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[Jenkins] Using pod template to run Jenkins agent on Kubernetes.

Posted on March 14, 2022May 4, 2022 By nim No Comments on [Jenkins] Using pod template to run Jenkins agent on Kubernetes.

Lại là 1 ngày đẹp trời mình run pipeline sau:

#!/usr/bin/env groovy
podTemplate(
  cloud: 'kubernetes',
  containers: [],
  workspaceVolume: persistentVolumeClaimWorkspaceVolume(
    claimName: 'jenkins-controller',
    readOnly: false
  ),
  yaml: '''
kind: Pod
spec:
  securityContext:
    runAsUser: 1000
    runAsGroup: 1000
    fsGroup: 1000
  containers:
    - name: trivy
      image: aquasec/trivy:latest
      imagePullPolicy: IfNotPresent
      command:
      - cat
      tty: true
      resources:
        requests:
          cpu: 50m
          memory: 100Mi
  imagePullSecrets:
  - name: nimtechnology-gcr
''') {
    node(POD_LABEL) {
        ws("/home/jenkins/agent/workspace/"){
            stage('Scan image with trivy') {
                container('trivy') {
                    sh(script: '''#!/bin/sh -xe
                sleep 3s
                pwd
                ls -la
                ''') }
            }   
        }
    }
}
cloud: ‘kubernetes’
Chỗ này bạn vào config clouds -> kubernetes

workspaceVolume: persistentVolumeClaimWorkspaceVolume(
claimName: ‘jenkins-controller’,
readOnly: false
)

Giờ chúng ta làm sao để config workspaceVolume.
Đầu tiên bạn xem con jenkins controller đang được config với PVC nào?

Ở đây bạn thấy là jenkins-controller đang cấu hình với PVC: jenkins-controller
Bạn sẽ thấy khi config sẽ mount PVC: jenkins-controller vào các con jenkins-agent.
Khi mà con jenkins-agent tạo ra file và folder thì nó cũng sẽ có trên con jenkins-controller
Bạn sẽ thấy là mình ls thì thấy được workspace của Job khác.

Nếu bạn gặp lỗi!!!!

Timed out waiting for websocket connection. You should increase the value of system property 

https://gvasanka.medium.com/workaround-lets-solve-the-jenkins-slave-connection-issue-with-the-jenkins-kubernetes-plugin-b0fb78f9aade

Bạn có thể tham khảo link trên.
Bạn thực hiện update các plugin Kubernetes Client API and Kubernetes

Giờ run build lại:

reference links:
https://devopscube.com/jenkins-build-agents-kubernetes/

Bạn tham khảo link trên để có thêm các config hữu ích nhe!

Jenkins

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