Since you're running `java -jar agent.jar -jnlpUrl
https://MASTER/computer/SLAVENAME/slave-agent.jnlp -secret SECRET` from a
command line, the ssh command invoked by command line git believes there is
a controlling terminal and prompts on that controlling terminal for the
passphrase.
You can probably prevent that prompt on Linux by adding `setsid` before
that command to launch the JNLP agent. The `setsid` command runs the
program in a new session, detached from the controlling terminal.
The new command would be:
setsid java -jar agent.jar -jnlpUrl
https://MASTER/computer/SLAVENAME/slave-agent.jnlp -secret SECRET
There is a Java property that attempts to force that behavior. For
compatibility purposes, that property defaults to false. You should be
able to set it to true with the additional argument:
-Dorg.jenkinsci.plugins.gitclient.USE_SETSID=true
Mark Waite
On Wed, May 2, 2018 at 7:42 AM Jannis Achstetter <
[email protected]> wrote:
> Hi,
>
>
>
> I'm facing an issue in a master/slave Jenkins setup. Version of master is
> 2.89.2, slaves are running Linux.
>
>
>
> If a node is connected via the "Launch slave agent via SSH" method,
> everything is working as expected.
>
>
>
> When I use the "Launch agent via Java Web Start" method and use this
> command to connect the node to the master:
>
> java -jar agent.jar -jnlpUrl
> https://MASTER/computer/SLAVENAME/slave-agent.jnlp -secret SECRET
>
> the node is connected successfully to the master and jobs are being
> executed.
>
>
>
> The problem arises when a second git repository is to be checked out
> during build with this step in our build pipelines:
>
> dir('keys') {
>
> git url:
> '[email protected]:ORG/REPO.git',
> credentialsId: 'MyCredentials'
>
> }
>
> ‘MyCredentials’ is a private SSH key with username and passphrase to
> decrypt the key, stored in the Jenkins master.
>
>
>
> The build times out after waiting 10 minutes for the step to finish with
> no relevant info (stack trace + exit code for SIGTERM + no stdout + no
> stderr) in the build log. However, on the terminal where the agent.jar was
> started there is this output:
>
> May 02, 2018 2:25:05 PM
> hudson.remoting.jnlp.Main$CuiListener status
>
> INFO: Connected
>
> Enter passphrase for key '/var/lib/jenkins/workspace/PROJECTNAME':
>
>
>
> So it seems that when using the WebStart-method, something is wrong with
> the stdin/stdout redirection. In the wiki (
> https://wiki.jenkins.io/display/JENKINS/Distributed+builds) it says:
> “execute the agent program like java -jar agent.jar, on the right computer,
> and have its stdin/stdout connect to your script's stdin/stdout”. I’m not
> sure if I’m doing something wrong because all examples for headless just
> run the java command as shown above.
>
>
>
> Any ideas if this is valid bug, I’m doing something wrong or that scenario
> is currently just not supported?
>
>
>
> Thanks!
>
>
>
> Jannis Achstetter
> Technical Engineer Mobility
> Innovation & Technology Digitization
> Industry Business
> Schneider Electric Automation GmbH
>
> D +49 9391 606 - 2897 <+49%209391%206062897>
> E [email protected]
>
> Schneiderplatz 1
> <https://maps.google.com/?q=Schneiderplatz+1+%0D%0A97828+Marktheidenfeld+%0D%0AGermany&entry=gmail&source=g>
> 97828 Marktheidenfeld
> <https://maps.google.com/?q=Schneiderplatz+1+%0D%0A97828+Marktheidenfeld+%0D%0AGermany&entry=gmail&source=g>
> Germany
> <https://maps.google.com/?q=Schneiderplatz+1+%0D%0A97828+Marktheidenfeld+%0D%0AGermany&entry=gmail&source=g>
>
> http://www.schneider-electric.com/ww/en/
>
>
>
>
>
> *Please consider the environment before printing this e-mail
>
>
>
>
>
> *Sitz der Gesellschaft:* Marktheidenfeld | Amtsgericht Würzburg | HRB
> 10733 | USt-IdNr. DE261529553
> * Geschäftsführer:* Thomas Martis, Ottmar Himmelsbach
>
>
>
>
>
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