+
+h2. Synchronizing config file
+
+The Arvados configuration file must be kept in sync across every service node in the cluster. We strongly recommend using a devops configuration management tool such as "Puppet":https://puppet.com/open-source/ to synchronize the config file. Alternately, something like the following script to securely copy the configuration file to each node may be helpful. Replace the @ssh@ targets with your nodes.
+
+<notextile>
+<pre><code>#!/bin/sh
+sudo cat /etc/arvados/config.yml | ssh <span class="userinput">10.0.0.2</span> sudo sh -c "'cat > /etc/arvados/config.yml'"
+sudo cat /etc/arvados/config.yml | ssh <span class="userinput">10.0.0.3</span> sudo sh -c "'cat > /etc/arvados/config.yml'"
+</code></pre>
+</notextile>