How to Install Jenkins on Ubuntu Server
Jenkins is a popular open-source automation server that helps develop and deploy software projects. In this tutorial, we'll guide you through the process of installing Jenkins on Ubuntu Server.
Prerequisites
- An Ubuntu Server with a user account with sudo privileges
- Access to the internet
Step 1 — Update and Upgrade Ubuntu
First, it is recommended to update and upgrade Ubuntu to ensure that all software packages are up to date. Run the command below to do this:
sudo apt update && sudo apt upgrade
Step 2 — Install Java
Jenkins is a Java-based system, so we'll need to install Java Development Kit (JDK) to run Jenkins. Run the command below to install the latest version of OpenJDK:
sudo apt install -y default-jdk
Verify the installation by checking the Java version with the following command:
java -version
Step 3 — Add Jenkins Repository
Next, we need to add Jenkins repository to our Ubuntu server. Run the following commands to add the GPG key and the Jenkins Debian package repository:
wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -
sudo sh -c 'echo deb https://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'
Step 4 — Install Jenkins
Update the package list and install the latest version of Jenkins by running the following commands:
sudo apt update
sudo apt install -y jenkins
Step 5 — Start Jenkins
By default, Jenkins is not started automatically after installation. You can start the Jenkins service with the following command:
sudo systemctl start jenkins
Check the Jenkins service status with the following command:
sudo systemctl status jenkins
Step 6 — Access Jenkins Web Interface
Jenkins is now installed and running on your Ubuntu server. Access the Jenkins web interface by opening a web browser and going to http://YOUR_SERVER_IP:8080. You should see the Jenkins login page.
To unlock the Jenkins dashboard, you need to retrieve the initial admin password. You can find the password in the following path:
sudo cat /var/lib/jenkins/secrets/initialAdminPassword
Copy the password and paste it on the Jenkins login page. Click on the Continue button and follow the prompts to complete the setup.
Summary
In this tutorial, we showed you how to install Jenkins on Ubuntu Server. You can now use Jenkins to automate your software development processes.