提交代码后，由kubernetes中的gitlab-runner，编译构建发布。光是想想就好鸡冻了，对不对。如果gitlab-runner 也直接在kubernetes 中，随着任务量的变动而自动伸缩，多美妙啊。

1. 部署gitlab runner

   # gitlab-runner chart的value文件，最重要是修改gitlabUrl， 与注册token。
   
   [root@ip-10-20-1-93 gitlab-runner]# grep -v '#' values.yaml  | grep -v '^$'
   imagePullPolicy: IfNotPresent
   gitlabUrl: http://gitlab.srv.sunvalley/
   runnerRegistrationToken: "3Pvqyxm3AJUURXkHW44K"
   unregisterRunners: true
   terminationGracePeriodSeconds: 3600
   concurrent: 10
   checkInterval: 30
   rbac:
     create: true
     clusterWideAccess: false
   metrics:
     enabled: true
   runners:
     image: ubuntu:16.04
     privileged: true
     pollTimeout: 180
     outputLimit: 4096
     cache: {}
     builds: {}
     services: {}
     helpers: {}
   securityContext:
     fsGroup: 65533
     runAsUser: 100
   resources: {}
   affinity: {}
   nodeSelector: {}
   tolerations: []
   hostAliases: []
   podAnnotations: {}
   podLabels: {}

2. 下一步在代码仓库中，配置k8s集群的信息。企业版可以对不同的环境配置做权限管控以及owner才有的发布控制，强烈推gitlab企业版。

   

3. 接下来就是让gitlab runner 跑起来印证咯。

   代码仓库中，创建.gitlab-ci.yml。

   #variables:
   #  MAVEN_CLI_OPTS: "-s .m2/settings.xml --batch-mode"
   #  MAVEN_OPTS: "-Dmaven.repo.local=.m2/repository"
   #  DOCKER_HOST: "http://10.20.0.108:2375"
     
   #build:
   #  stage: build
   #  image: harbor.sunvalley.com.cn/library/maven:3.0.5
   #  script: 
   #    - test CI_COMMIT_REF_NAME == "master" && IMAGE_VERSION="latest" || IMAGE_VERSION=$CI_COMMIT_REF_NAME
   #    - mvn $MAVEN_CLI_OPTS clean package docker:build -DpushImage -Dmaven.test.skip=true -Dimage.version=${IMAGE_VERSION}
   #  cache:
   #    paths:
   #      - .m2/repository/
   #  artifacts: 
   #    paths:
   #      - target/*.jar
   #    expire_in: 2 week 
   #  environment:
   #    name: test
   #  only:
   #    - tags
   
   test:
     stage: test
     script: echo "skipping test"
     only:
       - tags
   
   deploy:
     stage: deploy
     image: harbor.sunvalley.com.cn/library/kubectl-tools:1.16.3
     environment:
       name: test
       url: https://kube-dashboard.sunvalley.com.cn #内网开发注册中心
     when: manual
     only:
       - tags # tag分支 commit 之后触发
     script: 
       - echo "deploy to test"
       - kubectl version
       - cd manifests/
       - sed -i "s/__CI_PROJECT_NAME__/${CI_PROJECT_NAME}/" *.yaml
       - sed -i "s/__CI_ENVIRONMENT_SLUG__/${CI_ENVIRONMENT_SLUG}/" *.yaml
       - sed -i "s/__VERSION__/${CI_COMMIT_REF_NAME}/" *.yaml
       - |
         if kubectl apply -f deployment.yaml | grep -q unchanged; then
             echo "=> Patching deployment to force image update."
             kubectl patch -f deployment.yaml -p "{\"spec\":{\"template\":{\"metadata\":{\"annotations\":{\"ci-last-updated\":\"$(date +'%s')\"}}}}}"
         else
             echo "=> Deployment apply has changed the object, no need to force image update."
         fi
   #    - kubectl rollout status -f deployment.yaml
       - kubectl get all,ing -l env=${CI_ENVIRONMENT_SLUG}