# k8s-jenkins在kubernetes中持续部署

k8s-jenkins在kubernetes中持续部署

1. k8s-jenkins在kubernetes中持续部署

• Kubernetes Continuous Deploy插件：用于将资源配置部署到Kubernetes。
• 插件介绍：https://plugins.jenkins.io/kubernetes-cd
• 支持以下资源类型:
  • Deployment
  • Replica Set
  • Daemon Set
  • Pod
  • Job
  • Service
  • Ingress
  • Secret

2. 在jenkins安装插件

• 登陆jenkins
  
  

• 系统管理
  
  

• 点击插件管理
  
  

• 安装插件 ”Kubernetes Continuous Deploy“
  
  

• 直接安装
  
  

• 安装成功后会重启

3. 在jenkins中kubernetes持续部署

3.1 在pipeline中添加kubernetes的key

• 点击jenkins的pipeline项目
  
  

• 点击配置
  
  

• 找到pipeline语法
  
  

  点击流水线语法

• 在流水线配置kubernetesDeploy选项
  
  
  
  

  点击添加key

• k8s使用的kubeadm安装的，我们可以在/root/.kube/config查看里面内容, 就是我们的认证信息

  [root@k8s-master jenkins-master]# cd /root/.kube/
  [root@k8s-master .kube]# cat config
  apiVersion: v1
  clusters:
  - cluster:
      certificate-authority-data: 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
      server: https://10.100.24.81:6443
    name: kubernetes
  contexts:
  - context:
      cluster: kubernetes
      user: kubernetes-admin
    name: kubernetes-admin@kubernetes
  current-context: kubernetes-admin@kubernetes
  kind: Config
  preferences: {}
  users:
  - name: kubernetes-admin
    user:
      client-certificate-data: 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
      client-key-data: 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
  
  

• 配置key
  
  ![image]

• 在凭据里查看key
  
  

  a16f5236-7cdc-4216-a4ec-c52346751f56
  

3.2 部署案例

3.2.1 pipeline示例脚本

// 公共
def registry = "harbor.scajy.org"           // harbor的连接地址
// 项目
def project = "k8s"                      // harbor的项目目录
def app_name = "java-demo"                       // 项目名称
def image_name = "${registry}/${project}/${app_name}:${BUILD_NUMBER}"      // 推送harbor的全路径，BUILD_NUMBER是取得当前jenkins构建的号，为版本号
def git_address = "git@10.100.24.87:k8s/tomcat_java_demo.git"             // 根据项目要更换git地址
def base_image = "${registry}/library/tomcat:latest"                      // 构建项目需要的基础镜像
// 认证
def secret_name = "registry-pull-secret"
def docker_registry_auth = "b6085682-39e7-458f-96c0-f139fe17f2e1"       // harbor仓库key，这个key要去jenkins查找
def git_auth = "d8bf675c-5dd4-4bf4-a4f7-4e8c1be1c002"                   // git代码仓库的key，这个key要去jenkins查找
def k8s_auth = "a16f5236-7cdc-4216-a4ec-c52346751f56"                   // k8s连接的key

podTemplate(label: 'jenkins-slave', cloud: 'kubernetes', containers: [
    containerTemplate(
        name: 'jnlp',          // 模板
        image: "${registry}/library/jenkins-slave:1.8"       // jenkins-slave从服务器镜像
    ),
  ],
  volumes: [
    hostPathVolume(mountPath: '/var/run/docker.sock', hostPath: '/var/run/docker.sock'),
    hostPathVolume(mountPath: '/usr/bin/docker', hostPath: '/usr/bin/docker')
  ],
)
{
  node("jenkins-slave"){
      // 第一步
      stage('拉取代码'){
         checkout([$class: 'GitSCM', branches: [[name: '${Branch}']], userRemoteConfigs: [[credentialsId: "${git_auth}", url: "${git_address}"]]])
      }
      // 第二步
      stage('代码编译'){
          sh "mvn clean package -Dmaven.test.skip=true"
      }
      // 第三步
      stage('构建镜像'){
          withCredentials([usernamePassword(credentialsId: "${docker_registry_auth}", passwordVariable: 'password', usernameVariable: 'username')]) {
            sh """
              echo '
                FROM  ${base_image}
                RUN rm -rf /usr/local/tomcat/webapps/*
                ADD target/*.war /usr/local/tomcat/webapps/ROOT.war
              ' > Dockerfile
              ls
              ls target
              docker build -t ${image_name} .
              docker login -u ${username} -p '${password}' ${registry}
              docker push ${image_name}
            """
            }
      }
      // 第四步
      stage('部署到K8S平台'){
          sh """
          sed -i 's#\$IMAGE_NAME#${image_name}#' deploy.yml
          sed -i 's#\$SECRET_NAME#${secret_name}#' deploy.yml
          """
          kubernetesDeploy configs: 'deploy.yml', kubeconfigId: "${k8s_auth}"
      }

  }
}

3.2.2 上传在k8s部署的脚本deploy.yaml到gitlab项目里面

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: web
spec:
  replicas: 3
  selector:
    matchLabels:
      app: java-demo
  template:
    metadata:
      labels:
        app: java-demo
    spec:
      imagePullSecrets:
      - name: $SECRET_NAME
      containers:
      - name: tomcat
        image: $IMAGE_NAME
        ports:
        - containerPort: 8080
          name: web
        livenessProbe:
          httpGet:
            path: /
            port: 8080
          initialDelaySeconds: 60
          timeoutSeconds: 5
          failureThreshold: 12
        readinessProbe:
          httpGet:
            path: /
            port: 8080
          initialDelaySeconds: 60
          timeoutSeconds: 5
          failureThreshold: 12

---
apiVersion: v1
kind: Service
metadata:
  name: web
spec:
  type: NodePort
  selector:
    app: java-demo
  ports:
    - protocol: TCP
      port: 80
      targetPort: 8080

---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: web
spec:
  rules:
  - host: java.scajy.org
    http:
      paths:
      - path: /
        backend:
          serviceName: web
          servicePort: 80

• gitlab项目验证deploy部署配置文件是否上传
  
  

3.2.3 在jenkins里面开始部署

• 登陆jenkins
  
  

• 找到项目
  
  

• 点击项目配置
  
  

• 配置项目
  
  
  
  

  全部代码

  // 公共
  def registry = "harbor.scajy.org"           // harbor的连接地址
  // 项目
  def project = "k8s"                      // harbor的项目目录
  def app_name = "java-demo"                       // 项目名称
  def image_name = "${registry}/${project}/${app_name}:${BUILD_NUMBER}"      // 推送harbor的全路径，BUILD_NUMBER是取得当前jenkins构建的号，为版本号
  def git_address = "git@10.100.24.87:k8s/tomcat_java_demo.git"             // 根据项目要更换git地址
  def base_image = "${registry}/library/tomcat:latest"                      // 构建项目需要的基础镜像
  // 认证
  def secret_name = "registry-pull-secret"
  def docker_registry_auth = "b6085682-39e7-458f-96c0-f139fe17f2e1"       // harbor仓库key，这个key要去jenkins查找
  def git_auth = "d8bf675c-5dd4-4bf4-a4f7-4e8c1be1c002"                   // git代码仓库的key，这个key要去jenkins查找
  def k8s_auth = "a16f5236-7cdc-4216-a4ec-c52346751f56"                   // k8s连接的key
  
  podTemplate(label: 'jenkins-slave', cloud: 'kubernetes', containers: [
      containerTemplate(
          name: 'jnlp',          // 模板
          image: "${registry}/library/jenkins-slave:1.8"       // jenkins-slave从服务器镜像
      ),
    ],
    volumes: [
      hostPathVolume(mountPath: '/var/run/docker.sock', hostPath: '/var/run/docker.sock'),
      hostPathVolume(mountPath: '/usr/bin/docker', hostPath: '/usr/bin/docker')
    ],
  )
  {
    node("jenkins-slave"){
        // 第一步
        stage('拉取代码'){
           checkout([$class: 'GitSCM', branches: [[name: '${Branch}']], userRemoteConfigs: [[credentialsId: "${git_auth}", url: "${git_address}"]]])
        }
        // 第二步
        stage('代码编译'){
            sh "mvn clean package -Dmaven.test.skip=true"
        }
        // 第三步
        stage('构建镜像'){
            withCredentials([usernamePassword(credentialsId: "${docker_registry_auth}", passwordVariable: 'password', usernameVariable: 'username')]) {
              sh """
                echo '
                  FROM  ${base_image}
                  RUN rm -rf /usr/local/tomcat/webapps/*
                  ADD target/*.war /usr/local/tomcat/webapps/ROOT.war
                ' > Dockerfile
                ls
                ls target
                docker build -t ${image_name} .
                docker login -u ${username} -p '${password}' ${registry}
                docker push ${image_name}
              """
              }
        }
        // 第四步
        stage('部署到K8S平台'){
            sh """
            sed -i 's#\$IMAGE_NAME#${image_name}#' deploy.yml
            sed -i 's#\$SECRET_NAME#${secret_name}#' deploy.yml
            """
            kubernetesDeploy configs: 'deploy.yml', kubeconfigId: "${k8s_auth}"
        }
  
    }
  }
  
  

  经过前面的CI部署，我们这里增加了第四步，部署镜像到k8s集群

3.2.4 k8s创建harbor认证凭据

• 创建凭据命令

  [root@k8s-master test]# kubectl create secret docker-registry registry-pull-secret --docker-server=10.100.24.85 --docker-username=admin --docker-password=Aa123456--docker-email=admin@admin.com
  

3.2.5 构建执行

3.3 验证k8s集群是否部署

• 验证是否部署

  [root@k8s-master test]# kubectl get pods
  NAME                                      READY   STATUS    RESTARTS   AGE
  jenkins-0                                 1/1     Running   0          26h
  nfs-client-provisioner-5d99f8d7b9-562ff   1/1     Running   1          18d
  nginx-6799fc88d8-9fchc                    1/1     Running   0          17d
  web-56d4ff7c69-gnk5b                      0/1     Running   0          52s
  web-56d4ff7c69-szgq8                      1/1     Running   0          116s
  web-7cb8dccfb6-dpwtp                      1/1     Running   0          7m58s
  web-7cb8dccfb6-hzvm8                      1/1     Running   0          5m44s
  
  

• 验证service对外服务是否提供

  [root@k8s-master test]# kubectl get service
  NAME         TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                        AGE
  jenkins      NodePort    10.105.137.255   <none>        80:30006/TCP,50000:31876/TCP   26h
  kubernetes   ClusterIP   10.96.0.1        <none>        443/TCP                        19d
  nginx        NodePort    10.99.236.10     <none>        80:30939/TCP                   17d
  web          NodePort    10.103.228.1     <none>        80:31224/TCP                   16m
  
  [root@k8s-master test]# kubectl get ep
  NAME             ENDPOINTS                                                   AGE
  fuseim.pri-ifs   <none>                                                      18d
  jenkins          10.244.36.79:8080,10.244.36.79:50000                        26h
  kubernetes       10.100.24.81:6443                                           19d
  nginx            10.244.169.131:80                                           17d
  web              10.244.107.216:8080,10.244.169.136:8080,10.244.36.81:8080   16m
  
  

• 验证ingress是否创建

  [root@k8s-master test]# kubectl get ingress
  Warning: extensions/v1beta1 Ingress is deprecated in v1.14+, unavailable in v1.22+; use networking.k8s.io/v1 Ingress
  NAME      CLASS    HOSTS               ADDRESS   PORTS   AGE
  jenkins   <none>   jenkins.scajy.org             80      26h
  web       <none>   java.scajy.org                80      17m
  

3.4 浏览器访问测试

• 绑定ingress的域名hosts
  
  

• 浏览器访问java.scajy.org域名测试