K8s 部署 Jenkins

使用k8s部署Jenkins比较简单, 稍微修改下就可以了 本yaml文件创建了一个devops的namespace, 然后创建了对应SA,role等, 最后创建了一个有状态的Jenkins 注意:

1. 修改对应的域名
2. 修改对应的存储类

jenkins.yaml 内容

---
apiVersion: v1
kind: Namespace
metadata:
  name: devops
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: jenkins
  namespace: devops
spec:
  selector:
    matchLabels:
      app: jenkins # has to match .spec.template.metadata.labels
  serviceName: "jenkins"
  replicas: 1
  template:
    metadata:
      labels:
        app: jenkins # has to match .spec.selector.matchLabels
    spec:
      serviceAccountName: "jenkins"
      terminationGracePeriodSeconds: 10
      containers:
      - name: jenkins
        image: jenkinsci/blueocean:1.25.7
        securityContext:
          runAsUser: 0                      #设置以ROOT用户运行容器
          privileged: true                  #拥有特权
        ports:
        - containerPort: 8080
          name: web
        - name: jnlp                        #jenkins slave与集群的通信口
          containerPort: 50000
        env:
        - name: LIMITS_MEMORY
          valueFrom:
            resourceFieldRef:
              resource: limits.memory
              divisor: 1Mi
        - name: "JAVA_OPTS" #设置变量，指定时区和 jenkins slave 执行者设置
          value: " 
                   -Xmx$(LIMITS_MEMORY)m 
                   -XshowSettings:vm 
                   -Dhudson.slaves.NodeProvisioner.initialDelay=0
                   -Dhudson.slaves.NodeProvisioner.MARGIN=50
                   -Dhudson.slaves.NodeProvisioner.MARGIN0=0.75
                   -Duser.timezone=Asia/Shanghai
                 "  
        volumeMounts:
        - name: home
          mountPath: /var/jenkins_home
  volumeClaimTemplates:
  - metadata:
      name: home
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: "openebs-hostpath" #修改为实际的
      resources:
        requests:
          storage: 5Gi

---
apiVersion: v1
kind: Service
metadata:
  name: jenkins
  namespace: devops
spec:
  selector:
    app: jenkins
  type: ClusterIP
  ports:
  - name: web
    port: 8080
    targetPort: 8080
    protocol: TCP
  - name: jnlp
    port: 50000
    targetPort: 50000
    protocol: TCP
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: jenkins
  namespace: devops
spec:
  rules:
  - host: jenkins.devops.svc #修改为对应域名
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: jenkins
            port:
              number: 8080
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: jenkins
  namespace: devops

---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: jenkins
rules:
  - apiGroups: ["extensions", "apps"]
    resources: ["deployments"]
    verbs: ["create", "delete", "get", "list", "watch", "patch", "update"]
  - apiGroups: [""]
    resources: ["services"]
    verbs: ["create", "delete", "get", "list", "watch", "patch", "update"]
  - apiGroups: [""]
    resources: ["pods"]
    verbs: ["create","delete","get","list","patch","update","watch"]
  - apiGroups: [""]
    resources: ["pods/exec"]
    verbs: ["create","delete","get","list","patch","update","watch"]
  - apiGroups: [""]
    resources: ["pods/log"]
    verbs: ["get","list","watch"]
  - apiGroups: [""]
    resources: ["secrets"]
    verbs: ["get"]

---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: jenkins
roleRef:
  kind: ClusterRole
  name: jenkins
  apiGroup: rbac.authorization.k8s.io
subjects:
- kind: ServiceAccount
  name: jenkins
  namespace: devops

应用yaml文件

kubectl apply -f jenkins.yaml