K8S+Jenkins自动化构建微服务项目

因为之前写过基于K8S部署jenkins master/slave平台，在这个的基础上构建微服务到K8S集群中

Jenkins-slave构建微服务项目到K8S集群

1、微服务项目上传到git仓库

　　这个就不多说了

2、更改注册中心eureka的配置文件

进入到项目代码中，更改微服务中eureka-service的配置文件application.yaml（需要和开发对一下，具体还要加哪些参数）

server:   port: 8761 spring:    application:      name: eureka-service    eureka:   instance:     prefer-ip-address: false   client:     region: default     service-url:       defaultZone: http://eureka-0.eureka.default:${server.port}/eureka/,http://eureka-1.eureka.default:${server.port}/eureka/     register-with-eureka: true     fetch-registry: true

其他应用程序往eureka注册，需要在各自的application.yaml里添加下面的eureka信息

eureka:   instance:     prefer-ip-address: false   client:     region: default     service-url:       defaultZone: http://eureka-0.eureka:8761/eureka/,http://eureka-1.eureka:8761/eureka/     register-with-eureka: true     fetch-registry: true

3、创建statefulset资源文件部署eureka，ingress做负载均衡

（将所以要创建的资源都合并到一个yaml文件，上传到git仓库项目代码的eureka目录下）

#创建Service为headless apiVersion: v1 kind: Service metadata:   namespace: NS   labels:     app: eureka   name: eureka spec:   clusterIP: None   selector:     app: eureka   ports:   - port: 8761     protocol: TCP     targetPort: 8761 status:   loadBalancer: {}    --- #创建StatefulSet apiVersion: apps/v1 kind: StatefulSet metadata:   name: eureka   namespace: NS spec:   selector:     matchLabels:       app: eureka   serviceName: "eureka"   replicas: RSCOUNT   template:     metadata:       labels:         app: eureka     spec:       imagePullSecrets:       - name: SECRET_NAME       containers:       - name: eureka         image: IMAGE_NAME         ports:         - containerPort: 8761  --- #创建ingress apiVersion: networking.k8s.io/v1 kind: Ingress metadata:   name: eureka-ingress   annotations:     kubernetes.io/ingress.class: "nginx" spec:   rules:   - host: eureka.test.com     http:       paths:       - path: /         pathType: Prefix         backend:           service:             name: eureka             port:                number: 8761

4、在jenkins创建流水线任务

新建任务——eureka 流水线——然后进入项目配置，Jenkinsfile如下：

def registry = "10.48.14.50:8888" def project = "dev" def app_name = "eureka-service" def jar_path = "build/libs" def jar_name = "${app_name}-0.0.1-SNAPSHOT.jar" def jar_port = "8761" def image_name = "${registry}/${project}/${app_name}:${BUILD_NUMBER}" def git_address = "http://10.48.14.100:30080/001/xiangmu.git" // 认证 def secret_name = "registrypullauth" def docker_registry_auth = "b07ed5ba-e191-4688-9ed2-623f4753781c" def git_auth = "a5ec87ae-87a1-418e-aa49-53c4aedcd261" def k8s_auth = "3cd3f414-a0e2-4bc0-8808-78c64e6ad7d2" def JAVA_OPTS = "-Xms128m -Xmx256m -Dfile.encoding=UTF8 -Duser.timezone=GMT+08 -Dspring.profiles.active=test"  pipeline {   agent {     kubernetes {         label "jenkins-slave"         yaml """ kind: Pod metadata:   name: jenkins-slave spec:   containers:   - name: jnlp     image: "${registry}/library/jenkins-slave-jdk:latest"     imagePullPolicy: Always     env:        - name: TZ         value: Asia/Shanghai     volumeMounts:       - name: docker-cmd         mountPath: /usr/bin/docker       - name: docker-sock         mountPath: /var/run/docker.sock       - name: gradle-cache         mountPath: /root/.gradle   volumes:     - name: docker-cmd       hostPath:         path: /usr/bin/docker     - name: docker-sock       hostPath:         path: /var/run/docker.sock     - name: gradle-cache       hostPath:          path: /tmp/gradle """         }       }     parameters {         choice (choices: ['1', '2', '3', '5', '7'], description: '副本数', name: 'ReplicaCount')         choice (choices: ['dev','test','prod','default'], description: '命名空间', name: 'Namespace')     }     stages {         stage('拉取代码'){             steps {                 checkout([$class: 'GitSCM',                  branches: [[name: "${params.Branch}"]],                  doGenerateSubmoduleConfigurations: false,                  extensions: [], submoduleCfg: [],                  userRemoteConfigs: [[credentialsId: "${git_auth}", url: "${git_address}"]]                 ])             }         }          stage('代码编译'){            steps {              sh """                 java -version                 pwd                	cd ${app_name}                	pwd 　　　　　　　　　　gradle -v 　　　　　　　　　　gradle clean build -x test                 """             }         }          stage('构建镜像'){            steps {                 withCredentials([usernamePassword(credentialsId: "${docker_registry_auth}", passwordVariable: 'password', usernameVariable: 'username')]) {                 sh """                   echo '                     FROM ${registry}/library/java:11                     MAINTAINER liang                     RUN apk add -U tzdata && \ 	                ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime                     ADD ${jar_path}/${jar_name} /                     EXPOSE ${jar_port}                     CMD java -jar $JAVA_OPTS  /${jar_name}                     '> ${app_name}/Dockerfile                   docker build -t ${image_name} ${app_name}                   docker login -u ${username} -p ${password} ${registry}                   docker push ${image_name}                 """                 }            }          }                  stage('部署到K8S平台'){           steps {             configFileProvider([configFile(fileId: "${k8s_auth}", targetLocation: 'admin.kubeconfig')]) {               sh """                 pwd                 sed -i 's#IMAGE_NAME#${image_name}#' ${app_name}/deploy.yaml                 sed -i 's#SECRET_NAME#${secret_name}#' ${app_name}/deploy.yaml                 sed -i 's#RSCOUNT#${ReplicaCount}#' ${app_name}/deploy.yaml                 sed -i 's#NS#${Namespace}#' ${app_name}/deploy.yaml                 kubectl apply -f ${app_name}/deploy.yaml -n ${Namespace} --kubeconfig=admin.kubeconfig                 sleep 10                 kubectl get pod -n ${Namespace} --kubeconfig=admin.kubeconfig               """            }           }         }     } }

构建项目：可以选择启动的副本数、项目代码分支、k8s命名空间（dev、test、prod：代表开发、测试、生产环境）

K8S+Jenkins自动化构建微服务项目

查看构建日志：

K8S+Jenkins自动化构建微服务项目

浏览器访问eureka： 　　需要添加dns记录或者host文件(根据自己的实际情况添加)    http://eureka.test.com

5、构建其他应用程序部署到K8S

修改微服务网关gateway的配置文件application.yaml：

server:   port: 8130 spring:    application:      name: gateway-service  eureka:   instance:     prefer-ip-address: false   client:     region: default     service-url:       defaultZone: http://eureka-0.eureka:8761/eureka/,http://eureka-1.eureka:8761/eureka/     register-with-eureka: true     fetch-registry: true

创建deploy资源部署gateway，ingress做负载均衡

apiVersion: v1 kind: Service metadata:   namespace: NS   labels:     app: gateway   name: gateway spec:   selector:     app: gateway   ports:   - port: 8130     protocol: TCP     targetPort: 8130 status:   loadBalancer: {} --- #创建Deployment apiVersion: apps/v1 kind: Deployment metadata:   name: gateway   namespace: NS spec:   selector:      matchLabels:       app: gateway   replicas: RSCOUNT   template:     metadata:       labels:         app: gateway     spec:       imagePullSecrets:       - name: SECRET_NAME       containers:       - name: gateway         image: IMAGE_NAME         ports:         - containerPort: 8130 --- #创建ingress apiVersion: networking.k8s.io/v1 kind: Ingress metadata:   name: gateway-ingress   annotations:     kubernetes.io/ingress.class: "nginx" spec:   rules:   - host: gateway.test.com     http:       paths:       - path: /         pathType: Prefix         backend:           service:             name: gateway             port:                number: 8130

jenkins中创建gateway项目，使用eureka的Jenkinsfile，只需要修改其中的变量就可以了，这里就不写了

......

应用程序构建完成后，查看是否注册到eureka：

K8S+Jenkins自动化构建微服务项目

再查看eureka日志，说明成功了

K8S+Jenkins自动化构建微服务项目

大概就是这样，部署微服务的其他应用程序也是一样。

需要注意的是：项目中application.yaml的参数要问开发人员（有些程序需要连数据库）

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K8S+Jenkins自动化构建微服务项目

Jenkins-slave构建微服务项目到K8S集群

1、微服务项目上传到git仓库

2、更改注册中心eureka的配置文件

3、创建statefulset资源文件部署eureka，ingress做负载均衡

4、在jenkins创建流水线任务

5、构建其他应用程序部署到K8S

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78 2025-04

90 2025-03