Setup Jenkins on Ubuntu 18.04 on AWS Lightsail

I couldn't find a guide for this - and I had to do this recently. So here goes!

1. Install Java

sudo apt update && sudo apt install -y openjdk-8-jdk

2. Add the Jenkins Debian repository

wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -

3. Add the repo to system

sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'

4. Install Jenkins

sudo apt update
sudo apt install jenkins
systemctl status jenkins

5. Add firewall rule

In AWS lightsail > click on instance > networking tab > under firewall - add rule > Custom TCP 8080

6. Reboot instance

7. Navigate to

http://your_instance_ip_or_domain:8080

8. Back in the lightsail instance terminal, get the jenkin one-time jenkins password, to unlock jenkins!

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

9. Click install suggested plugins. and that's it!