title: kubectl is not installed on GCE by default
body: <p>Following the <a href="https://cloud.google.com/container-engine/docs/before-you-begin" rel="noreferrer">guide</a> I'm trying to manage Google Container Engine cluster from another machine on Google Compute Engine. Here is the output from my GCE instance:</p>
  
  <pre><code>oleksandr_berezianskyi_gmail_com@docker-managed-jenkins:~$ sudo gcloud components update preview
  All components are up to date.
  oleksandr_berezianskyi_gmail_com@docker-managed-jenkins:~$ sudo gcloud components update alpha
  All components are up to date.
  oleksandr_berezianskyi_gmail_com@docker-managed-jenkins:~$ gcloud alpha container kubectl create -f cassandra.yaml
  ERROR: (gcloud.alpha.container.kubectl) This command requires the kubernetes client (kubectl), which is installed with the gcloud preview component. Run 'gcloud components update preview', or make sure kubectl is installed somewhere on your
   path.
  </code></pre>
  
  <p>As you see my Google Cloud SDK seems to be up-to-date but still not working properly on GCE. Is there something I'm missing?</p>