How To Install Jenkins On Ubuntu 22: A Comprehensive Guide

In the world of software development and continuous integration, Jenkins has established itself as a reliable and popular tool. Learn how to install Jenkins on Ubuntu 22 step-by-step with this comprehensive guide. Automate your development processes and enhance collaboration using Jenkins.

Introduction to Jenkins

Contents Collapse

Introduction to Jenkins

Prerequisites

Steps to Install Jenkins on Ubuntu 22

Updating System Packages

Installing Java

Adding Jenkins Repository

Installing Jenkins

Starting Jenkins Service

Accessing Jenkins Web Interface

Setting up Jenkins

Creating Your First Jenkins Job

Jenkins Plugins

Securing Jenkins

Uninstalling Jenkins

Troubleshooting Common Issues

Conclusion

FAQs

Prerequisites

Before you dive into the installation process, make sure you have the following prerequisites in place:

A system running Ubuntu 22
A user account with sudo privileges

Steps to Install Jenkins on Ubuntu 22

Updating System Packages

The first step is to ensure that your system’s package repository is up-to-date. Open a terminal and run the following commands:

sudo apt update sudo apt upgrade

Installing Java

Jenkins requires Java to be installed on your system. You can install OpenJDK by running:

sudo apt install openjdk-11-jdk

Adding Jenkins Repository

Next, you need to add the Jenkins repository to your system. This will allow you to install Jenkins using the package manager. Run the following commands:

curl -fsSL https://pkg.jenkins.io/debian-stable/jenkins.io-2023.key | sudo tee \
/usr/share/keyrings/jenkins-keyring.asc > /dev/null

echo deb [signed-by=/usr/share/keyrings/jenkins-keyring.asc] \
https://pkg.jenkins.io/debian-stable binary/ | sudo tee \
/etc/apt/sources.list.d/jenkins.list > /dev/null

These above commands fetch the GPG key for the Jenkins repository, add it to the system’s keyring, and then create a new repository source entry that points to the Jenkins repository, using the downloaded GPG key for verification. This allows the system to install and update Jenkins using standard package management tools like apt.

Installing Jenkins

With the repository added, you can now install Jenkins:

sudo apt update 
sudo apt install jenkins

Starting Jenkins Service

Once the installation is complete, start the Jenkins service and enable it to start on boot:

sudo systemctl start jenkins 
sudo systemctl enable jenkins

Accessing Jenkins Web Interface

You can access the Jenkins web interface by opening your browser and navigating to http://your_server_ip_or_domain:8080. You will be prompted to enter the initial admin password, which you can find on your server:

sudo cat /var/lib/jenkins/secrets/initialAdminPassword

Setting up Jenkins

Follow the on-screen instructions to complete the Jenkins setup process. You can choose to install suggested plugins or select specific ones based on your requirements.

Creating Your First Jenkins Job

Once the setup is complete, you can start creating your first Jenkins job. Click on “New Item,” give your job a name, and choose the type of job you want to create (e.g., Freestyle project or Pipeline).

Jenkins Plugins

Jenkins offers a wide range of plugins that enhance its functionality. You can browse and install plugins by navigating to “Manage Jenkins” > “Manage Plugins.”

Securing Jenkins

It’s crucial to secure your Jenkins installation to prevent unauthorized access. You can configure security settings, manage user accounts, and enable authentication and authorization mechanisms.

Uninstalling Jenkins

If you ever need to uninstall Jenkins, you can do so by running:

sudo apt remove --purge jenkins

Troubleshooting Common Issues

Encountering issues is not uncommon during software installations. Refer to the official Jenkins documentation and online resources to troubleshoot common problems.

Conclusion

Installing Jenkins on Ubuntu 22 can significantly improve your development workflow by automating tasks and streamlining collaboration. By following this guide, you’ve successfully set up Jenkins and are ready to embark on a more efficient development journey.