree/develop/contrib/systemd/">contrib/systemd/override-hardened.conf</a>
+in this repository to the location
+<code>/etc/systemd/system/matrix-synapse.service.d/override-hardened.conf</code> (the
+directory may have to be created). It enables certain sandboxing features in
+systemd to further secure the synapse service. You may read the comments to
+understand what the override file is doing. The same file will need to be copied to
+<code>/etc/systemd/system/matrix-synapse-worker@.service.d/override-hardened-worker.conf</code>
+(this directory may also have to be created) in order to apply the same
+hardening options to any worker processes.</p>
+<p>Once these files have been copied to their appropriate locations, simply reload
+systemd's manager config files and restart all Synapse services to apply the hardening options. They will automatically
+be applied at every restart as long as the override files are present at the
+specified locations.</p>
+<pre><code class="language-sh">systemctl daemon-reload
+
+# Restart services
+systemctl restart matrix-synapse.target
+</code></pre>
+<p>In order to see their effect, you may run <code>systemd-analyze security matrix-synapse.service</code> before and after applying the hardening options to see
+the changes being applied at a glance.</p>
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