Jenkins安装与实践

安装Jenkins

安装Jenkins的同时我们部署一个“节点”（slave），后期我们将这个“节点”信息配置在Jenkins中，让Jenkins在进行CI时就在这个“节点”中进行。

场景1：单机docker-compose部署

docker-compose.yml文件

version: '3'
services:
  jenkins:
    restart: always
    image: jenkinsci/jenkins:2.147-alpine
    ports:
    - "8080:8080"
    volumes:
    - ./data/jenkins_home:/var/jenkins_home
  jenkins-slave:
    restart: always
    image: setzero/jenkins-slave:0.1.0
    depends_on:
    - jenkins
    volumes:
    - /var/run/docker.sock:/var/run/docker.sock

启动命令
```
docker-compose up -d
```

场景2：Kubernetes集群部署

deploy.yml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  labels:
    app: jenkins
  name: jenkins
spec:
  replicas: 1
  selector:
    matchLabels:
      app: jenkins
  template:
    metadata:
      labels:
        app: jenkins
    spec:
      containers:
      - image: jenkinsci/jenkins:2.147-alpine
        imagePullPolicy: IfNotPresent
        name: jenkins
        ports:
        - containerPort: 8080
          protocol: TCP
        resources:
          limits:
            memory: 3Gi
          requests:
            memory: 2Gi
        volumeMounts:
        - mountPath: /var/jenkins_home
          name: jenkins
      volumes:
      - emptyDir: {}
        name: jenkins
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: jenkins
  name: jenkins
spec:
  ports:
  - name: http
    port: 8080
    protocol: TCP
    targetPort: 8080
  selector:
    app: jenkins
  type: ClusterIP
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  labels:
    app: jenkins
  name: jenkins
spec:
  rules:
  - host: 1.2.3.4.nip.io
    http:
      paths:
      - backend:
          serviceName: jenkins
          servicePort: 8080
        path: /
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  labels:
    app: jenkins-slave
  name: jenkins-slave
spec:
  replicas: 1
  selector:
    matchLabels:
      app: jenkins-slave
  template:
    metadata:
      labels:
        app: jenkins-slave
    spec:
      containers:
      - image: setzero/jenkins-slave:0.1.0
        imagePullPolicy: IfNotPresent
        name: jenkins-slave
        ports:
        - containerPort: 22
          protocol: TCP
        resources:
          limits:
            memory: 2Gi
          requests:
            memory: 1Gi
        volumeMounts:
        - mountPath: /var/run/docker.sock
          name: docker-sock
      volumes:
      - hostPath:
          path: /var/run/docker.sock
        name: docker-sock
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: jenkins-slave
  name: jenkins-slave
spec:
  ports:
  - name: http
    port: 22
    protocol: TCP
    targetPort: 22
  selector:
    app: jenkins-slave
  type: ClusterIP

部署命令
```
kubectl apply -f deploy.yml -n jenkins
```

配置Jenkins

Jenkins启动后需要到容器中cat一下/var/jenkins_home/secrets/initialAdminPassword文件，查看初始密码。

首次启动界面

安装插件，选择默认的就好了

安装插件

配置“节点”
在安装Jenkins时我们同时部署了一个slave容器，我们将后面CI时会使用到的工具全部打包到此镜像中，这样做的目的就在于后期进行迁移或者重新搭建一套时环境是一致的。
通过菜单系统管理-->节点管理-->New Node

New Node

这里slave容器的root用户默认密码为root，也可使用ROOT_PASSWORD环境变量在启动slave容器时进行设置，关于Jenkins-slave镜像的更多信息请查看：https://github.com/TimeBye/jenkins-slave

查看连接状态

image.png

安装插件

Gitlab插件

实战

新建任务，选择流水线

流水线
填写Gitlab仓库地址

仓库信息
生成Secret Token，等会儿Gitlab WebHook配置时会用到它

Secret Token
编写CI要执行的语句

shell
在Gitlab中配置 WebHook

Gitlab
创建成功进行测试

测试
- Gitlab页面顶部出现测试结果
  
  结果
- 返回Jenkins就可以看到自动执行CI的记录了
  
  Jenkins CI

最后编辑于：2018.10.18 20:16:42