Kubernetes 上 Jenkins 的持久卷

Question

我正在尝试在本地 Kubernetes 集群上部署 Jenkins 映像。 部署成功，但我无法使持久性数据正常工作。 没有抛出任何错误并且新的 pod 成功启动，唯一的问题是它不是持久的。

Jenkins Dockerfile：

FROM jenkins/jenkins:lts

ENV JENKINS_USER admin
ENV JENKINS_PASS admin

# Skip initial setup
ENV JAVA_OPTS -Djenkins.install.runSetupWizard=false


COPY plugins.txt /usr/share/jenkins/plugins.txt
RUN /usr/local/bin/install-plugins.sh < /usr/share/jenkins/plugins.txt
USER root
RUN apt-get update \
  && apt-get install -qqy apt-transport-https ca-certificates curl gnupg2 software-properties-common 
RUN curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add -
RUN add-apt-repository \
  "deb [arch=amd64] https://download.docker.com/linux/debian \
  $(lsb_release -cs) \
  stable"
RUN apt-get update  -qq \
  && apt-get install docker-ce -y
RUN usermod -aG docker jenkins
RUN apt-get clean
RUN curl -L "https://github.com/docker/compose/releases/download/1.24.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose && chmod +x /usr/local/bin/docker-compose
USER jenkins

Kubernetes 部署文件：

apiVersion: apps/v1
kind: Deployment
metadata:
  name: jenkins
spec:
  replicas: 1
  selector:
    matchLabels:
      app: jenkins
  template:
    metadata:
      labels:
        app: jenkins
    spec:
      containers:
        - name: jenkins
          image: mikemanders/my-jenkins-image:1.1
          env:
            - name: JAVA_OPTS
              value: -Djenkins.install.runSetupWizard=false
          ports:
            - name: http-port
              containerPort: 8080
            - name: jnlp-port
              containerPort: 50000
          volumeMounts:
            - name: jenkins-home
              mountPath: /var/lib/jenkins
              subPath: jenkins
      volumes:
        - name: jenkins-home
          persistentVolumeClaim:
            claimName: jenkins-pv-claim

Kubernetes 持久卷：

apiVersion: v1
kind: PersistentVolume
metadata:
  name: jenkins-pv
  labels:
    type: local
spec:
  storageClassName: manual
  capacity:
    storage: 6Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/var/lib"

持久卷声明

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: jenkins-pv-claim
spec:
  storageClassName: manual
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 2Gi

我正在使用 Minikube 进行本地开发。 当然还有 Kubectl。

不要看到我做错了什么。 感谢所有帮助。

Answer 1

常规 dockerhub jenkins 映像使用路径/var/jenkins_home ，而不是/var/lib/jenkins用于持久数据。 因此，您应该使用该路径来安装您的持久卷。