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Jenkins and Docker sync well together. Cloud containers are one powerful tool for building software in various environments; moreover, Jenkins is the most suitable tool to run inside a container.
Although the frequently occurring questions are:
This article answers all your questions with the clarity of how to install Jenkins the right way. Using Docker compose will undoubtedly make things faster and reusable. So let’s get started with the basic answers.
Jenkins is a self-contained, open-source automation tool that can be used to automate all tasks related to building, testing, and delivering or deploying software. Jenkins is synonymous with continuous integration and continuous delivery (CI/CD).
The below image shows Jenkins integration with various DevOps tools.
[Also Read: Best productivity tools for mobile app developers]
Containers are software packages containing all the necessary elements to run in any environment. Multiple containers can run on the same machine and share the OS kernel with other containers.
It’s a tool for defining how to run multiple containers in a single configuration file and start, stop, and restart them with a single command.
Running Jenkins with Docker compose
Run these commands in terminal
Change Host Name to Jenkins
> sudo hostname Jenkins
> sudo apt update > sudo apt-get install docker-compose -y
Check version of docker by command
> docker-compose --version
Add current user to the docker group
> sudo usermod -aG docker $USER
> mkdir ~/jenkins
Create docker-compose.yml fileExecute yaml file
> sudo vi docker-compose.yml version: '3.3' services: jenkins: image: jenkins/jenkins:lts restart: unless-stopped privileged: true user: root ports: - 8080:8080 container_name: jenkins volumes: - ~/jenkins:/var/jenkins_home - /var/run/docker.sock:/var/run/docker.sock - /usr/local/bin/docker:/usr/local/bin/docker
Note: Paste this code in the yaml file.
Execute yaml file
> sudo docker-compose up -d
Now you can access the browser with the ip of the instance with port 8080. It will show up like the page below.
To generate an Administrator password, use the below command.
> docker exec jenkins-lts cat /var/jenkins_home/secrets/initialAdminPassword
> docker logs jenkins | less
Enter the password and continue to the next page.
Select Install Suggested Plugins on the next page; next, Enter a username and password and click Save and Continue.
The next page allows you to change your controller’s hostname. You can accept the default and click Save and Finish.
Jenkins is ready to set up an agent!
Businesses prefer Jenkins in a docker container when they want most of the configuration from the server under control. Most organizations keep Jenkins in the pipeline when they want the ability to run the server locally on any machine while experimenting with new features and configurations.
Installing Jenkins with Docker composer will help businesses with:
In this article, we discovered how to configure a Jenkins controller with Docker compose. We asked you to set it up in volume so you can save the instance data between restarts.
This is just the beginning of Docker Composer’s capabilities. You can finally encounter how the tool helps you administer CI/CD infrastructure. It’s time to get started with Docker compose today to extend the above mentioned benefits in your pipeline.
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