<p><a href="http://kubernetes.io/docs/getting-started-guides/centos/centos_manual_config/" rel="nofollow">http://kubernetes.io/docs/getting-started-guides/centos/centos_manual_config/</a></p>

<p>"This guide will only get ONE node working. Multiple nodes requires a functional networking configuration done outside of kubernetes." </p>

<p>So, is a node made up of many hosts?<br>
I thought cluster is made up of many hosts. Is the cluster made up of many nodes instead?  </p>

<p>Each node had a master and minions so a cluster has more than one master?</p>

<ul>
<li><strong>Host</strong>: some machine (physical or virtual)</li>
<li><strong>Master</strong>: a host running Kubernetes API server and other master systems</li>
<li><strong>Node</strong>: a host running <code>kubelet</code> + <code>kube-proxy</code> that pods can be scheduled onto</li>
<li><strong>Cluster</strong>: a collection of one or masters + one or more nodes</li>
</ul>
