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¿How to configure an Agent jenkins/inbound-agent with docker installed?

Miguel_Angel
Miguel_Angel Posts: 3
in LFS261 Class Forum

To follow the course, I installed my jenkins with HELM in k8s.
I am struggling to set up an Agent with docker installed.
I want to set up this one https://github.com/jenkinsci/jnlp-agents/tree/master/docker
https://hub.docker.com/r/jenkins/jnlp-agent-docker

Anyone can help me to substitute jenkins/inbound-agent:4.11-1 for jenkins/jnlp-agent-docker so I can have docker in the Agent?

Best Answer

  • gouravshah
    gouravshah Posts: 139
    Answer ✓

    @Miguel_Angel have you considered using kubernetes agent which launches a pod (with jnlp embedded into it as a container in addition to actual job container).

    Here is a sample Jenkinsfile (created from my existing pipeline, not tested)

    FIle: Jenkinsfile

    pipeline {

  agent {
    kubernetes {
      yamlFile 'build-agent.yaml'
      defaultContainer 'alpine'
      idleMinutes 1
    }
  }
  stages {
    stage('Sample Stage') {
      parallel {
        stage('this runs in a pod') {
          steps {
            container('alpine') {
              sh 'uptime'
            }
          }
        }
      }
    }
    }
}

    If you use configure above you would also have to add build agent config in its own file. For example,

    file : build-agent.yaml

    apiVersion: v1
kind: Pod
metadata:
  labels:
    app: xyz
spec:
  containers:
    - name: alpine
      image: alpine
      command:
        - cat
      tty: true

    Let me know if this could help.

Answers

  • Miguel_Angel
    Miguel_Angel Posts: 3

    more info.

    I created this pipeline
    pipeline {
    agent { label 'docker' }
    stages {
    stage('Run docker') {
    steps {
    sh 'docker version'
    }
    }
    }
    }

    I added this agent
    The agent

    pods get error
    ❯ k get po -n jenkins -w
    NAME READY STATUS RESTARTS AGE
    docker-5w0j0 1/2 Terminating 0 2s
    jenkins-0 2/2 Running 0 35m
    docker-5w0j0 0/2 Terminating 0 3s
    docker-bqp3z 0/2 Pending 0 0s
    docker-bqp3z 0/2 Pending 0 0s
    docker-bqp3z 0/2 ContainerCreating 0 0s
    docker-bqp3z 1/2 Error 0 1s
    docker-bqp3z 1/2 Terminating 0 1s
    docker-5w0j0 0/2 Terminating 0 11s
    docker-5w0j0 0/2 Terminating 0 11s
    docker-bqp3z 0/2 Terminating 0 3s
    docker-87ss1 0/2 Pending 0 0s
    docker-87ss1 0/2 Pending 0 0s
    docker-87ss1 0/2 ContainerCreating 0 0s
    docker-87ss1 1/2 Error 0 1s
    docker-87ss1 1/2 Terminating 0 1s

  • Miguel_Angel
    Miguel_Angel Posts: 3

    Thanks @gouravshah
    It was so easy to implement.
    It works great and clean and net solution

  • gouravshah
    gouravshah Posts: 139

    cool ! Thanks for the feedback @Miguel_Angel. Glad it helped.

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