title: How to expose a Kubernetes service externally using NodePort
body: <p>I run the CoreOS k8s cluster on Mac OSX, which means it's running inside VirtualBox + Vagrant</p>
  
  <p>I have in my service.yaml file:</p>
  
  <pre><code>spec:
    type: NodePort
  </code></pre>
  
  <p>When I type:</p>
  
  <pre><code>kubectl get services
  </code></pre>
  
  <p>I see:</p>
  
  <pre><code>NAME             CLUSTER_IP       EXTERNAL_IP   PORT(S)    SELECTOR                                
  kubernetes       10.100.0.1       &lt;none&gt;        443/TCP    &lt;none&gt;                             
  my-frontend      10.100.250.90    nodes         8000/TCP   name=my-app
  </code></pre>
  
  <p>What is the "nodes" external IP? How do I access my-frontend externally?</p>