Kubernetes安装Jenkins的思路详解
作者:南宫乘风
环境
生产实践-k8s安装Jenkins和Jenkins Kubernetes插件
环境要求:你需要一个正常可以使用的Kubernetes集群,集群中可以使用的内存大于等于4G。
Kubernetes版本1.18
思路
Jenkins插件可以在Kubernetes集群中运行动态jenkins-slave代理。
基于Kubernetes的docker,自动化在Kubernetes中运行的Jenkins-slave代理的缩放。
该插件为每个jenkins-slave代理创建Kubernetes Pod,并在每个构建后停止它。
在Kubernetes中jenkins-slave代理启动,会自动连接到Jenkins主控制器。 对于某些环境变量,会自动注入:
Jenkins_URL:Jenkins Web界面URL
jenkins_secret:身份验证的秘密密钥
jenkins_agent_name:jenkins代理的名称
jenkins_name:jenkins代理的名称(已弃用。仅用于向后兼容性)
不需要在Kubernetes内运行Jenkins Controller。
1、NFS(动态存储)
#安装 yum install -y nfs-utils rpcbind mkdir -p /data/nfsdata # 修改配置 $ vim /etc/exports /data/nfsdata 192.168.31.* (rw,async,no_root_squash) # 使配置生效 $ exportfs -r # 服务端查看下是否生效 $ showmount -e localhost Export list for localhost: /data/nfsdata (everyone)
2、helm安装nfs-client
stable https://kubernetes.oss-cn-hangzhou.aliyuncs.com/charts helm添加这个源
下载helm包 helm pull aliyuncs/nfs-client-provisioner 解压 tar -zxvf nfs-client-provisioner-1.2.8.tgz 修复values.yaml 三处 image: repository: quay.io/external_storage/nfs-client-provisioner tag: v3.1.0-k8s1.11 pullPolicy: IfNotPresent nfs: server: 192.168.31.73 path: /data/nfsdata reclaimPolicy: Retain
3、创建namespace
kubectl create namespace jenkins kubectl get namespaces
4、持久化Jenkins数据
pvc.yaml
apiVersion: v1 kind: PersistentVolumeClaim metadata: name: jenkins-pvc namespace: jenkins spec: storageClassName: "nfsdata" accessModes: - ReadWriteMany resources: requests: storage: 10Gi
通过kubectl部署volume
kubectl apply -f pvc.yaml
5、创建service account
创建pod时,如果不指定服务账户,则会自动为其分配一个名为default的同一namespace中的服务账户。但是通常应用程序时存在权限不足的情况,所以需要我们自己创建一个服务账户。
①下载jenkins-sa.yaml
wget https://raw.githubusercontent.com/jenkins-infra/jenkins.io/master/content/doc/tutorials/kubernetes/installing-jenkins-on-kubernetes/jenkins-sa.yaml
②通过kubectl部署jenkins-sa.yaml
kubectl apply -f jenkins-sa.yaml
或者使用下面的文件
jenkins-sa.yaml
--- apiVersion: v1 kind: ServiceAccount metadata: name: jenkins namespace: jenkins --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRole metadata: annotations: rbac.authorization.kubernetes.io/autoupdate: "true" labels: kubernetes.io/bootstrapping: rbac-defaults name: jenkins rules: - apiGroups: - '*' resources: - statefulsets - services - replicationcontrollers - replicasets - podtemplates - podsecuritypolicies - pods - pods/log - pods/exec - podpreset - poddisruptionbudget - persistentvolumes - persistentvolumeclaims - jobs - endpoints - deployments - deployments/scale - daemonsets - cronjobs - configmaps - namespaces - events - secrets verbs: - create - get - watch - delete - list - patch - update - apiGroups: - "" resources: - nodes verbs: - get - list - watch - update --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: annotations: rbac.authorization.kubernetes.io/autoupdate: "true" labels: kubernetes.io/bootstrapping: rbac-defaults name: jenkins roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: jenkins subjects: - apiGroup: rbac.authorization.k8s.io kind: Group name: system:serviceaccounts:jenkins
6、安装Jenkins
jenkins-deployment.yaml
apiVersion: apps/v1 kind: Deployment metadata: name: jenkins namespace: jenkins spec: replicas: 1 selector: matchLabels: app: jenkins template: metadata: labels: app: jenkins spec: serviceAccountName: jenkins #指定我们前面创建的服务账号 containers: - name: jenkins image: registry.cn-hangzhou.aliyuncs.com/s-ops/jenkins:2.346 ports: - containerPort: 8080 - containerPort: 50000 volumeMounts: - name: jenkins-home mountPath: /var/jenkins_home volumes: - name: jenkins-home persistentVolumeClaim: claimName: jenkins-pvc #指定前面创建的PVC
通过kubectl部署jenkins-deployment.yaml
kubectl create -f jenkins-deployment.yaml -n jenkins
7、授权对Jenkins服务的访问权限
主要目的暴露外部访问Jenkins的8080端口,我将31400定义为8080的映射端口。
jenkins-service.yaml
apiVersion: v1 kind: Service metadata: name: jenkins namespace: jenkins spec: type: NodePort ports: - name: http port: 8080 targetPort: 8080 nodePort: 31400 - name: agent port: 50000 targetPort: 50000 nodePort: 31401 selector: app: jenkins
通过kubectl部署服务
kubectl create -f jenkins-service.yaml -n jenkins
8、打开浏览器IP:31400/
查看密码
kubectl get pod -n jenkins //查询podname kubectl logs podname -n jenkins ************************************************************* Jenkins initial setup is required. An admin user has been created and a password generated. Please use the following password to proceed to installation: cf8d9da9de0346fd90461be366915d76 This may also be found at: /var/jenkins_home/secrets/initialAdminPassword *************************************************************
选择推荐插件安装,创建管理员~完成!
到此这篇关于Kubernetes安装Jenkins的文章就介绍到这了,更多相关Kubernetes安装Jenkins内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!