er.
</p>

<p>
Note that if you are going to start the nodes on different machines you need to specify the
ip-addresses or host names of the machines in <code>application.conf</code> instead of <code>127.0.0.1</code>.
</p>

<p>
Open <a href="#code/src/main/java/sample/cluster/simple/SimpleClusterApp.java" class="shortcut">SimpleClusterApp.java</a>.
</p>

<p>
The small program together with its configuration starts an ActorSystem with the Cluster enabled.
It joins the cluster and starts an actor that logs som