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Golang 实现 CICD

所有有关harbor的操作 请确保harbor已经创建相关的项目

0、Go测试代码

package main

import (
	"fmt"
	"github.com/kataras/iris/v12"
	"github.com/kataras/iris/v12/middleware/logger"
	"github.com/kataras/iris/v12/middleware/recover"
)

func GoLoop() {
	for {
		fmt.Println("hello")
	}
}

func main() {
	app := iris.New()
	app.Use(recover.New())
	app.Use(logger.New())
	go GoLoop()
	//输出html
	// 请求方式: GET
	// 访问地址: http://localhost:8080/welcome
	app.Handle("GET", "/welcome", func(ctx iris.Context) {
		ctx.HTML("<h1>Welcome</h1>")
	})
	//输出字符串
	// 类似于 app.Handle("GET", "/ping", [...])
	// 请求方式: GET
	// 请求地址: http://localhost:8080/ping
	app.Get("/ping", func(ctx iris.Context) {
		ctx.WriteString("pong")
	})
	//输出json
	// 请求方式: GET
	// 请求地址: http://localhost:8080/hello
	app.Get("/hello", func(ctx iris.Context) {
		ctx.JSON(iris.Map{"message": "Hello Iris!"})
	})
	app.Run(iris.Addr(":8081"))//8080 监听端口
}

1、Go服务构建

我们需要通过自定义镜像底包,能够让该底包拥有启动go程序的基本功能和日志重定向输出到指定目录下,方便日志收集,编辑完相关文件后,我们需要通过docker命令去构建镜像,构建完毕后将其推送到harbor base仓库,该名为base的仓库需要手动去harbor上创建。

1.1、制作Go服务镜像底包

创建一个目录 在该目录下执行下面操作

1.1.1、编写Dockerfile以及相关的启动脚本

cp /etc/yum.repos.d/CentOS-Base.repo 到当前目录下

  • Dcokerfile
FROM alpine
USER root
RUN apk add tzdata && /bin/cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime &&\
    echo 'Asia/Shanghai' >/etc/timezone &&\
    mkdir /opt/logs 
WORKDIR /opt/project_dir/

1.1.2、构建镜像并上传到harbor仓库

$ docker build ./ -t harbor地址/base/go-run:1.14.2-1
Sending build context to Docker daemon  3.072kB
Step 1/6 : FROM alpine
 ---> a187dde48cd2
Step 2/6 : USER root
 ---> Using cache
 ---> f0673624a0e0
Step 3/6 : RUN apk add tzdata && /bin/cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime &&    echo 'Asia/Shanghai' >/etc/timezone &&    mkdir /opt/logs
 ---> Using cache
 ---> e91f2e8a4919
Step 4/6 : WORKDIR /opt/project_dir/
 ---> Using cache
 ---> 6afa8e9ddd43
Step 5/6 : ADD entrypoint.sh /entrypoint.sh
 ---> Using cache
 ---> 7a7efe533a5f
Step 6/6 : CMD ["/entrypoint.sh"]
 ---> Using cache
 ---> 17d85fd60af3
Successfully built 17d85fd60af3
Successfully tagged harbor.od.com/base/go-run:1.14.2-1

$ docker push harbor地址/base/go-run:1.14.2-1
The push refers to repository [harbor.od.com/base/go-run]
20c042b1ca31: Mounted from base/go-test 
98e20bd596b3: Mounted from base/go-test 
f4ee0579d5d8: Mounted from base/go-test 
beee9f30bc1f: Mounted from base/go-test 
1.14.2-1: digest: sha256:49dda47c11a3148fdfd60fe4850ada128e6550fb33c1a6284caadf0e6ea8016d size: 1153

1.2、制作slave基础镜像底包

我们是基于jenkins slave方式去构建项目,并且使用pipeline来实现流程化,我们都知道slave运行的是一个pod,那么pod里可以有多个容器,而这些一个一个的容器就是执行我们对应操作的环境,所以我们需要通过制作一些镜像来满足我们的需求。

创建一个目录 在该目录下执行下面操作

1.2.1、Golang镜像

该镜像主要用于构建golang应用,我们是在基于golang v1.14.2环境下开发的golang程序,所以这里镜像版本就选择:golang:v1.14.2

docker pull golang:v1.14.12-stretch
docker images 查看刚刚pull下来的 image id
docker tag imageid harbor地址/public/golang:v1.14.12-stretch
docker push harbor地址/public/golang:v1.14.12-stretch

1.2.2、Docker镜像

该镜像主要用于将编译好的golang项目打包成镜像并推送到harbor,但需要定制化一下镜像,需要将一台已经实现docker login 登录到harbor仓库所生成的配置文件,路径为:/root/.docker/config.json,与原始Docker镜像一起打包生成新的Docker镜像并推送到本地仓库。

1.docker登录私有镜像仓库

在 /etc/docker/daemon.json 里写入 私有仓库地址

{
  "insecure-registries": ["harbor地址"]
}

登录 默认账号 admin 密码 Harbor12345

docker login -u admin -p Harbor12345 harbor地址

2.准备镜像文件

docker pull docker:19.03
docker tag e036013d6d10 harbor地址/public/docker:v19.03
docker push harbor地址/public/docker:v19.03

3.准备Dockerfile和config.json

  • Dockerfile
FROM harbor地址/public/docker:v19.03
USER root
ADD config.json /root/.docker/config.json

4.将/root/.docker/config.json文件拷贝到Dockerfile目录下

{
	"auths": {
		"harbor.od.com": {
			"auth": "YWRtaW46SGFyYm9yMTIzNDU="
		}
	},
	"HttpHeaders": {
		"User-Agent": "Docker-Client/19.03.6 (linux)"
	}
}

5.制作并推送镜像

$ docker build ./ -t harbor地址/public/docker:v19.03
$ docker push  harbor地址/public/docker:v19.0

2、Jenkins流水线

2.1、创建流水线

1.添加参数化构建

- Choice Parameterr:app_project
  Value:jenkins-test
  Describe:项目名必须和git仓库名一致

- Choice Parameterr:image_name
  Value:app/go-test
  Describe:镜像名称:仓库名/镜像名

- String Parameterr:git_ver
  Value:master
  Describe:Git仓库分支或Commit ID

- String Parameterr:add_tag
  Value:
  Describe:打包镜像tag,一般为日期时间

- Choice Parameterr:git_repo
  Value:https://gitee.com/zzxaaas/jenkins-test.git
  Describe:代码仓库地址

- Choice Parameterr:base_image
  Value:base/go-run:1.14.2-1
  Describe:基础镜像底包

2.pipeline代码

podTemplate(cloud:'kubernetes',containers: [
    containerTemplate(
       name: 'go-build', 
       envVars: [
         envVar(key: 'GO111MODULE', value: 'on'), 
         envVar(key: 'GOPROXY', value: 'https://goproxy.io'),
         envVar(key: 'CGO_ENABLED', value: '0'),
         envVar(key: 'GOOS', value: 'linux')
       ],
       image: 'harbor.zzx/public/golang:v1.14.12-stretch', 
       ttyEnabled: true,
       command: 'cat'),
    containerTemplate(
       name: 'docker',
      ttyEnabled: true,
      image: 'harbor.zzx/public/docker:v19.03'),
    ],
    volumes: [
       nfsVolume(mountPath: '/go/pkg/mod', readOnly: false, serverAddress: 'nfs.server', serverPath: '/data/k8s/go-pkg/'),
       hostPathVolume(hostPath: '/run/docker.sock', mountPath: '/run/docker.sock')
            ]
 ){
    node(POD_LABEL) {
        stage('Get a Go project') {
        // 从git仓库拉取代码
        checkout([$class: 'GitSCM', branches: [[name: "${params.git_ver}"]], browser: [$class: 'GitLab', repoUrl: ''], doGenerateSubmoduleConfigurations: false, extensions: [], submoduleCfg: [], userRemoteConfigs: [[credentialsId: 'git', name: 'git', refspec: 'refs/changes/*:refs/changes/*', url: "${params.git_repo}"]]])

            container('go-build') {
                stage('Build a go project') {
                  // 将go应用构建名为app的可执行二进制文件
                  sh "go build -o app"
                }
            }
        }
        stage('Docker build') {
            container('docker') {
                stage('create dir'){
                  sh "mkdir -p /tmp/${params.app_project}/project_dir && mv ./app /tmp/${params.app_project}/project_dir"
                stage('build docker iamge'){
                 sh """
                   echo "FROM harbor.zzx/${params.base_image}" >/tmp/${params.app_project}/Dockerfile
                   echo "ADD ./project_dir /opt/project_dir" >>/tmp/${params.app_project}/Dockerfile
                  """
                  sh "docker login -u admin -p Harbor12345 harbor.zzx"
                  sh "cd /tmp/${params.app_project}/ && pwd && docker build ./ -t harbor.zzx/${params.image_name}:${params.git_ver}_${params.add_tag} && docker push harbor.zzx/${params.image_name}:${params.git_ver}_${params.add_tag} "                              

                 }
              }
            }
        }
    }
}

3、golang资源配置清单

创建一个目录,在该目录下执行下面操作

3.1、准备资源配置清单

准备3个yaml文件 deployment.yaml svc.yaml ingress.yaml

1.deployment

kind: Deployment
apiVersion: apps/v1
metadata:
  name: go-test
  namespace: app
  labels: 
    name: go-test
spec:
  replicas: 1
  selector:
    matchLabels: 
      name: go-test
  template:
    metadata:
      labels: 
        app: go-test
        name: go-test
    spec:
      containers:
      - name: go-test
        command: [ "/bin/sh", "-c", "--" ]
        args: [ "/opt/project_dir/app;while true; do sleep 30; done;" ]
        image: harbor.zzx/app/go-test:master_20210106_1143
        ports:
        - containerPort: 80
          protocol: TCP
        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

2.svc

kind: Service
apiVersion: v1
metadata: 
  name: go-test
  namespace: app
spec:
  type: NodePort
  ports:
  - protocol: TCP
    port: 8081
    targetPort: 8081
    nodePort: 30088 #外部访问端口
  selector: 
    name: go-test

3.ingress

kind: Ingress
apiVersion: extensions/v1beta1
metadata: 
  name: go-test
  namespace: app
spec:
  rules:
  - host: gotest.com
    http:
      paths:
      - path: /
        backend: 
          serviceName: go-test
          servicePort: 80

3.2、应用资源配置清单

kubectl create namespace app
kubectl apply -f ./

修改某个yaml文件后 单独 kubectl apply -f yaml文件名

查看pod运行状态

$ kubectl get pods -n app
NAME                         READY   STATUS    RESTARTS   AGE
go-test-55474c768d-x8qj5   1/1     Running   0          2m10s

3.3、浏览器访问golang业务

1.浏览器访问 k8s结点ip:30088/welcome

1610003646892

4、k8s 其他命令

查看pod信息

kubectl describe pod go-test-55474c768d-x8qj5 -n app

删除yaml

kubectl delete -f yaml文件名

创建yaml

kubectl create-f yaml文件名

查看pod日志

kubectl logs go-test-55474c768d-x8qj5 -n app

5、docker命令

查看镜像

docker images

查看 当前正在运行的容器

docker ps -a : 全部

进入容器(先通过 docker ps 获取容器id)

docker exec -it 容器id sh

删除镜像

docker rmi 镜像id -f : 强制删除

删除容器

docker rm 容器id

posted @ 2021-02-06 18:15  zzxaaas  阅读(563)  评论(0编辑  收藏  举报