Jenkins plugin 的用法和示例

今天介绍一下比较常见的Jenkins plugin 的使用方法

1. 通过AWS s3 upload 插件上传文件到AWS S3 存储桶

前提条件：

安装AWS pipeline step插件
在Jenkins 中创建credentials，包含access_key_id和secret_key_id
创建S3 存储桶

脚本：

复制代码

pipeline{
    agent { label 'master' } 

    stages{
        stage("Aws test credentials"){
            steps{
                withAWS(credentials: 'jenkins-test', region: 'ap-southeast-2'){
                    sh 'echo "Hello DevOps" > hello.txt'
                    s3Upload (acl: 'Private' , bucket: 'jenkins-s3-upload-test01' , file: 'hello.txt')
                    s3Download(file:'downloaded.txt', bucket:'jenkins-s3-upload-test01', path:'hello.txt',force:true) 
                    sh "cat downloaded.txt"

                }
            }
        }
    }
}

效果：

2. 在Jenkins pipeline 中assume AWS role

前提条件：

创建IAM role 并设置trust relationship

{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "Statement1",
"Effect": "Allow",
"Principal": {
"AWS": "arn:aws:iam::654654314383:user/jenkins-test"
},
"Action": [
"sts:AssumeRole"
]
}
]
}
确保您assume 的 IAM 角色具有在管道内执行 AWS CLI 命令所需的权限。

脚本：

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pipeline {
    agent {label 'master'}
    environment {
        PATH = "/opt/homebrew/bin:$PATH"
    }

    stages {
        stage('Assume Role') {
            steps {
                withAWS(credentials: 'jenkins-test', , region: 'ap-southeast-2') {
                    withAWS(role: 'arn:aws:iam::654654314383:role/jenkins-assumerole', region: 'ap-southeast-2') {
                        sh 'aws --version'
                        sh 'aws s3 ls s3://jenkins-s3-upload-test01'  // Example S3 CLI command
                    }
                }
            }
        }
    }
}

验证：

3. 通过Email ext 插件发送邮件通知

前提条件：

安装Email ext plugin
在Jenkins 上配置SMTP 邮件服务器，并保证可以测试成功

脚本：

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pipeline{
    agent { label 'master' } 
    
stages {

stage('Gmail')
{
	steps
	{
		emailext body: "*${currentBuild.currentResult}:* Job Name: ${env.JOB_NAME} || Build Number: ${env.BUILD_NUMBER}\nMore information at: ${env.BUILD_URL}",
		subject: 'Declarative Pipeline Build Status',
		to: 'rockwang415@gmail.com'
	}
  }
 }
}

验证：

4. Docker plugin for Jenkins

许多组织使用 Docker 来统一跨机器的构建和测试环境，并提供高效的应用程序部署机制。从 Pipeline 2.5 及更高版本开始，Pipeline 内置了在 Jenkinsfile 中与 Docker 交互的支持。

前提条件：

安装docker plugin

在salve 节点上安装docker

pipeline {
agent any
stages {
stage('Build') {
steps {
script {
// Run in a Docker container
docker.image('gradle:8.2.0-jdk17-alpine').inside {
// Run the build command
sh 'gradle --version'
}
}
}
}
}
}

验证：

5. Kubernetes plugin for Jenkins

前提条件

安装kubernetes 插件
创建kubernetes secret file（kubeconfig）
添加kubernetes 节点到Jenkins cloud，并确保可以正常连接到kubernetes

创建 POD 和容器模板

脚本：

复制代码

podTemplate(containers: [
    containerTemplate(
        name: 'jnlp', 
        image: 'jenkins/inbound-agent:latest'
    )
]) {

    node('kubeagent') { // Replace POD_LABEL with 'kubeagent'
        stage('Get a Maven project') {
            container('jnlp') {
                stage('Shell Execution') {
                    sh '''
                    echo "Hello! I am executing shell"
                    '''
                }
            }
        }
    }
}

验证：

复制代码

Started by user admin
[Pipeline] Start of Pipeline (hide)
[Pipeline] podTemplate
[Pipeline] {
[Pipeline] node
Still waiting to schedule task
'pod-template-vc6lb' is offline
Agent pod-template-vc6lb is provisioned from template pod-template
---
apiVersion: "v1"
kind: "Pod"
metadata:
  annotations:
    kubernetes.jenkins.io/last-refresh: "1745298965608"
  labels:
    jenkins: "slave"
    jenkins/label-digest: "ffa3ba115a1a18165cef0867902fabef92179d38"
    jenkins/label: "kubeagent"
    kubernetes.jenkins.io/controller: "http___192_168_1_2_8080x"
  name: "pod-template-vc6lb"
  namespace: "default"
spec:
  containers:
  - env:
    - name: "JENKINS_SECRET"
      value: "********"
    - name: "REMOTING_OPTS"
      value: "-noReconnectAfter 1d"
    - name: "JENKINS_AGENT_NAME"
      value: "pod-template-vc6lb"
    - name: "JENKINS_NAME"
      value: "pod-template-vc6lb"
    - name: "JENKINS_AGENT_WORKDIR"
      value: "/home/jenkins/agent"
    - name: "JENKINS_URL"
      value: "http://192.168.1.2:8080/"
    image: "jenkins/inbound-agent:latest"
    imagePullPolicy: "Always"
    name: "jnlp"
    resources: {}
    tty: false
    volumeMounts:
    - mountPath: "/home/jenkins/agent"
      name: "workspace-volume"
      readOnly: false
    workingDir: "/home/jenkins/agent"
  hostNetwork: false
  nodeSelector:
    kubernetes.io/os: "linux"
  restartPolicy: "Never"
  volumes:
  - emptyDir:
      medium: ""
    name: "workspace-volume"

Running on pod-template-vc6lb in /home/jenkins/agent/workspace/kubernetes-2
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Get a Maven project)
[Pipeline] container
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Shell Execution)
[Pipeline] sh
+ echo Hello! I am executing shell
Hello! I am executing shell
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // container
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // node
[Pipeline] }
[Pipeline] // podTemplate
[Pipeline] End of Pipeline
Finished: SUCCESS

6. 多容器 Pod 模板

前提条件：

添加多个container template:

脚本：

复制代码

pipeline {
    agent none
    stages {
        stage('Deploy') {
            steps {
                podTemplate(label: 'kubeagent', containers: [
                    containerTemplate(name: 'jnlp', image: 'jenkins/inbound-agent:latest'),
                    containerTemplate(name: 'python',image: 'python:latest')
                ]) {
                    node('kubeagent') {
                        container('python') {
                            // Invoke commands or build steps here using kubeagent
                            sh 'echo "Running on kubeagent container python"'
                        }
                        container('jnlp') {
                            // Invoke commands or build steps here using kubeagent
                            sh 'echo "Running on kubeagent container jnlp"'
                        }
                    }
                }
            }
        }
    }
}

验证：