Jenkins is an open source, Java-based automation server that offers an easy way to set up a continuous integration and continuous delivery (CI/CD) pipeline.
This tutorial demonstrates the steps of installing Jenkins on Docker Swarm. The Jenkins image that has been used was built with Docker Engine inside and some custom configuration like setting the Jenkins admin user and password, also pre-installed some plugins.
Deploy Jenkins in Docker Swarm
01- First, let’s create a Docker network as below:
# docker network create -d overlay jenkins-net jmjn9ezjg2ftyuk3f8blaaca0
01- First, create the stack Yaml file as below:
version: '3.7' services: jenkins: image: yallalabs/jenkins:centos environment: - JAVA_OPTS=-Djenkins.install.runSetupWizard=false -Dhudson.footerURL=http://yallalabs.com - JENKINS_USER=CHANGE_ME - JENKINS_PASS=CHANGE_ME ports: - 8080:8080 - 50000:50000 volumes: - jenkins_data:/var/jenkins_home - /var/run/docker.sock:/var/run/docker.sock networks: - jenkins-net deploy: mode: replicated replicas: 1 restart_policy: condition: on-failure placement: constraints: - node.role == worker healthcheck: test: ["CMD-SHELL", "curl -sS http://localhost:8080/login || exit 1"] interval: 30s timeout: 10s retries: 5 volumes: jenkins_data: driver: local driver_opts: type: "none" o: "bind" device: "/jenkinsdata" networks: jenkins-net: driver: overlay external: true
/jenkinsdatato all the Docker Swarm Workers.
03- Now, let’s deploy the Jenkins Docker stack by running the below command:
# docker stack deploy -c jenkins_stack.yml jenkins-prod Creating service jenkins-prod_jenkins
04- Finally, let’s check if the stack was deployed successfully:
# docker stack services jenkins-prod ID NAME MODE REPLICAS IMAGE PORTS 7drve5u4cinx jenkins-prod_jenkins replicated 1/1 yallalabs/jenkins:centos *:8080->8080/tcp, *:50000->50000/tcp
In this tutorial, you have learned how to deploy and run Jenkins on Docker Swarm. What’s Next? You might want to check the following guides: