root@jenkins:~# netstat -antp|grep 50000
tcp6 0 0 :::50000 :: LISTEN 5139/java
1.52 Install Jenkins
root@ubuntu20:~# dpkg -i jenkins_2.414.3_all.deb
The key to configuring various types of Agents is how to start the Agent
? JNLP Agent corresponds to the method of “starting the agent through Java Web”
? Establish a Web connection based on HTTPS collaboration between Master and Slave
? When Slave connects to Master for the first time, it needs to provide the Secret for authentication to complete
Bootstrap
?Brief steps to configure JNLP Agent to create a distributed build environment
? Prepare Agent nodes and deploy Jenkins
? On the Master node, add the definition of the Agent node
? On the Master node, obtain the instructions that need to be executed when connecting the Agent node to the Master.
Order
? On the Agent node, open the command terminal and run the command prompted by the Master
? Verify the added results on the Master node
/home/jenkins/agent
Click on the created
agent 1.52 run command
root@ubuntu20:~# mkdir /home/jenkins/agent -pv
root@ubuntu20:~# chown -R jenkins.jenkins /home/jenkins/agent/
curl -sO http://192.168.1.51:8080/jnlpJars/agent.jar
java -jar agent.jar -jnlpUrl http://192.168.1.51:8080/computer/jenkins01-192.168.1.52/jenkins-agent.jnlp -secret db32e82e85dddf69f96f0f50bd13b5380f5f6de1789f0535c01bb6508 43c844a -workDir “/home/jenkins/agent”
Edit the pipeline to fill in the agent’s label
View pipeline will be deployed in agent1.52
Connect to agent via ssh
root@ubuntu20:/var/lib/jenkins/plugins# passwd jenkins
New password: 123456
Retype new password:
passwd: password updated successfully
Successful connection using ssh
Report an error and authorize
Building remotely on jenkins01-1.52 (linux-agent) in workspace /home/jenkins/agent/workspace/spring-boot-helloword2 The recommended git tool is: NONE java.lang.ClassNotFoundException: org.jenkinsci.plugins.gitclient.Git$GitAPIMasterToSlaveFileCallable chown -R jenkins:jenkins /var/lib/jenkins/workspace/
Use docker agent
root@jenkins:~/learning-jenkins-cicd/07-jenkins-agents# cat docker-compose-inbound-agent.yml
version: '3.6'
volumes:
agent01_data: {<!-- -->}
agent02_data: {<!-- -->}
networks:
jenkins_net:
driver: bridge
ipam:
config:
- subnet: 172.31.9.0/24
services:
agent01:
image: jenkins/inbound-agent:alpine-jdk11
hostname: agent01.magedu.com
user: root
environment:
TZ: Asia/Shanghai
JENKINS_URL: http://192.168.1.51:8080 #jenkinsmaster address
JENKINS_AGENT_NAME: agent01.magedu.com #agent name
JENKINS_AGENT_WORKDIR: /home/jenkins/agent
JENKINS_SECRET: 7eecbd2daa66612cac412d4fc484faf80fcee0fc0e8502b12abec11605744074 #jenkins key after adding the node, keep it consistent
# SECRET is automatically generated by the master when adding agent01.
volumes:
- agent01_data:/appdata/jenkins/
networks:
jenkins_net:
ipv4_address: 172.31.9.11
aliases:
- slave01
- agent01
#extra_hosts:
# - "jenkins.magedu.com:172.29.7.7"
#restart: always
agent02:
image: jenkins/inbound-agent:alpine-jdk11
hostname: agent02.magedu.com
user: root
environment:
TZ: Asia/Shanghai
JENKINS_URL: http://192.168.1.51:8080
JENKINS_AGENT_NAME: agent02.magedu.com
JENKINS_AGENT_WORKDIR: /home/jenkins/agent
JENKINS_SECRET: be0e53b93558553ee9694fced68d6443138ee13c5eeaf5d07bfad026d2fd36a6
# SECRET is automatically generated by the master when adding agent02.
volumes:
- agent02_data:/appdata/jenkins/
networks:
jenkins_net:
ipv4_address: 172.31.9.12
aliases:
- slave02
- agent02
#extra_hosts:
# - "jenkins.magedu.com:172.29.7.7"
#restart: always
Yaml file JENKINS_SECRET and the key added in jenkins must be consistent
run
docker-compose -f docker-compose-inbound-agent.yml up
After running successfully
Adding a pipeline can be used
Connect via docker ssh
ssh-keygen -t rsa -b 2048 -P ’
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): .jenkins-ssh-agent-rsa
Your identification has been saved in .jenkins-ssh-agent-rsa
Your public key has been saved in .jenkins-ssh-agent-rsa.pub
View and replace yanl
root@jenkins:~# cat .jenkins-ssh-agent-rsa.pub ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDPIv6Hjrl0r4QroJe + + /xx3wMJesjoKW7Or16ilVTEXLP5PahwJyNlRZIJN5JdmFwu6QV/izQw0JvyceOo5Gebo1LZW6qZmhMJAJB537U38l1Wex7iIpn TlugrLkq2CtaOPKNEYEXBXH0SOaZuTosMoSLI83CBHlWWzAKcd/WRWQOMB48eABGvxC8LZDzrsA/uA3kIRaJS56PeWkBWK/OU/inCfzmSUVbN5uY3eRV/WHZ32R2dk9ELbmBjcxt + w2h + a0aWCu Wj4wSQd8Oy0LfFTuuP + PwCpWasJqhIf3r + nms72oXk1qS9P7peFGybSDGePbW8BD209gJ3UzERif/j root@jenkins
cat docker-compose-ssh-agent.yml
version: '3.6'
volumes:
ssh_agent01_data: {<!-- -->}
ssh_agent02_data: {<!-- -->}
networks:
jenkins_net:
driver: bridge
ipam:
config:
- subnet: 172.31.9.0/24
services:
ssh-agent01:
image: jenkins/ssh-agent:jdk11
hostname: ssh-agent01.magedu.com
#user: jenkins
environment:
TZ: Asia/Shanghai
JENKINS_AGENT_HOME: /home/jenkins
JENKINS_AGENT_SSH_PUBKEY: ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDPIv6Hjrl0r4QroJe + + /xx3wMJesjoKW7Or16ilVTEXLP5PahwJyNlRZIJN5JdmFwu6QV/izQw0JvyceOo5Gebo1LZW6qZmhMJAJ B537U38l1Wex7iIpnTlugrLkq2CtaOPKNEYEXBXH0SOaZuTosMoSLI83CBHlWWzAKcd/WRWQOMB48eABGvxC8LZDzrsA/uA3kIRaJS56PeWkBWK/OU/inCfzmSUVbN5uY3eRV/WHZ32R2dk9ELb mBjcxt + w2h + a0aWCuWj4wSQd8Oy0LfFTuuP + PwCpWasJqhIf3r + nms72oXk1qS9P7peFGybSDGePbW8BD209gJ3UzERif/j root@jenkins
# SSH PRIVATE KEY and PUBLIC KEY is generated by you.
networks:
jenkins_net:
ipv4_address: 172.31.9.21
aliases:
-ssh-slave01
-ssh-agent01
ports:
- "22022:22"
#restart: always
ssh-agent02:
image: jenkins/ssh-agent:jdk11
hostname: ssh-agent02.magedu.com
#user: jenkins
environment:
TZ: Asia/Shanghai
#JENKINS_AGENT_HOME: /home/jenkins
JENKINS_AGENT_SSH_PUBKEY: ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDPIv6Hjrl0r4QroJe + + /xx3wMJesjoKW7Or16ilVTEXLP5PahwJyNlRZIJN5JdmFwu6QV/izQw0JvyceOo5Gebo1LZW6qZmhMJAJ B537U38l1Wex7iIpnTlugrLkq2CtaOPKNEYEXBXH0SOaZuTosMoSLI83CBHlWWzAKcd/WRWQOMB48eABGvxC8LZDzrsA/uA3kIRaJS56PeWkBWK/OU/inCfzmSUVbN5uY3eRV/WHZ32R2dk9ELb mBjcxt + w2h + a0aWCuWj4wSQd8Oy0LfFTuuP + PwCpWasJqhIf3r + nms72oXk1qS9P7peFGybSDGePbW8BD209gJ3UzERif/j root@jenkins
# SSH PRIVATE KEY and PUBLIC KEY is generated by you.
networks:
jenkins_net:
ipv4_address: 172.31.9.22
aliases:
-ssh-slave02
-ssh-agent02
ports:
- "22122:22"
#restart: always
Run container
root@jenkins:~/learning-jenkins-cicd/07-jenkins-agents# docker-compose -f docker-compose-ssh-agent.yml up
Created in jenkins, the private key is saved as an authentication certificate
cat .jenkins-ssh-agent-rsa -----BEGIN OPENSSH PRIVATE KEY----- b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAABFwAAAAdzc2gtcn NhAAAAAwEAAQAAAQEAzyL + h465dK + EK6CXvvv8cd8DCXrI6Cluzq9eopVUxFyz + T2ocCcj ZUWSCTeSXZhcLukFf4s0MNCb8nHjqORnm6NS2VuqmZoTCQCQed + 1N/JdVnse4iKZ05boKy 5KtgrWjjyjRGBFwVx9Ejmmbk6LDKEiyPNwgR5VlswCnHf1kVkDjAePHgARr8QvC2Q867AP 7gN5CEWiUuej3lpAVivzlP4pwn85klFWzebmN3kVf1h2d9kdnZPRC25gY3MbfsNofmtGlg rlo + MEkHfDstC3xU7rj/j8AqVmrCaoSH96/p5rO9qF5NakvT + 6XhRsm0gxnj21vAQ9tPYC d1MxEYn/4wAAA8goLZHGKC2RxgAAAAdzc2gtcnNhAAABAQDPIv6Hjrl0r4QroJe + + /xx3w MJesjoKW7Or16ilVTEXLP5PahwJyNlRZIJN5JdmFwu6QV/izQw0JvyceOo5Gebo1LZW6qZ mhMJAJB537U38l1Wex7iIpnTlugrLkq2CtaOPKNEYEXBXH0SOaZuTosMoSLI83CBHlWWzA Kcd/WRWQOMB48eABGvxC8LZDzrsA/uA3kIRaJS56PeWkBWK/OU/inCfzmSUVbN5uY3eRV/ WHZ32R2dk9ELbmBjcxt + w2h + a0aWCuWj4wSQd8Oy0LfFTuuP + PwCpWasJqhIf3r + nms72o Xk1qS9P7peFGybSDGePbW8BD209gJ3UzERif/jAAAAAwEAAQAAAQAj3Qg6ykBb7qOwtg5v 98seoCEze/nbEIlp6b014ysZEH/ssHtAZ9ZeC2ycge2qnN2hFaFpEt4Hcab + lC95p4o0zV Nj5NYl4CJZlapuH4iN1j3I4mpXduwxUViDWXGAEWJSoDcYeJ67OttA05B4WssCdcfDCTs6 b9kb0djF5JM1Bee0A6O1g8nQPWtxjkFLfS5M0/PEwoMj7Slq + mQirZSzXeTMu5mZ4bLtNd n7lTJxAV5zKDX1QsKvWFw5Rj74AG4ppGfGTuUkM5tBSkim7DSl0TiEW4Y9Q2oALZiDSrXy g8EfTGrtVphJZzKCfFdJ7TtWaSqYohDWKt5xMZK0 + f2xAAAAgFCJKXFxjCMf5NOke8EId0 mo0tEaxmyFdSfgqdWZqY2ZTZ + G/JODs4R8YOhIpmL6UfqD8MUw/B + smBPE02IDFjPpAYof OQTPQSZxJdvSzyxfnUZIC3UlUIBm2u1qWxXTWxLJ5yg4JbUmF39U1O2Ye9oVpCxzT09iVs 7b8EitCQ9VAAAAgQDoMGkkM4XNIo2bmLTx0o3JntkrxpeKm4igX52/cgpnUVLvgXRBv2tM Mif7baxWwtecW9p0y0w2WkqWsZZGRVQvUBf0NWx21xw1KWayCWXWCJgznjePJc7KzzxTod eCW1pS0WbGqeCDx100xxxuCJCe4FB/YMpO5zyClAZUCRjqqwAAAIEA5GDj7zXXwNb1viJO fMLCcK28Qhho2ueIOZIZF2TqcgElQaPUHVrBHQUtr/wEPqFYGLRP2qAiBNEQCL0QmuA94P FxaKbQThtW/MZxSweitRxl5brua8jVofx2 + 6w/CNTco4DdmSceV0mZEKm + LPPaZsdM9g/b huHbDn6nuAsFP6kAAAAMcm9vdEBqZW5raW5zAQIDBAUGBw== -----END OPENSSH PRIVATE KEY-----
jenkins adds slave node
192.168.1.51 is the host where the jenkins container is running.
Host Key Verification Strategy Select non
/opt/java/openjdk/bin/java is the java path in the container
View normal
Dynamic Agent based on Docker container
#192.168.1.52
docker service add
vim /usr/lib/systemd/system/docker.service
-H tcp://0.0.0.0:2376
root@ubuntu20:~/.ssh# systemctl daemon-reload
root@ubuntu20:~/.ssh# systemctl restart docker.service
jenkins server test
root@jenkins:~# curl http://192.168.1.52:2376/version
{<!-- -->"Platform":{<!-- -->"Name":"Docker Engine - Community"},"Components":[{<!-- -->"Name":"Engine","Version":"24.0.7","Details":{<!-- -->"ApiVersion":\ "1.43","Arch":"amd64","BuildTime":"2023-10-26T09:08:01.000000000 + 00:00","Experimental":"false ","GitCommit":"311b9ff","GoVersion":"go1.20.10","KernelVersion":"5.4.0-81-generic","MinAPIVersion ":"1.12","Os":"linux"}},{<!-- -->"Name":"containerd","Version":\ "1.6.24","Details":{<!-- -->"GitCommit":"61f9fd88f79f081d64d6fa3bb1a0dc71ec870523"}},{<!-- -->"Name":\ "runc","Version":"1.1.9","Details":{<!-- -->"GitCommit":"v1.1.9-0-gccaecfc" }},{<!-- -->"Name":"docker-init","Version":"0.19.0","Details":{<!-- -->"GitCommit":"de40ad0"}}],"Version":"24.0.7","ApiVersion":"1.43","MinAPIVersion": "1.12","GitCommit":"311b9ff","GoVersion":"go1.20.10","Os":"linux","Arch": "amd64","KernelVersion":"5.4.0-81-generic","BuildTime":"2023-10-26T09:08:01.000000000 + 00:00"}
Install the plug-in docker-plugin
tcp://192.168.1.52:2376 #docker address
docker-agent2 docker-dyn-agent-2 #label, the pipeline must be configured with labels before it can be used
jenkins/inbound-agent:jdk11 #mirror
The build prompt failed and succeeded after restarting Jenkins:
Add ssh Agent template on Docker Cloud
System management-clounds
Edit and modify pipeline
Check the used
