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<main>
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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>
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<p>This is a setup for managing synapse with systemd, including support for
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managing workers. It provides a <code>matrix-synapse</code> service for the master, as
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well as a <code>matrix-synapse-worker@</code> service template for any workers you
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require. Additionally, to group the required services, it sets up a
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<code>matrix-synapse.target</code>.</p>
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<p>See the folder <a href="https://github.com/element-hq/synapse/tree/develop/docs/systemd-with-workers/system/">system</a>
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for the systemd unit files.</p>
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<p>The folder <a href="https://github.com/element-hq/synapse/tree/develop/docs/systemd-with-workers/workers/">workers</a>
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contains an example configuration for the <code>generic_worker</code> worker.</p>
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<h2 id="synapse-configuration-files"><a class="header" href="#synapse-configuration-files">Synapse configuration files</a></h2>
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<p>See <a href="../workers.html">the worker documentation</a> for information on how to set up the
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configuration files and reverse-proxy correctly.
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Below is a sample <code>generic_worker</code> worker configuration file.</p>
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<pre><code class="language-yaml">worker_app: synapse.app.generic_worker
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worker_name: generic_worker1
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worker_listeners:
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- type: http
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port: 8083
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x_forwarded: true
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resources:
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- names: [client, federation]
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worker_log_config: /etc/matrix-synapse/generic-worker-log.yaml
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</code></pre>
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<p>Systemd manages daemonization itself, so ensure that none of the configuration
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files set either <code>daemonize</code> or <code>worker_daemonize</code>.</p>
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<p>The config files of all workers are expected to be located in
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<code>/etc/matrix-synapse/workers</code>. If you want to use a different location, edit
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the provided <code>*.service</code> files accordingly.</p>
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<p>There is no need for a separate configuration file for the master process.</p>
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<h2 id="set-up"><a class="header" href="#set-up">Set up</a></h2>
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<ol>
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<li>Adjust synapse configuration files as above.</li>
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<li>Copy the <code>*.service</code> and <code>*.target</code> files in <a href="https://github.com/element-hq/synapse/tree/develop/docs/systemd-with-workers/system/">system</a>
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to <code>/etc/systemd/system</code>.</li>
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<li>Run <code>systemctl daemon-reload</code> to tell systemd to load the new unit files.</li>
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<li>Run <code>systemctl enable matrix-synapse.service</code>. This will configure the
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synapse master process to be started as part of the <code>matrix-synapse.target</code>
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||
target.</li>
|
||
<li>For each worker process to be enabled, run <code>systemctl enable matrix-synapse-worker@<worker_name>.service</code>. For each <code><worker_name></code>, there
|
||
should be a corresponding configuration file.
|
||
<code>/etc/matrix-synapse/workers/<worker_name>.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/element-hq/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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