Jenkins on Ubuntu 20.04

2020-09-06 System Programing @JS

My test platform: Ubuntu Server 20.04.1

Requirements: user with root privileges or non-root user with sudo privileges.

Jenkins installation

$ sudo apt update; sudo apt upgrade -y              # Reboot if required
$ sudo apt install openjdk-11-jre-headless -y
$ java --version
$ wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -
$ sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'
$ sudo apt update; sudo apt install jenkins -y
$ sudo systemctl is-enabled jenkins.service
$ sudo systemctl status jenkins.service

Jenkins configuration

Open your web browser and enter the URL of your Jenkins, followed by the default service port 8080 ( http://ip-address:8080 ).
To view the Administrator password, use the cat command on /var/lib/jenkins/secrets/initialAdminPassword.
Copy the password and paste it in the text field. Click the Continue button.
Select Install suggested plugin.
Create an Admin user and click on the Save and Continue button.
Click Save and Finish. Finally, click on the Start using Jenkins.

Reference: Jenkins User Documentation.