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- <h3 id="using-synctl-with-workers"><a class="header" href="#using-synctl-with-workers">Using synctl with workers</a></h3>
- <p>If you want to use <code>synctl</code> to manage your synapse processes, you will need to
- create an an additional configuration file for the main synapse process. That
- configuration should look like this:</p>
- <pre><code class="language-yaml">worker_app: synapse.app.homeserver
- </code></pre>
- <p>Additionally, each worker app must be configured with the name of a "pid file",
- to which it will write its process ID when it starts. For example, for a
- synchrotron, you might write:</p>
- <pre><code class="language-yaml">worker_pid_file: /home/matrix/synapse/worker1.pid
- </code></pre>
- <p>Finally, to actually run your worker-based synapse, you must pass synctl the <code>-a</code>
- commandline option to tell it to operate on all the worker configurations found
- in the given directory, e.g.:</p>
- <pre><code class="language-sh">synctl -a $CONFIG/workers start
- </code></pre>
- <p>Currently one should always restart all workers when restarting or upgrading
- synapse, unless you explicitly know it's safe not to. For instance, restarting
- synapse without restarting all the synchrotrons may result in broken typing
- notifications.</p>
- <p>To manipulate a specific worker, you pass the -w option to synctl:</p>
- <pre><code class="language-sh">synctl -w $CONFIG/workers/worker1.yaml restart
- </code></pre>
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