You'll need to remove the entries in the '.profile' and/or '.bashrc' that
are doing things which are not allowed in a non-interactive shell. Either
that, or wrap them in conditionals which prevent them from being executed
in a non-interactive shell.
Mark Waite
On Friday, December 21, 2018 at 9:20:26 AM UTC-7, Philippe M. wrote:
>
> Hello,
>
> We are facing an issue using Jenkins 2.138.3 and connecting to certain
> machines (issue occurs with machines in redhat 7.2, not in 6.4 but not
> sure it's related).
>
> When we start the agent, we get this error, issue being that ssh gives
> "stdin:
> is not a tty"
>
> Full Jenkins log:
>
> SSHLauncher{host='XXX.XXX.X.XXX', port=22,
> credentialsId='XXXXXXXXXXXXXXXXXXX', jvmOptions='', javaPath='',
> prefixStartSlaveCmd='', suffixStartSlaveCmd='', launchTimeoutSeconds=210,
> maxNumRetries=10, retryWaitTime=15,
> sshHostKeyVerificationStrategy=hudson.plugins.sshslaves.verifiers.KnownHostsFileKeyVerificationStrategy,
>
> tcpNoDelay=true, trackCredentials=true}
>
> [12/21/18 16:41:19] [SSH] Opening SSH connection to XXX.XXX.X.XXX:22.
>
> [12/21/18 16:41:19] [SSH] SSH host key matches key in Known Hosts file.
> Connection will be allowed.
>
> [12/21/18 16:41:19] [SSH] Authentication successful.
>
> SSH connection reports a garbage before a command execution.
>
> Check your .bashrc, .profile, and so on to make sure it is quiet.
>
> The received junk text is as follows:
>
> stdin: is not a tty
>
>
>
> null
>
> [12/21/18 16:41:20] Launch failed - cleaning up connection
> [12/21/18 16:41:20] [SSH] Connection closed.
>
>
> How can this be fixed, searching for similar issues, I see fixes related
> to sudoers but we are not sudoing here.
> I also found issue could be triggered by Banner , but there is no banner
> either.
>
> Note that if we try non interactive mode, we have this which explains the
> issue faced by Jenkins I guess:
>
> ssh -T login@host:
> stty: standard input: Inappropriate ioctl for device
> stdin: is not a tty
> stdin: is not a tty
> stdin: is not a tty
>
>
> I tried to disable in /etc/profile stty if in non interactive mode, it
> fixed :
>
> stty: standard input: Inappropriate ioctl for device
>
> So I now have:
>
> ssh -T login@host:
> stdin: is not a tty
> stdin: is not a tty
> stdin: is not a tty
>
> But I am stuck here.
>
> Thanks in advance for your help.
> Regards
>
>
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