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Type: Bug
Resolution: Unresolved
Priority: Major
Component/s: kubernetes-plugin
Labels:
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It seems I cannot define a default jnlp container to be used for all the pods and the plugin defaults always to "jenkins/inbound-agent:4.3-4".

I specified a custom image in the kubernetes configure clouds page, but the template has always no container and not even the custom ENV var that I specify.

The workaround I found, is to specify the jnlp in the yaml variable, but i'd prefer to have a global one.

Here the code:

 node("worker") {
    String yaml = """
kind: Pod
apiVersion: v1
spec:
  containers:
    - name: bash
      image: registry.example.com/registry/shell:bash5.0-alpine3.12
      imagePullPolicy: Always
      command: ["cat"]
      tty: true
    """  podTemplate(yaml: yaml) {
    node(POD_LABEL) {
        stage("Build for packaging") {
          container('bash') {
            sh label: "Build for packaging", script: """
set -e
echo "Test"
"""
          }
        }
    }
  }
}

Here the logs:

Jun 17, 2021 6:13:07 PM FINEST org.csanchez.jenkins.plugins.kubernetes.PodTemplateUtils
Parsed pod template from yaml: ---
apiVersion: "v1"
kind: "Pod"
spec:
  containers:
  - command:
    - "cat"
    image: "registry.example.com/registry/shell:bash5.0-alpine3.12"
    imagePullPolicy: "Always"
    name: "bash"
    tty: trueJun 17, 2021 6:13:13 PM FINE org.csanchez.jenkins.plugins.kubernetes.KubernetesCloud
In provisioning : []
Jun 17, 2021 6:13:13 PM FINE org.csanchez.jenkins.plugins.kubernetes.KubernetesCloud
Label "TestC_10-c7j6c" excess workload: 1, executors: 0
Jun 17, 2021 6:13:13 PM FINE org.csanchez.jenkins.plugins.kubernetes.KubernetesCloud
Template for label "TestC_10-c7j6c": TestC_10-c7j6c-rg2vb
Jun 17, 2021 6:13:13 PM FINEST org.csanchez.jenkins.plugins.kubernetes.KubernetesProvisioningLimits
kubernetes global limit: 1/10
Jun 17, 2021 6:13:13 PM FINEST org.csanchez.jenkins.plugins.kubernetes.KubernetesProvisioningLimits
TestC_10-c7j6c-rg2vb template limit: 1/2147483647
Jun 17, 2021 6:13:13 PM FINEST org.csanchez.jenkins.plugins.kubernetes.KubernetesCloud
Planned 1 Kubernetes agents with template "TestC_10-c7j6c-rg2vb"
Jun 17, 2021 6:13:14 PM FINEST org.csanchez.jenkins.plugins.kubernetes.KubernetesCloud
Building connection to Kubernetes kubernetes URL https://kubernetes.default namespace jenkins
Jun 17, 2021 6:13:14 PM FINE org.csanchez.jenkins.plugins.kubernetes.KubernetesFactoryAdapter
Creating Kubernetes client: KubernetesFactoryAdapter [serviceAddress=https://kubernetes.default, namespace=jenkins, caCertData=null, credentials=null, skipTlsVerify=false, connectTimeout=5, readTimeout=15]
Jun 17, 2021 6:13:14 PM FINE org.csanchez.jenkins.plugins.kubernetes.KubernetesFactoryAdapter
Proxy Settings for Cloud: false
Jun 17, 2021 6:13:14 PM FINE org.csanchez.jenkins.plugins.kubernetes.KubernetesClientProvider
Created new Kubernetes client: kubernetes io.fabric8.kubernetes.client.DefaultKubernetesClient@65831bf
Jun 17, 2021 6:13:14 PM FINE org.csanchez.jenkins.plugins.kubernetes.KubernetesCloud
Connected to Kubernetes kubernetes URL https://kubernetes.default/ namespace jenkins
Jun 17, 2021 6:13:14 PM FINEST org.csanchez.jenkins.plugins.kubernetes.PodTemplateUtils
Parsed pod template from yaml: ---
apiVersion: "v1"
kind: "Pod"
spec:
  containers:
  - command:
    - "cat"
    image: "registry.example.com/registry/shell:bash5.0-alpine3.12"
    imagePullPolicy: "Always"
    name: "bash"
    tty: trueJun 17, 2021 6:13:14 PM FINEST org.csanchez.jenkins.plugins.kubernetes.PodTemplateUtils
Combining pods, parent: ---
apiVersion: "v1"
kind: "Pod"
metadata: {}
spec:
  containers:
  - command:
    - "cat"
    image: "registry.example.com/registry/shell:bash5.0-alpine3.12"
    imagePullPolicy: "Always"
    name: "bash"
    tty: true
 template: ---
apiVersion: "v1"
kind: "Pod"
metadata:
  annotations:
    buildUrl: "http://jenkins.jenkins.svc.cluster.local:8080/job/TestC/10/"
    runUrl: "job/TestC/10/"
  labels:
    jenkins/jenkins-jenkins-agent: "true"
    jenkins/label-digest: "5eee0bc5e5793f888965251dee9e803c7e074684"
    jenkins/label: "TestC_10-c7j6c"
  name: "testc-10-c7j6c-rg2vb-jllp6"
spec:
  containers: []
  volumes:
  - emptyDir:
      medium: ""
    name: "workspace-volume"Jun 17, 2021 6:13:14 PM FINEST org.csanchez.jenkins.plugins.kubernetes.PodTemplateUtils
Pods combined: ---
apiVersion: "v1"
kind: "Pod"
metadata:
  annotations:
    buildUrl: "http://jenkins.jenkins.svc.cluster.local:8080/job/TestC/10/"
    runUrl: "job/TestC/10/"
  labels:
    jenkins/jenkins-jenkins-agent: "true"
    jenkins/label-digest: "5eee0bc5e5793f888965251dee9e803c7e074684"
    jenkins/label: "TestC_10-c7j6c"
  name: "testc-10-c7j6c-rg2vb-jllp6"
spec:
  containers:
  - command:
    - "cat"
    image: "registry.example.com/registry/shell:bash5.0-alpine3.12"
    imagePullPolicy: "Always"
    name: "bash"
    tty: true
  nodeSelector: {}
  volumes:
  - emptyDir:
      medium: ""
    name: "workspace-volume"Jun 17, 2021 6:13:14 PM FINEST org.csanchez.jenkins.plugins.kubernetes.PodTemplateBuilder
Pod built: ---
apiVersion: "v1"
kind: "Pod"
metadata:
  annotations:
    buildUrl: "http://jenkins.jenkins.svc.cluster.local:8080/job/TestC/10/"
    runUrl: "job/TestC/10/"
  labels:
    jenkins/jenkins-jenkins-agent: "true"
    jenkins/label-digest: "5eee0bc5e5793f888965251dee9e803c7e074684"
    jenkins/label: "TestC_10-c7j6c"
  name: "testc-10-c7j6c-rg2vb-jllp6"
spec:
  containers:
  - command:
    - "cat"
    image: "registry.example.com/registry/shell:bash5.0-alpine3.12"
    imagePullPolicy: "Always"
    name: "bash"
    tty: true
    volumeMounts:
    - mountPath: "/home/jenkins/agent"
      name: "workspace-volume"
      readOnly: false
  - env:
    - name: "JENKINS_SECRET"
      value: "b1ac3255b8ae76de67e1723b23c9ac68d81cb6ed388cc4ea13d5c17ccc08bf33"
    - name: "JENKINS_TUNNEL"
      value: "jenkins-agent.jenkins.svc.cluster.local:50000"
    - name: "JENKINS_AGENT_NAME"
      value: "testc-10-c7j6c-rg2vb-jllp6"
    - name: "JENKINS_NAME"
      value: "testc-10-c7j6c-rg2vb-jllp6"
    - name: "JENKINS_AGENT_WORKDIR"
      value: "/home/jenkins/agent"
    - name: "JENKINS_URL"
      value: "http://jenkins.jenkins.svc.cluster.local:8080/"
    image: "jenkins/inbound-agent:4.3-4"
    name: "jnlp"
    resources:
      limits: {}
      requests:
        memory: "256Mi"
        cpu: "100m"
    volumeMounts:
    - mountPath: "/home/jenkins/agent"
      name: "workspace-volume"
      readOnly: false
  nodeSelector:
    kubernetes.io/os: "linux"
  restartPolicy: "Never"
  volumes:
  - emptyDir:
      medium: ""
    name: "workspace-volume"

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