title: Can't SSH connect to Google Cloud Compute Engine after rebooting
body: <p>I just restarted my google cloud compute engine instance and now I cannot SSH login to it. Before restarting, it worked fine. I tried fully stopping it and then starting again. There was a webserver on it and if I try to access any API method, I get timeout.</p>
  
  <p>If I try to login from console website:
  <a href="https://i.stack.imgur.com/NxF4O.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NxF4O.png" alt="enter image description here"></a></p>
  
  <p>If I try to login from terminal:</p>
  
  <pre><code>ssh: connect to host 104.197.20.65 port 22: Operation timed out
  ERROR: (gcloud.compute.ssh) [/usr/bin/ssh] exited with return code [255]. See https://cloud.google.com/compute/docs/troubleshooting#ssherrors for troubleshooting hints.
  </code></pre>
  
  <p>What is wrong?</p>