title: How to resolve Permission denied (publickey,gssapi-keyex,gssapi-with-mic)?
body: <p>This question may have been asked before but I don't understand the concept. Can you please help me here?</p>
  
  <p>Weird issue from this morning .. see i just push my file to google cloud computing then showing below error.. I don't know where to look that error.</p>
  
  <pre><code>ri@ri-desktop:~$ gcloud compute --project "project" ssh --zone "europe-west1-b" "instance"
  Warning: Permanently added '192.xx.xx.xx' (ECDSA) to the list of known hosts.
  Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
  ERROR: (gcloud.compute.ssh) [/usr/bin/ssh] exited with return code [255].
  </code></pre>