Install and Configure Jenkins on Ubuntu 18.04.TLS
Step 1: Log in to your ubuntu server and update it.
sudo apt-get -y update
Step 2: Install Java runtime environment (JDK)
sudo apt install openjdk-11-jdk -y
Step 3: Add the Jenkins keys to your system so you can download the build
wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -
Step 4: Create the Jenkins build list file
sudo touch /etc/apt/sources.list.d/jenkins.list
Step 5: Add the Jenkins build ID to the build List file
sudo sh -c 'echo "deb https://pkg.jenkins.io/debian-stable binary/" >>/etc/apt/sources.list.d/jenkins.list'
Step 6: Update the packages
sudo apt-get update -y
Step 7: Install Jenkins
sudo apt-get install jenkins -y
Step 8: Start Jenkins
sudo service jenkins start
Step 9: Open your local browser and enter
http://localhost:8080/
Step 10: To get the initial password, open or cat your initial admin password file:
sudo cat /var/lib/jenkins/secrets/initialAdminPassword
Where to find Jenkins Logs – The initial Jenkins password is also here
/var/log/jenkins/jenkins.log