[JENKINS-63449] Process apparently never started when using two Docker agents

Type: Bug
Resolution: Unresolved
Priority: Minor
Component/s: durable-task-plugin, pipeline
Labels:
None
Environment:
Ubuntu Xenial, Jenkins 2.239 with all plugins up-to-date

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The following Jenkins works fine:

pipeline {
    agent none
    stages {
        stage('Test') {
            agent {
                docker {
                    image 'node:14-alpine'
                    alwaysPull true
                }
            }
            steps {
                sh 'pwd'
                sh 'node --version'
            }
        }
    }
}

The following got some issues and it's stuck on "docker pull node:14-alpine" (from Blue Ocean view):

pipeline {
    agent {
        dockerfile {
            filename 'docker/jenkins-agent/Dockerfile'
            additionalBuildArgs "--build-arg UID=113"
        }
    }

stages {
    stage('Test') {
          agent {
              docker {
                  image 'node:14-alpine'
                  alwaysPull true
              }
          }
          steps {
              sh 'node --version'
          }
      }
    }
}

When tried without "alwaysPull true", it got stuck on "docker inspect -f . node:14-alpine — Shell Script".

My Dockerfile:

FROM ubuntu:focal AS ubuntu
ENV DEBIAN_FRONTEND noninteractive
# Creates a user.
ARG UID=1001
RUN useradd -rm -d /home/jenkins -s /bin/bash -g root -u $UID jenkins
USER jenkins
WORKDIR /home/jenkins

Jenkins output:

...
[Pipeline] withEnv
[Pipeline] {
[Pipeline] isUnix
[Pipeline] sh (
(hang)

Error after timeout (docker pull node:14-alpine — Shell Script):

process apparently never started in /var/lib/jenkins/workspace/Deploy@2@tmp/durable-75354819 (running Jenkins temporarily with -Dorg.jenkinsci.plugins.durabletask.BourneShellScript.LAUNCH_DIAGNOSTICS=true might make the problem clearer) script returned exit code -2

My understanding is when specifying "agent" inside "stage" it should override/replace the outer "agent", but it seems Jenkins got some issues with this configuration.

kenorb created issue - 2020-08-19 18:07

kenorb made changes - 2020-08-19 18:12

Description

Original: The following Jenkins works fine:

{code:java}
pipeline {
    agent none
    stages {
        stage('Test') {
            agent {
                docker {
                    image 'node:14-alpine'
                    alwaysPull true
                }
            }
            steps {
                sh 'pwd'
                sh 'node --version'
            }
        }
    }
}
{code}

The following got some issues and it's stuck on "docker pull node:14-alpine" (from Blue Ocean view):

{code:java}
pipeline {
    agent {
        dockerfile {
            filename 'docker/jenkins-agent/Dockerfile'
            additionalBuildArgs "--build-arg UID=113"
        }
    }

stages {
    stage('Test') {
          agent {
              docker {
                  image 'node:14-alpine'
                  alwaysPull true
              }
          }
          steps {
              sh 'node --version'
          }
      }
    }
}{code}

When tried without "alwaysPull true", it got stuck on "docker inspect -f . node:14-alpine — Shell Script".

My Dockerfile:

{code:java}
FROM ubuntu:focal AS ubuntu
ENV DEBIAN_FRONTEND noninteractive
# Creates a user.
ARG UID=1001
RUN useradd -rm -d /home/jenkins -s /bin/bash -g root -u $UID jenkins
USER jenkins
WORKDIR /home/jenkins
{code}

Jenkins output:
{code:java}
...
[Pipeline] withEnv
[Pipeline] {
[Pipeline] isUnix
[Pipeline] sh (
(hang){code}
Error after timeout (docker pull node:14-alpine — Shell Script):
{code:java}
process apparently never started in /var/lib/jenkins/workspace/Deploy@2@tmp/durable-75354819 (running Jenkins temporarily with -Dorg.jenkinsci.plugins.durabletask.BourneShellScript.LAUNCH_DIAGNOSTICS=true might make the problem clearer) script returned exit code -2
{code}

New: The following Jenkins works fine:

{code:java}
pipeline {
    agent none
    stages {
        stage('Test') {
            agent {
                docker {
                    image 'node:14-alpine'
                    alwaysPull true
                }
            }
            steps {
                sh 'pwd'
                sh 'node --version'
            }
        }
    }
}
{code}

The following got some issues and it's stuck on "docker pull node:14-alpine" (from Blue Ocean view):

{code:java}
pipeline {
    agent {
        dockerfile {
            filename 'docker/jenkins-agent/Dockerfile'
            additionalBuildArgs "--build-arg UID=113"
        }
    }

stages {
    stage('Test') {
          agent {
              docker {
                  image 'node:14-alpine'
                  alwaysPull true
              }
          }
          steps {
              sh 'node --version'
          }
      }
    }
}{code}

When tried without "alwaysPull true", it got stuck on "docker inspect -f . node:14-alpine — Shell Script".

My Dockerfile:

{code:java}
FROM ubuntu:focal AS ubuntu
ENV DEBIAN_FRONTEND noninteractive
# Creates a user.
ARG UID=1001
RUN useradd -rm -d /home/jenkins -s /bin/bash -g root -u $UID jenkins
USER jenkins
WORKDIR /home/jenkins
{code}

Jenkins output:
{code:java}
...
[Pipeline] withEnv
[Pipeline] {
[Pipeline] isUnix
[Pipeline] sh (
(hang){code}
Error after timeout (docker pull node:14-alpine — Shell Script):
{code:java}
process apparently never started in /var/lib/jenkins/workspace/Deploy@2@tmp/durable-75354819 (running Jenkins temporarily with -Dorg.jenkinsci.plugins.durabletask.BourneShellScript.LAUNCH_DIAGNOSTICS=true might make the problem clearer) script returned exit code -2
{code}
----
My understanding is when specifying "agent" inside "stage" it should override/replace the outer "agent", but it seems Jenkins got some issues with this configuration.

kenorb made changes - 2020-08-19 19:53

Component/s

New: durable-task-plugin [ 18622 ]

Jenkins

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