How to Install Jenkins on Ubuntu 22.04 A Step-by-Step Guide
How to Install Jenkins on Ubuntu 22.04: A Step-by-Step Guide
Jenkins is a widely used open-source automation server that simplifies the process of continuous integration and continuous delivery (CI/CD). It allows developers to automate the building, testing, and deployment of their applications, making the software development process more efficient and reliable. In this tutorial, we will walk you through the steps to install Jenkins on Ubuntu 22.04.
Prerequisites
Before we start, make sure you have the following prerequisites in place:
Ubuntu 22.04 Server: You should have a clean installation of Ubuntu 22.04 up and running.
Java: Jenkins requires Java to run. You can install it using the following command:
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sudo apt update sudo apt install openjdk-11-jdk
A user with sudo privileges: It’s a good practice to perform administrative tasks with a non-root user that has sudo privileges. You can follow our guide on creating a sudo user if needed.
Step 1: Update System Packages
Before installing Jenkins, it’s essential to ensure that your system’s package list is up to date. Open a terminal and run:
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sudo apt update
This command will fetch the latest package information from the Ubuntu repositories.
Step 2: Install Jenkins
To install Jenkins on Ubuntu 22.04, you need to add the Jenkins repository to your system and then install Jenkins from there. Follow these commands:
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# Add the Jenkins GPG key to the system
wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -
# Add the Jenkins repository to the sources list
sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'
# Update the package list once more
sudo apt update
# Install Jenkins
sudo apt install jenkins
During the installation, you’ll be prompted to confirm adding the Jenkins repository. Select ‘Yes’ and proceed.
Step 3: Start and Enable Jenkins Service
After Jenkins is successfully installed, start the service and enable it to start automatically on system boot:
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sudo systemctl start jenkins
sudo systemctl enable jenkins
You can check the status of the Jenkins service to ensure that it’s running:
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sudo systemctl status jenkins
If everything is set up correctly, you should see an output indicating that Jenkins is active and running.
Step 4: Configuring Jenkins
Jenkins, by default, runs on port 8080. You can access the Jenkins web interface by opening a web browser and navigating to http://your_server_ip:8080.
To unlock Jenkins, you will need to retrieve the initial admin password. You can find it in the Jenkins server’s log. Use the following command to display the password:
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sudo cat /var/lib/jenkins/secrets/initialAdminPassword
Copy the password and paste it into the Jenkins web interface to unlock it.
Follow the on-screen instructions to complete the Jenkins setup, including installing recommended plugins and creating an admin user.
Step 5: Accessing Jenkins
Once the setup is complete, you can log in to Jenkins using the admin credentials you just created. You will now have full access to Jenkins and can start configuring and using it for your CI/CD needs.
Conclusion
In this tutorial, we’ve walked you through the process of installing Jenkins on Ubuntu 22.04. Jenkins is a powerful tool that can greatly enhance your software development process by automating repetitive tasks and streamlining your CI/CD pipeline. With Jenkins up and running, you’re now ready to explore its features and begin automating your development workflow.