使用 Jenkins 作业将 Helm 图表部署到 Kubernetes

我想创建一个 Jenkins 作业，将 Helm Chart 部署到 Kubernetes 集群中。 Helm 图表存储在 Bitbucket 存储库中。

    pipeline {
        agent any
        stages {
            stage('Download Helm Charts') {
                steps {
                    sh "echo 'Downloading Helm Charts from Bitbucket repository...'"
                    git checkout http://192.168.1.30:7990/scm/jen/helm.git
                    // not sure do I need ot point the root folder of the Helm repository or only the single chart
                }
            }
            stage('Test Kubernetes version') {
                steps {
                    sh "echo 'Checking Kubernetes version..'"
                    // How to do remote test of kubernetes version
                }
            }
            stage('Push Helm Charts to Kubernetes') {
                steps {
                    sh "echo 'building..'"
                    // push here helm chart from Jenkins server to Kubernetes cluster
                }
            }     
            stage('Build Image') {
                steps {
                    sh "echo 'building..'"
                    git checkout http://192.168.1.30:7990/scm/jen/spring-boot-microservice.git
                    // execute Java -jar ... and build docker image
                }
            }
            stage('Push Image into Nexus registry') {
                steps {
                    sh "echo 'building..'"
                    // push compiled docker image into Nexus repository
                }
            }
            stage('Deploy Image from Nexus registry into Kubernetes') {
                steps {
                    sh "echo 'building..'"
                }
            }
            stage('Test'){
                steps {
                    sh "echo 'Testing...'"
                    // implement a check here is it deployed sucessfully
                }
            }
        }
    }

我需要在这个 Jenkins 文件中添加什么配置才能从 bitbucket 下载 Heml 图表存储库并将配置应用到 Kubernetes 集群中？ 你能给我一个这样的 Jenkins 文件的例子吗？

假设您的 Pipeline 已位于 Helm 图表所在的 Bitbucket 存储库中。以下是存储库的示例结构。

jenkins
├── app1-charts
│   ├── Chart.yaml
│   ├── templates
│   │   ├── app1.yml
│   │   └── _helpers.tpl
│   └── values.yaml
└── Jenkinsfile

The Jenkinsfile在根目录中会有一个简单的管道，如下所示。

pipeline {
    agent any
    stages {
        stage('Build1') {
            steps { 
                echo "Doing some build here if you need"
            }
        }
        
        stage('Applying helm charts') {
            steps {
                echo "Running Helm"
                sh "helm upgrade --wait --timeout 60 --set image.tag=${SOME_INPUT} app1-name ./app1-charts"
            }
        }
    }
}

上述管道假设您在 Jenkins 代理中设置了 Helm。现在在 Jenkins 中，您可以创建一个新的管道作业并选择该选项Pipeline Script from SCM，然后提供 Bitbucket 配置。

确保Script Path设置为指向您的Jenkinsfile。另外，请确保Lightweight checkout未选中。

添加配置后，这将克隆带有 Helm 图表的存储库，并在存储库中运行管道，该管道将执行 Helm 图表。

更新：检查 bitbucket 存储库的管道

检查以下管道示例。如果存储库是私有的，您可能必须生成具有必要权限的访问令牌才能签出存储库。

pipeline {
    agent any

    stages {
        stage('checkout') {
            steps {
                echo 'Checking out code from bitbucket'
                git(url: 'https://x-token-auth:[email protected] /cdn-cgi/l/email-protection/ORG_NAME/your-repo.git', branch: 'master')
                sh """
                cd your-helm-directory
                helm install .............. Or whatever command you need
                """
            }
        }
    }
}

Update

pipeline {
    agent any
    stages {
        stage('Download Helm Charts') {
            steps {
                sh "echo 'Downloading Helm Charts from Bitbucket repository...'"
                git(url: 'http://192.168.1.30:7990/scm/jen/helm.git', branch: 'master')
                
            }
        }
        stage('Test Kubernetes version') {
            steps {
                sh "echo 'Checking Kubernetes version..'"
                sh'''
                  kubectl version -o json // After getting the verson do whatever validations. 
                '''
            }
        }
        stage('Push Helm Charts to Kubernetes') {
            steps {
                sh "echo 'building..'"
                sh """
                  cd your-helm-directory
                  helm install .............. Or whatever command you need
                """
            }
        }     
        stage('Build Image') {
            steps {
                sh "echo 'building..'"
                git checkout http://192.168.1.30:7990/scm/jen/spring-boot-microservice.git
                // execute Java -jar ... and build docker image
                sh'''
                 git clone http://192.168.1.30:7990/scm/jen/spring-boot-microservice.git
                  cd TO_JAR_LOCATION 
                  Java -jar some.jsr
                  #Assuming you have a docker file defined
                  docker build -t nexusurl/Imagename:5.0 .
                '''
            }
        }
        stage('Push Image into Nexus registry') {
            steps {
                sh "echo 'building..'"
                sh'''
                  docker push nexusurl/Imagename:1.0
                '''
                // push compiled docker image into Nexus repository
            }
        }
        stage('Deploy Image from Nexus registry into Kubernetes') {
            steps {
                sh "echo 'building..'"
                # This again depends on how you plan to update. Assuming you are using the same helm charts then you can override what ever imagetag in your values file and run. Or else update the values file and then run. 
                sh'''
                    helm install --set image.tag=5.0
                '''
            }
        }
        stage('Test'){
            steps {
                sh "echo 'Testing...'"
                // This depends on how you have written your tests. 
            }
        }
    }
}

Update

这是如何列出图像的完整工作示例。

pipeline {
    agent any

    stages {
        stage('Hello') {
            steps {
                echo 'Hello World'
                script {
                    INPUT_IMAGE_TO_DEPLOY = input message: 'Please Select Docker Image to deploy', ok: 'Next',
                                                          parameters: [
                                                          choice(name: 'IMAGE_NAME', choices: getDockerImages(), description: 'Select Docker Image to delete')]
                }
            }
        }
    }
}

def getDockerImages() {
    REPOSITORY = 'YOUR_REPO_NAME'
    output = sh(returnStdout: true, script: "aws ecr list-images --repository-name $REPOSITORY --output json").trim()
    json = readJSON text: output
    println json
    return json.imageIds.imageTag
}