Microservices Engine:Jenkins CI/CD パイプラインによるエンドツーエンドカナリアリリースの実装

apiVersion: apps/v1
kind: Deployment
metadata:
  name: spring-cloud-zuul
spec:
  replicas: 1
  selector:
    matchLabels:
      app: spring-cloud-zuul
  template:
    metadata:
      labels:
        app: spring-cloud-zuul
        msePilotCreateAppName: spring-cloud-zuul
    spec:
      containers:
        - name: spring-cloud-zuul
          image: registry.cn-shanghai.aliyuncs.com/yizhan/spring-cloud-zuul:1.0.1
          imagePullPolicy: Always
          ports:
            - containerPort: 20000

apiVersion: apps/v1
kind: Deployment
metadata:
  name: spring-cloud-a
spec:
  replicas: 2
  selector:
    matchLabels:
      app: spring-cloud-a
  template:
    metadata:
      labels:
        app: spring-cloud-a
        msePilotCreateAppName: spring-cloud-a
    spec:
      containers:
      - name: spring-cloud-a
        image: registry.cn-shanghai.aliyuncs.com/yizhan/spring-cloud-a:0.1-SNAPSHOT
        imagePullPolicy: Always
        ports:
        - containerPort: 20001
        livenessProbe:
          tcpSocket:
            port: 20001
          initialDelaySeconds: 10
          periodSeconds: 30

apiVersion: apps/v1
kind: Deployment
metadata:
  name: spring-cloud-b
spec:
  replicas: 2
  selector:
    matchLabels:
      app: spring-cloud-b
  strategy:
  template:
    metadata:
      labels:
        app: spring-cloud-b
        msePilotCreateAppName: spring-cloud-b
    spec:
      containers:
      - name: spring-cloud-b
        image: registry.cn-shanghai.aliyuncs.com/yizhan/spring-cloud-b:0.1-SNAPSHOT
        imagePullPolicy: Always
        ports:
        - containerPort: 8080
        livenessProbe:
          tcpSocket:
            port: 20002
          initialDelaySeconds: 10
          periodSeconds: 30

apiVersion: apps/v1
kind: Deployment
metadata:
  name: spring-cloud-c
spec:
  replicas: 1
  selector:
    matchLabels:
      app: spring-cloud-c
  template:
    metadata:
      labels:
        app: spring-cloud-c
        msePilotCreateAppName: spring-cloud-c
    spec:
      containers:
      - name: spring-cloud-c
        image: registry.cn-shanghai.aliyuncs.com/yizhan/spring-cloud-c:0.1-SNAPSHOT
        imagePullPolicy: Always
        ports:
        - containerPort: 20003
        livenessProbe:
          tcpSocket:
            port: 20003
          initialDelaySeconds: 10
          periodSeconds: 30

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nacos-server
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nacos-server
  template:
    metadata:
      labels:
        app: nacos-server
    spec:
      containers:
      - env:
        - name: MODE
          value: standalone
        image: nacos/nacos-server:v2.2.0
        imagePullPolicy: Always
        name: nacos-server
      dnsPolicy: ClusterFirst
      restartPolicy: Always

# SLB service for the spring-cloud-zuul gateway
---
apiVersion: v1
kind: Service
metadata:
  annotations:
    service.beta.kubernetes.io/alibaba-cloud-loadbalancer-spec: slb.s1.small
  name: zuul-slb
spec:
  ports:
    - port: 80
      protocol: TCP
      targetPort: 20000
  selector:
    app: spring-cloud-zuul
  type: LoadBalancer

#!groovy
pipeline {

    // ビルドエージェントのラベル
    agent{
        node{
          label 'slave-pipeline'
        }
    }

    // パラメーターから組み立てられたイメージレジストリのパス
    environment{
        IMAGE = sh(returnStdout: true,script: 'echo registry.$image_region.aliyuncs.com/$image_namespace/$image_reponame:$image_tag').trim()
        BRANCH =  sh(returnStdout: true,script: 'echo $branch').trim()
    }
    options {
        // 最大10件のビルドを保持
        buildDiscarder(logRotator(numToKeepStr: '10'))
    }

    parameters {
        string(name: 'image_region', defaultValue: 'cn-shanghai')
        string(name: 'image_namespace', defaultValue: 'yizhan')
        string(name: 'image_reponame', defaultValue: 'spring-cloud-a')
        string(name: 'image_tag', defaultValue: 'gray')
        string(name: 'branch', defaultValue: 'master')
        string(name: 'number_of_pods', defaultValue: '2')
    }

    stages {

        stage('Code packaging') {
            steps{
                container("maven") {
                    echo "Image building......"
                    sh "cd A && mvn clean package"
                }

            }
        }


        stage('Image building and releasing'){
          steps{
              container("kaniko") {
                  sh "kaniko -f `pwd`/A/Dockerfile -c `pwd`/A --destination=${IMAGE} --skip-tls-verify"
              }
          }
        }



        stage('Canary deployment') {
            steps{
                container('kubectl') {
                    echo "Canary deployment......"
                    sh "cd A && sed -i -E \"s/${env.image_reponame}:.+/${env.image_reponame}:${env.image_tag}/\" A-gray-deployment.yaml"
                    sh "cd A && sed -i -E \"s/replicas:.+/replicas: ${env.number_of_pods}/\" A-gray-deployment.yaml"
                    sh "kubectl apply -f A/A-gray-deployment.yaml -n default"
                }
            }
        }

        stage('Completing canary deployment') {
            input {
                message "Are you sure that you want to enable a full release"
                ok "OK"
                parameters {
                    string(name: 'continue', defaultValue: 'true', description: 'true indicates a full release, and false indicates a rollback')
                }
            }
            steps{
                script {
                    env.continue = sh (script: 'echo ${continue}', returnStdout: true).trim()
                    if (env.continue.equals('true')) {
                        container('kubectl') {
                            echo "Full releasing......"
                            sh "cd A && sed -i -E \"s/${env.image_reponame}:.+/${env.image_reponame}:${env.image_tag}/\" A-deployment.yaml"
                            sh "cd A && sed -i -E \"s/replicas:.+/replicas: ${env.number_of_pods}/\" A-deployment.yaml"
                            sh "kubectl apply -f A/A-deployment.yaml -n default"
                        }
                    } else {
                        echo 'Rolling back'
                    }
                    container('kubectl') {
                        sh "kubectl delete -f A/A-gray-deployment.yaml -n default"
                    }
                }
            }
        }
    }
}