Jenkins of the integrate tool

Integrate Tools

Continuous integration 、 There are many tools for continuous deployment , among Jenkins Is an open source continuous integration platform .

Jenkins It involves the task of publishing the written code to the test environment and production environment , And it also involves tasks such as building projects .

Jenkins A lot of plug-ins are needed to ensure work , High installation cost , We will be based on Docker build Jenkins.

preparation

The server suggests 2 nucleus 4G The above configuration .

Get ready jdk and maven Installation package . among maven Need to be in setting.xml Configuring the mirror source and jdk1.8 Plug in for , as follows ：

#  Alibaba cloud image address 
<mirror>  
    <id>alimaven</id>  
    <name>aliyun maven</name>  
    <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
    <mirrorOf>central</mirrorOf>          
</mirror>

<profile>
    <id>jdk-1.8</id>
    <activation>
        <activeByDefault>true</activeByDefault>
        <jdk>1.8</jdk>
    </activation>
    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>
    </properties>        
</profile>

1. Jenkins Introduce

Official website ：https://www.jenkins.io/

Baidu Encyclopedia ：Jenkins It's an open source software project , Is based on Java A continuous integration tool for development , Used to monitor continuous repetitive work , To provide an open and easy-to-use software platform , Enable continuous integration of software projects .

Jenkins Widely applied , Most Internet companies use Jenkins coordination GitLab、Docker、K8s As an implementation DevOps Core tools of .

Jenkins The most powerful is the plug-in ,Jenkins The government provides a large number of plug-in Libraries , From dynamic CI/CD Various trivial functions in the process .

Jenkins The main job is to GitLab Pull and build the engineering code that can be built on , According to the process, you can choose to publish to the test environment or production environment .

It's usually GitLab After a lot of testing on the code , Determine the release version , Then publish to the production environment .

2. Jenkins install

• Pull Jenkins Mirror image

docker pull jenkins/jenkins

• To write docker-compose.yml

version: "3.1"
services:
  jenkins:
    image: jenkins/jenkins
    container_name: jenkins
    ports:
      - 8080:8080
      - 50000:50000
    volumes:
      - ./data/:/var/jenkins_home/

Note that the image version number should correspond to . Pay attention to the mount directory data, The configuration of later plug-ins should be modified here .

• Start the mirror

docker-compose up -d

• The first start will be due to the data volume data The directory does not have permission, resulting in startup failure , Set up data Directory write permission

chmod -R a+w data/

• because Jenkins Need to download a lot of content , However, due to the default download address, the download speed is slow , You need to reset the download address to the domestic mirror station

#  Modify... In the data volume hudson.model.UpdateCenter.xml file 
 take https://updates.jenkins.io/update-center.json Amend to read as follows 

#  Replace the download address with http://mirror.esuni.jp/jenkins/update
#  The plug-in source of Tsinghua university can also https://mirrors.tuna.tsinghua.edu.cn/jenkins/updates/update-center.json

After modification, restart docker-compose restart.

• Restart again Jenkins Containers , visit Jenkins（ Need to wait a minute ）

The page shows initializing , Wait a minute .

• View password login Jenkins, Log in and download the plug-in

docker exec -it jenkins cat /var/jenkins_home/secrets/initialAdminPassword

• Choose the plug-ins you want to install

explain ： The plug-in download failed and is normal , You can also download it later , Click continue . The official website can also be downloaded .

• After downloading the setting information, enter the home page

• Download the two required plug-ins first

Git Parameter and Publish Over SSH

thus , The installation is successful ！！！