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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 &quot;pid file&quot;,
+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>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>synctl -w $CONFIG/workers/worker1.yaml restart
+</code></pre>
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