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  1. Jenkins
  2. JENKINS-53017

Jenkins slave can't connect via ssh to GCE instance

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      When setting up the GCE plugin, I'm unable to get the slave to connect properly. The logs show only an authentication error:

       

      Aug 13, 2018 2:44:45 PM null
      INFO: Connected via SSH.
      Aug 13, 2018 2:44:45 PM null
      WARNING: Authentication failed. Trying again...
      Aug 13, 2018 2:45:00 PM null
      INFO: Authenticating as jenkins
      Aug 13, 2018 2:45:00 PM null
      INFO: Connecting to 10.1.2.3 on port 22, with timeout 10000.
      Aug 13, 2018 2:45:00 PM null
      INFO: Connected via SSH.
      Aug 13, 2018 2:45:00 PM null
      WARNING: Authentication failed. Trying again...
      Aug 13, 2018 2:45:15 PM null
      INFO: Authenticating as jenkins
      Aug 13, 2018 2:45:15 PM null
      INFO: Connecting to 10.1.2.3 on port 22, with timeout 10000.
      Aug 13, 2018 2:45:16 PM null
      INFO: Connected via SSH.
      

      Eventually it throws a "bootstrapresult failed" error:

       

      Aug 13, 2018 2:50:36 PM null 
      WARNING: bootstrapresult failed
      

      I can't find any way to begin debugging this issue. The Google Cloud console shows that a new ssh key has been added to the metadata on the freshly provisioned instance, corresponding to the user that Jenkins will use, but I can't get any further logs from the system; logging into the freshly provisioned instance with a different user and examining /var/log/secure doesn't show any ssh login failures.

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            zombiemoose Rachel Yen
            alexandernc Alexander O'Donovan-Jones
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