jenkins_ubuntu.txt

Jenkins Ubuntu Installation 

sudo apt update

sudo apt-get install fontconfig openjdk-17-jre (if Java doesnt exist)
java -version

sudo wget -O /usr/share/keyrings/jenkins-keyring.asc \
  https://pkg.jenkins.io/debian/jenkins.io-2023.key

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

sudo apt-get update

sudo apt-get install jenkins

sudo systemctl start jenkins
sudo systemctl enable jenkins
sudo systemctl status jenkins

http://localhost:8080

It will ask for the authentication key. Copy the path and use in terminal

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

Cont -> Paste the key from terminal to the Jenkins server -> Cont