In General

I'm trying to use label when using kubernetes-plugin for Jenkins, but I get a little bit confused. In my pipeline bellow I'm trying to build test job in parallel steps with different labels (agents).

I already have configured the plugin with pod template and container in my Jenkins config, where I use same settings as it's in the pipeline podTemplate defined.

Issue

The problem is that when I use agent label in stage 2 there is jnpl image running instead the image that I point in the config someimage:latest.

In stage 1 where I define the pod in pipeline there is no problem and the required images are running fine.

Question

What I'm doing wrong? Here is my jenkinsfile and config of the kubernetes-plugin in Jenkins:

def podTemplate = """
apiVersion: v1
kind: Pod
spec:
  containers:
  - name: k8s
    image: someimage:latest
    command:
    - sleep
    args:
    - infinity
    volumeMounts:
      - name: workspace-volume
        mountPath: /home/jenkins/agent
    workingDir: "/home/jenkins/agent"
  volumes:
      - name: "workspace-volume"
        persistentVolumeClaim:
          claimName: "jenkins-worker-pvc"
          readOnly: false
"""
pipeline {
    agent none
    stages {
        stage("Parallel") {
            parallel {
                stage("1.k8s") {
                    agent {
                        kubernetes {
                            yaml podTemplate
                            defaultContainer 'k8s'
                        }
                    }
                    steps {
                        sh """
                            mvn -version
                        """
                    }
                }
                stage("2. k8s") {
                    agent { label 'k8s' }
                    steps {
                        sh """
                            mvn -version
                        """
                    }
                }
                stage("win") {
                    agent { label 'windows' }
                    steps {
                        bat "dir"
                    }
                }
            }
        }
    }
}