11.实战交付一套dubbo微服务到k8s集群(4)之使用Jenkins进行持续构建交付dubo服务的提供者

1.登录到jenkins，新建一个项目

2.新建流水线

3.设置保留的天数及份数

4. 添加参数

# 参数
1.  name: git_repo
    type: string
    description: 项目在git版本仓库的地址，如 https://gitee.com/xxx/dubbo-demo-service.git

2.  name: app_name
    type: string
    description: 项目名称，如 dubbo-demo-service  

3.  name: git_ver
    type: string
    description: 项目在git仓库中对应的分支或者版本号

4.  name: maven
    type: choice
    description: 编译时使用的maven目录中的版本号部分

5.  name: mvn_cmd
    type: string
    default: mvn clean package -Dmaven.test.skip=true
    description: 执行编译所用的指令
    
6.  name: mvn_dir
    type: string
    default: ./
    description: 在哪个目录执行编译，由开发同事提供

7.  name: target_dir
    type: string
    default: ./target
    description: 编译的jar/war文件存放目录，由开发同事提供

8.  name: base_image
    type: choice
    default:
    description: 项目使用的jre底包
    
9.  name: image_name
    type: string
    description: docker镜像名称，如 app/dubbo-demo-service 

10. name: add_tag
    type: string
    default:
    description: 日期-时间，和git_ver拼在一起组成镜像的tag，如: 202002011001

5.设置流水线构建脚本

pipeline {
  agent any 
    stages {
      stage('pull') { //get project code from repo 
        steps {
          sh "git clone ${params.git_repo} ${params.app_name}/${env.BUILD_NUMBER} && cd ${params.app_name}/${env.BUILD_NUMBER} && git checkout ${params.git_ver}"
        }
      }
      stage('build') { //exec mvn cmd
        steps {
          sh "cd ${params.app_name}/${env.BUILD_NUMBER}  && /var/jenkins_home/maven-${params.maven}/bin/${params.mvn_cmd}"
        }
      }
      stage('package') { //move jar file into project_dir
        steps {
          sh "cd ${params.app_name}/${env.BUILD_NUMBER} && cd ${params.target_dir} && mkdir project_dir && mv *.jar ./project_dir"
        }
      }
      stage('image') { //build image and push to registry
        steps {
          writeFile file: "${params.app_name}/${env.BUILD_NUMBER}/Dockerfile", text: """FROM harbor.fx.com/${params.base_image}
ADD ${params.target_dir}/project_dir /opt/project_dir"""
          sh "cd  ${params.app_name}/${env.BUILD_NUMBER} && docker build -t harbor.fx.com/${params.image_name}:${params.git_ver}_${params.add_tag} . && docker push harbor.fx.com/${params.image_name}:${params.git_ver}_${params.add_tag}"
        }
      }
    }
}

6.保存配置

7.私有仓库创建一个名称为app的项目，属性为私有

8.执行流水线

9.输入相关参数

10.构建成功

11.查看私有仓库的app项目是否已经有docker镜像并打开 Blue Ocean可以查看到构建的步骤

12. 准备dubbo-demo-service的k8s资源配置清单文件

[root@hdss7-200 dubbo-demo-service]# vim deployment.yaml 
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  name: dubbo-demo-service
  namespace: app
  labels: 
    name: dubbo-demo-service
spec:
  replicas: 1
  selector:
    matchLabels: 
      name: dubbo-demo-service
  template:
    metadata:
      labels: 
        app: dubbo-demo-service
        name: dubbo-demo-service
    spec:
      containers:
      - name: dubbo-demo-service
        image: harbor.fx.com/app/dubbo-demo-service:master_20200617_1849
        ports:
        - containerPort: 20880
          protocol: TCP
        env:
        - name: JAR_BALL
          value: dubbo-server.jar
        imagePullPolicy: IfNotPresent
      imagePullSecrets:
      - name: harbor
      restartPolicy: Always
      terminationGracePeriodSeconds: 30
      securityContext: 
        runAsUser: 0
      schedulerName: default-scheduler
  strategy:
    type: RollingUpdate
    rollingUpdate: 
      maxUnavailable: 1
      maxSurge: 1
  revisionHistoryLimit: 7
  progressDeadlineSeconds: 600

13.查看zookeeper的状态

[root@hdss7-11 bin]# ./zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost.
Mode: follower

[root@hdss7-11 bin]# ./zkCli.sh -server localhost:2181
[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper]
[zk: localhost:2181(CONNECTED) 1]

14.应用dubbo-demo-service的k8s的资源配置清单

[root@hdss7-21 ~]# kubectl create namespace app
[root@hdss7-21 ~]# kubectl create secret docker-registry harbor --docker-server=harbor.fx.com --docker-username=admin --docker-password=Harbor12345 -n app
[root@hdss7-21 ~]# kubectl apply -f http://k8s-yaml.fx.com/dubbo-demo-service/deployment.yaml

15.再次查看zookeeper

[zk: localhost:2181(CONNECTED) 0] ls /
[dubbo, zookeeper]
[zk: localhost:2181(CONNECTED) 1]