Jenkins添加docker從節點

jenkins on Windows10  192.168.1.8,

docker  on Ubuntu, 192.168.1.11

從ubuntu create 一個image from dockerfile， 從Jenkins添加這個image做從節點。

 

 

 

1. 配置docker host  to enable remote API

     # Jenkins通過REST API連接docker，Docker Remote API port: 4243, Docker Hostport Range: 32768 - 60999

     打開docker service file :  /lib/systemd/system/docker.service,  找到ExecStart一行，將其替換成：

ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:4243 -H unix:///var/run/docker.sock

      重啟docker

sudo systemctl daemon-reload
sudo service docker restart

      驗證：

docker host:     curl http://localhost:4243/version
Jenkins host:    curl http://192.168.1.11:4243/version

 

 

2. 創建一個簡單鏡像, 必須包含ssh server, java, 登錄用戶名密碼

      Dockerfile:  

FROM ubuntu:18.04

RUN apt-get update && \
    apt-get -qy full-upgrade && \
    apt-get install -qy git && \
# Install a basic SSH server
    apt-get install -qy openssh-server && \
    sed -i 's|session    required     pam_loginuid.so|session    optional     pam_loginuid.so|g' /etc/pam.d/sshd && \
    mkdir -p /var/run/sshd && \
# Install JDK 8 
    apt-get install -qy openjdk-8-jdk && \
# Cleanup old packages
    apt-get -qy autoremove && \
# Add user jenkins to the image
    adduser --quiet jenkins && \
# Set password for the jenkins user 
    echo "jenkins:jenkins" | chpasswd && \
    mkdir /home/jenkins/.m2

# Copy authorized keys
COPY ~/.ssh/authorized_keys /home/jenkins/.ssh/authorized_keys

RUN chown -R jenkins:jenkins /home/jenkins/.m2/ && \
    chown -R jenkins:jenkins /home/jenkins/.ssh/

# Standard SSH port
EXPOSE 22

CMD ["/usr/sbin/sshd", "-D"]

       在Ubuntu將 Dockerfile和.ssh放在同一目錄：

$ docker build -t jenkins_node .

 

3. 配置Jenkins

       添加Dock插件

       進入Manage Jenkins - System Configuration - Manage Nodes and Clouds - Configure Clouds

       

 

          

          點開Docker Agent templates, 其中Registry Authentication和SSH Credentials都是Dockerfile中的jenkins/jenkins

       

4. 新建任務，Restrict where this project can be run，填上Label:  dockerNode

5. Build Now...

 

 

https://devopscube.com/docker-containers-as-build-slaves-jenkins/