jenkins: 3.1.0 管理slave节点

1. 管理slave节点

step 0. 和slave节点通信有几种方式

• SSH
• windows administrative account
• Java Web Start (JNLP)

你可以选择最适合你环境的，我们这里使用SSH的方式

step 1. 生成ssh文件

在jenkins-master上执行

# 使用jenkins用户执行下面命令

# DOCKER
# 如果使用的是docker启动的jenkins，可以执行
mkdir jenkins
chmod 777 jenkins
docker run --rm -it -v `pwd`/jenkins:/var/jenkins_home jenkins:lts ssh-keygen
chmod 755 jenkins
# 在./jenkins/.ssh目录得到id_rsa和id_rsa.pub两个文件

# 非DOCKER
su - jenkins
ssh-keygen
# 在/home/jenkins/.ssh目录得到id_rsa和id_rsa.pub两个文件

step 2. 在jenkins上配置凭证

• 选择credentials
• 点击global域链接
• 选择增加credentials
• 填写信息
  • Kind: SSH Username with private key
  • Scope: Global
  • Username: jenkins
  • Private key: Enter directly and paste the ‘id_rsa’ private key of Jenkins user from the master server.

step 3. 启动docker-slave

cat << EOF > docker-compose-jenkins-slave.yml
version: '3'
services:
  jenkins-slave:
    image: 'jenkins/ssh-slave'
    container_name: jenkins-slave
    restart: always
    volumes:
      - /data/jenkins_home:/var/jenkins_home
      - /var/run/docker.sock:/var/run/docker.sock
      - /usr/bin/docker:/usr/bin/docker
    environment:
      - JAVA_ARGS=-Dorg.apache.commons.jelly.tags.fmt.timeZone=Asia/Shanghai
    entrypoint:
      - setup-sshd
      - "<id_rsa.pub>"
EOF

docker-compose -f docker-compose-jenkins-slave.yml up -d

step 4. jenkins web端配置上新的slave

• Manage Jenkins

• Manage Nodes

• New Node

• 输入node名称，选择permanent agent，点击OK

• 输入node节点详细信息

  • Description: slave01 node agent server
  • Remote root directory: /home/jenkins
  • Labels: slave01
  • Launch method: Launch slave agent via SSH, type the host ip address ‘10.0.15.21’, choose the authentication using ‘Jenkins’ credential.

• Manage Jenkins

• Configure System

• 配置slave