title: kubectl exec into container of a multi container pod
body: <p>I have problem login into one container of a multi-container pod.
  I get the container id from the <code>kubectl describe pod &lt;pod-name&gt;</code></p>
  
  <pre><code>kubectl describe pod ipengine-net-benchmark-488656591-gjrpc -c &lt;container id&gt; 
  </code></pre>
  
  <p>When i try: </p>
  
  <pre><code>kubectl exec -ti ipengine-net-benchmark-488656591-gjrpc -c 70761432854f /bin/bash
  </code></pre>
  
  <p>It says: Error from server: container 70761432854f is not valid for pod ipengine-net-benchmark-488656591-gjrpc</p>