title: Are the master and worker nodes the same node in case of a single node cluster?
body: <p>I started a minikube cluster (single node cluster) on my local machine with the command:</p>
  <pre><code>minikube start --driver=virtualbox
  </code></pre>
  <p>Now, when I execute the command:</p>
  <pre><code>kubectl get nodes
  </code></pre>
  <p>it returns:</p>
  <pre><code> NAME       STATUS   ROLES    AGE     VERSION 
  minikube    Ready   master   2m59s    v1.19.0
  </code></pre>
  <p>My question is: since the cluster has only one node and according to the previous command it is a master node, what is the worker node? Are the master and worker nodes the same node in case of a single node cluster?</p>