10

I am looking for a way to run a java process in background using Jenkins declarative pipeline. Below is the snippet of code

stage('Deploy'){
        steps{
            script{
                withEnv(['BUILD_ID=dontkill']) {
                    sh "nohup java -jar test-0.0.1-SNAPSHOT.war &"
                }
            }
        }
}

Already aware of ProcessTreeKiller of Jenkins and every answer suggest to do the same. I have tried using environment inside the steps block with no luck.

Jenkins version : 2.60.1

Pipeline plugin : 1.1.7

Any help is greatly appreciated.

  • What happens? Error message? Silent fail? – B Layer Jul 5 '17 at 8:55
  • I do not have a running java process. This is the final stage in my pipeline so my guess is that jenkins starts it and terminates it the very next moment. – Dharanidhar Jul 5 '17 at 8:57
  • What happens when you run the command directly on the slave? Log into the agent/slave host, go to the job's workspace (or if it was cleaned up manually copy in the war file somewhere.../tmp for example), and run everything between the double-quotes. – B Layer Jul 5 '17 at 13:13
  • Also, if the workspace was not wiped out look for a file named nohup.out in whatever directory the shell command would have run. nohup automatically logs to such a file when the output is not otherwise redirected. – B Layer Jul 5 '17 at 13:15
  • @BlairM the same script runs fine when i try it with jenkins user via a non-login non-interactive shell. Running in double quotes makes no difference. nohup.out is present but it is 0 KB. – Dharanidhar Jul 6 '17 at 7:57
12

Any one facing the same problem and using pipeline project, set JENKINS_NODE_COOKIE instead of BUILD_ID.

Dont waste your time setting HUDSON_COOKIE, HUDSON_SERVER_COOKIE, JENKINS_COOKIE or JENKINS_SERVER_COOKIE. None of them work for pipeline project.

Refer to https://issues.jenkins-ci.org/browse/JENKINS-28182 for more details.

  • 1
    Whoa, that's some inside baseball right there. Good to know. – B Layer Jul 16 '17 at 7:18

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