multi-branch pipeline / kubernetes stage probem

[Gabe Nydick]

My Jenkinsfile is below...

There are 3 containers defined, each with their appropriate docker image. There are 3 stages defined, each one exclusively uses one of the containers.

While exec'd into all of the containers, each one of them have a

workspace/<long name>@/durable-<short name>/script.sh

the contents of that script in all three containers is the script from the stage called 'Create Docker Images'.

When that stage completes, jenkins moves on to the next stage, but then the durable-<short name> directory is gone. I then get the following error, which makes sense.

sh: /home/jenkins/workspace/h_ci-cd_dev_2018-08-13-kube-B25Q2OMNNSNLLVD3BXC7FMQBF3IKQYJE4OSTUSVSM65SZ6NCGBAQ@tmp/durable-170e31a9/script.sh: not found

Did I author the Jenkinsfile incorrectly or is this a bug in the pipeline?

def label = "jenkins-builder-${UUID.randomUUID().toString()}"

podTemplate(label: label, inheritFrom: 'jenkins-builder', containers: [
  containerTemplate(name: 'kubectl', image: '<redact>', command: 'cat', ttyEnabled: true),
  containerTemplate(name: 'helm', image: '<redact>', command: 'cat', ttyEnabled: true),
  containerTemplate(name: 'jnlp', image: '<redact>', command: 'cat', ttyEnabled: true)
],
  volumes: [
    hostPathVolume(mountPath: '/var/run/docker.sock', hostPath: '/var/run/docker.sock')
  ]) {
  node(label) {
    def myRepo = checkout scm
    def gitCommit = myRepo.GIT_COMMIT
    def gitBranch = myRepo.GIT_BRANCH
    def shortGitCommit = "${gitCommit[0..10]}"
    def previousGitCommit = sh(script: "git rev-parse ${gitCommit}~", returnStdout: true)

    stage('Create Docker images') {
      container('jenkins-agent') {
        sh """
          \$(aws ecr get-login --no-include-email --region=us-west-2 | sed 's/-e none//')
          docker build -t <redact>:${gitCommit} . -f base.Dockerfile
          docker push <redact>:${gitCommit}
          """
      }
    }
    stage('Run kubectl') {
      container('kubectl') {
        sh "kubectl get pods"
      }
    }
    stage('Run helm') {
      container('helm') {
        sh "helm list"
      }
    }
  }
}

[Carlos Sanchez]

Your example wouldn't even work, the jnlp container definition is wrong, can't use cat there

containerTemplate(name: 'jnlp', image: '<redact>', command: 'cat', ttyEnabled: true)

and then you try to use container('jenkins-agent') which is not defined

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[Gabe Nydick]

ha! good catch.

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[Gabe Nydick]

What was wrong about using 'cat' there? is it just the wrong health check?

[Carlos Sanchez]

the jnlp container needs to execute the jenkins agent, not cat

ha! good catch.

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[Gabe Nydick]

Also, I had already fixed the Jenkinsfile, but the problem still persists.

[Gabe Nydick]

Right, I fixed that.

ha! good catch.

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