第七篇：kubernetes部署jenkins

说明： 总的目标是在k8s集群部署gitlab、jenkins，并且在本地提交代码到gitlab后jenkin流水线可以自动编译打包成为docker镜像然后部署到k8s中并实现客户端外部域名访问，在文档分为多个部分，其中涉及的技术有docker安装、k8s搭建、部署gitlab、部署jenkins、部署sonarqube、gitlab和jenkin联动、jenkins和sonarqube联动、pipline脚本编写、istio部署、istio服务网关等…

此文档接第六篇：kubernetes部署gitlab

这篇文档讲解的是如何在kubernetes中部署jenkins，部署istio的gateway和 virtualservice

1. 添加jenkins的pvc

主节点执行：kubectl apply -f pv-jenkins.yaml 内容如下：

apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv-jenkins
spec:
  capacity:
    storage: 3Gi
  volumeMode: Filesystem
  accessModes:
    - ReadWriteMany
  persistentVolumeReclaimPolicy: Retain
  storageClassName: "pv-jenkins"
  nfs:
    path: /dfs/k8s
    server: 192.168.100.230

2. 部署jenkins

主节点执行：kubectl apply -f jenkins.yaml 内容如下：

kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  namespace: devops
  name: service-reader
rules:
  - apiGroups: [""] # "" indicates the core API group
    resources: ["services"]
    verbs: ["get", "watch", "list"]
  - apiGroups: [""]
    resources: ["pods"]
    verbs: ["create","delete","get","list","patch","update","watch"]
  - apiGroups: [""]
    resources: ["pods/exec"]
    verbs: