Install Jenkins on Ubuntu server

Part 1 - Download and install Jenkins

wget -q -O - https://pkg.jenkins.io/debian-stable/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

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Part 2 - Starting Jenkins

sudo systemctl start jenkins

sudo systemctl status jenkins

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Part 3 - Opening the Firewall

sudo ufw enable

sudo ufw allow OpenSSH

sudo ufw allow 8080

• Check the UFW status via,

sudo ufw status

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Part 4 - Setting Up Jenkins

• Open the url :8080 in your browser.

• Get the unlocking password from,
  

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

• Click the Install suggested plugins option.

• Set-up the admin user.

• Assign the url :8080 in the Instance Configuration page.

• Save the details and the Jenkins is set on the server.