weiyigeek/alpine-jenkins-jnlp

By weiyigeek

•Updated over 4 years ago

该镜像是Jenkins自定义jnlp容器模板，主要用于Jenkins工作节点容器化使用，主要包含Gitlab_release发布、 docker 容器管理、kubectl 集群管理功能。

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weiyigeek/alpine-jenkins-jnlp repository overview

⁠0x00 前言简述

该镜像是Jenkins自定义jnlp容器模板，主要用于Jenkins工作节点容器化使用，以及Jenkins的Kubernetes集群中使用，以便动态生成工作节点，并在完成Job后自动销毁该Pod。

作者主页: https://www.weiyigeek.top⁠ 作者博客: https://blog.weiyigeek.top⁠

主要实现功能:

用户权限控制(sudo)
ssh 远程连接
git 代码版本控制
docker 容器管理
kubectl 集群管理
Java 运行环境
Maven 运行环境
SonarQube 扫描环境
Gitlab_release 上传环境
中文环境支持
时区更改配置

镜像构建所需软件

备注: 在 Jenkins 2.277 版本中添加一个新的节点中获取匹配当前版本的 agent.jar, 或者是在 jenkins 官网 https://repo.jenkins-ci.org/public/org/jenkins-ci/main/remoting⁠ 进行下载;

~/k8s/jenkins/jnlp-slave$ ls
agent.jar                      build              jdk-8u281-linux-x64.tar.gz  Jenkins.zip  release-cli-0.6.0-linux-amd64  sonar-scanner-cli-4.5.0.2216-linux.zip
apache-maven-3.6.3-bin.tar.gz  glibc-2.32-r0.apk  jenkins-agent.sh            kubectl      sgerrand.rsa.pub

温馨提示: 当前jnlp最新镜像版本为 weiyigeek/alpine-jenkins-jnlp:v2.330

温馨提示: 建议一定要看看容器中 jenkins-agent.sh （值得学习），它容器启动时与jenkins利用Java jnlp 进行连接的脚本;

温馨提示: 博主Jenkins Kubernetes-plugin 插件实践使用示例。

// [Jenkins Pipeline 流水线 开始]
pipeline {
  // 流水线运行的主机绑定,此处利用动态的K8s节点进行。
  agent {
    kubernetes {
      cloud 'kubernetes'
      namespace 'devops'
      inheritFrom 'jenkins-slave'
      showRawYaml 'false'
      workingDir '/home/jenkins/agent'
      yaml """\
apiVersion:
kind: Pod
metadata:
  labels:
    app: 'jenkins-jnlp'
    job: ${JOB_NAME}
spec:
  serviceAccountName: 'jenkins-sa'
  automountServiceAccountToken: false
  securityContext:
    runAsUser: 1000   # default UID of jenkins user in agent image
  containers:
  - name: 'jnlp'
    image: 'weiyigeek/alpine-jenkins-jnlp:v2.330'
    imagePullPolicy: 'IfNotPresent'
    command: ["/bin/sh"]
    args: ["-c","/usr/local/bin/jenkins-agent.sh && cat"]
    tty: true
    env:
      - name: JAVA_OPTS
        value: '-Xms512m -Xmx1g -Xss1m'
    resources:
      limits: {}
      requests:
        memory: '512Mi'
        cpu: '500m'
    volumeMounts:
    - name: 'maven-cache'
      mountPath: '/home/jenkins/.m2'
    - name: 'docker-socket'
      mountPath: '/var/run/docker.sock'
  volumes:
  - name: maven-cache
    hostPath: 
      path: /nfs/mavenRepo
  - name: docker-socket
    hostPath: 
      path: /var/run/docker.sock
    """
    }
  }

⁠0x01 使用自定义 alpine-jenkins-jnlp 镜像

描述：下面的测试环境是在 Jenkins 中 Kubernetes集群插件进行使用的，如果不会安装建议看我写的Jenkins入门到放弃系列教程。

https://www.bilibili.com/read/cv13512558⁠ 可点击目录，查看全部

....

https://www.bilibili.com/read/cv13726631⁠ 可点击目录，查看全部

废话不多说：

Step 1.创建流水线 Kubernetes-jenkins-slave Job 在流水线中采用Pipeline Script脚本

pipeline {
  agent {
    kubernetes {
      cloud 'kubernetes'
      namespace 'devops'
      inheritFrom 'jenkins-slave'
      workingDir '/home/jenkins/agent'
      // yamlFile 'KubernetesPod.yaml'
      yaml """\
apiVersion:
kind: Pod
metadata:
  labels:
    jenkins: "slave"
    jenkins/label: 'k8s-slave'
spec:
  containers:
  - name: 'jnlp'
    image: 'weiyigeek/alpine-jenkins-jnlp:v2.330'
    imagePullPolicy: 'IfNotPresent'                                     # 镜像拉取策略
    command: ["/bin/sh","-c","/usr/local/bin/jenkins-agent.sh && cat"]  # 重点测试的时候(心酸累)希望读者体验一哈
    tty: true
    volumeMounts:
    - mountPath: "/home/jenkins/.m2"
      name: "volume-0"
    - mountPath: "/var/run/docker.sock"
      name: "volume-1"
    """.stripIndent()
    }
  }
  stages {
    stage ('declarative Pipeline - kubernetes') {
      steps {
        echo "declarative Pipeline - kubernetes"
        sh "mvn -version"
        sh "release-cli -v"
        sh "sonar-scanner -v"
        sh "kubectl version"
        sh "docker --version && sudo docker ps"
      }
    }
  }
}

Step 2.配置Pod Templates模板如下因为我们需要继承一哈

名称：jenkins-slave
命名空间: devops
标签列表: k8s-slave
添加主机卷: 
 - 主机: /nfs/appstorage/mavenRepo
 - Pod 挂载路径: /home/jenkins/.m2
 - 主机: /var/run/docker.sock
 - Pod 挂载路径: /var/run/docker.sock

Step 3.在BlueOcen中运行并查看结果

# (1) 可以看见当进行调度时k8s会动态的拉取镜像并运行，当任务结束后会自动销毁Pod
kubernetes-jenkins-slave-63-01h9j-txdgn-cdwb5   0/1     Pending   0          0s
kubernetes-jenkins-slave-63-01h9j-txdgn-cdwb5   0/1     Pending   0          0s
kubernetes-jenkins-slave-63-01h9j-txdgn-cdwb5   0/1     ContainerCreating   0          0s
kubernetes-jenkins-slave-63-01h9j-txdgn-cdwb5   1/1     Running             0          3s
kubernetes-jenkins-slave-63-01h9j-txdgn-cdwb5   1/1     Terminating         0          13s
kubernetes-jenkins-slave-63-01h9j-txdgn-cdwb5   0/1     Terminating         0          45s
kubernetes-jenkins-slave-63-01h9j-txdgn-cdwb5   0/1     Terminating         0          46s
kubernetes-jenkins-slave-63-01h9j-txdgn-cdwb5   0/1     Terminating         0          46s

# (2) 动态创建的slave启动的Pod脚本
---
kind: "Pod"
metadata:
  annotations:
    buildUrl: "http://jenkins.devops.svc.cluster.local:8080/job/Kubernetes-jenkins-slave/63/"
    runUrl: "job/Kubernetes-jenkins-slave/63/"
  labels:
    jenkins: "slave"
    jenkins/label: "Kubernetes-jenkins-slave_63-01h9j"
    jenkins/label-digest: "0fe6224168b9ce0350e7db8678c10953c2e6f533"
  name: "kubernetes-jenkins-slave-63-01h9j-txdgn-cdwb5"
spec:
  containers:
  - command:
    - "/bin/sh"
    - "-c"
    - "/usr/local/bin/jenkins-agent.sh && cat"
    env:
    - name: "JENKINS_SECRET"
      value: "********"
    - name: "JENKINS_AGENT_NAME"
      value: "kubernetes-jenkins-slave-63-01h9j-txdgn-cdwb5"
    - name: "JENKINS_NAME"
      value: "kubernetes-jenkins-slave-63-01h9j-txdgn-cdwb5"
    - name: "JENKINS_AGENT_WORKDIR"
      value: "/home/jenkins/agent"
    - name: "JENKINS_URL"
      value: "http://jenkins.devops.svc.cluster.local:8080/"
    image: "weiyigeek/alpine-jenkins-jnlp:v2.285"
    imagePullPolicy: "IfNotPresent"
    name: "jnlp"
    resources:
      limits: {}
      requests:
        memory: "256Mi"
        cpu: "100m"
    tty: true
    volumeMounts:
    - mountPath: "/home/jenkins/.m2"
      name: "volume-0"
    - mountPath: "/var/run/docker.sock"
      name: "volume-1"
    - mountPath: "/home/jenkins/agent"
      name: "workspace-volume"
      readOnly: false
  hostNetwork: false
  nodeSelector:
    kubernetes.io/os: "linux"
  restartPolicy: "Never"
  volumes:
  - hostPath:
      path: "/nfs/appstorage/mavenRepo"
    name: "volume-0"
  - hostPath:
      path: "/var/run/docker.sock"
    name: "volume-1"
  - emptyDir:
      medium: ""
    name: "workspace-volume"

# Running on kubernetes-jenkins-slave-63-01h9j-txdgn-cdwb5 in /home/jenkins/agent/workspace/Kubernetes-jenkins-slave

# 脚本反馈
declarative Pipeline - kubernetes
+ mvn -version
  Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
  Maven home: /usr/local/maven
  Java version: 1.8.0_281, vendor: Oracle Corporation, runtime: /usr/local/jdk8/jre
  Default locale: en_US, platform encoding: ANSI_X3.4-1968
  OS name: "linux", version: "5.4.0-42-generic", arch: "amd64", family: "unix"

+ release-cli -v
     version 0.6.0

+ sonar-scanner -v
  INFO: Scanner configuration file: /usr/local/sonar-scanner/conf/sonar-scanner.properties
  INFO: Project root configuration file: NONE
  INFO: SonarScanner 4.5.0.2216
  INFO: Java 1.8.0_281 Oracle Corporation (64-bit)
  INFO: Linux 5.4.0-42-generic amd64

+ kubectl version
  Client Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.6", GitCommit:"fbf646b339dc52336b55d8ec85c181981b86331a", GitTreeState:"clean", BuildDate:"2020-12-18T12:09:30Z", GoVersion:"go1.15.5", Compiler:"gc", Platform:"linux/amd64"}
  Server Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.6", GitCommit:"fbf646b339dc52336b55d8ec85c181981b86331a", GitTreeState:"clean", BuildDate:"2020-12-18T12:01:36Z", GoVersion:"go1.15.5", Compiler:"gc", Platform:"linux/amd64"}

+ docker --version
  Docker version 20.10.3, build 48d30b5b32e99c932b4ea3edca74353feddd83ff

+ sudo docker ps  # 非常注意权限
CONTAINER ID   IMAGE                                                           COMMAND                  CREATED              STATUS          PORTS     NAMES
bd9948326a78   weiyigeek/alpine-jenkins-jnlp:v2.285                         "/bin/sh -c '/usr/lo…"   39 seconds ago       Up 32 seconds             k8s_jnlp_kubernetes-jenkins-slave-68-91jbw-svtg2-3vq9b_devops_6d4bc0d2-b34f-46fc-9c9d-65537cb2bff8_0
84538d2017c2   registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.2   "/pause"                 About a minute ago   Up 58 seconds             k8s_POD_kubernetes-jenkins-slave-68-91jbw-svtg2-3vq9b_devops_6d4bc0d2-b34f-46fc-9c9d-65537cb2bff8_0

Finished: SUCCESS

WeiyiGeek.custom-jenkins-jnlp

⁠0x02 企业实践 Jenkins 流线脚本（Pipeline Script）

镜像的Dockerfile构建文件请访问获取: https://mp.weixin.qq.com/s/FWmQNinsYZwyeL3c-6x6tw⁠

如需企业实践 Jenkins 流线脚本和上述相关脚本及文件的朋友请访问 https://weiyigeek.top/wechat.html?key=alpine-jenkins-jnlp⁠

或者在WeiyiGeek微信公众号回复alpine-jenkins-jnlp关键字获取，返回作者当前在企业实践使用的 Jenkins Pipeline Script。

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Last updated

over 4 years ago

docker pull weiyigeek/alpine-jenkins-jnlp:v2.330