Installing Jenkins on Ubuntu

create an instance in AWS

update your instance:

sudo apt-get update

install java: sudo apt install openjdk-11-jre

To check the version of java on your system, use the following command:

java -version

Step 1 — Installing Jenkins curl -fsSL https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo tee
/usr/share/keyrings/jenkins-keyring.asc > /dev/null

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

sudo apt-get update sudo apt-get install jenkins

Step 2 — Starting Jenkins

now that Jenkins is installed, start it by using systemctl:

sudo systemctl start jenkins.service

Since systemctl doesn’t display status output, we’ll use the status command to verify that Jenkins started successfully:

sudo systemctl status jenkins

Note:Open port 8080 in the inbound traffic rules as show below.

EC2 > Instances > Click on In the bottom tabs -> Click on Security Security groups Add inbound traffic rules as shown in the image (you can just allow TCP 8080 as well, in my case, I allowed All traffic).

go to your terminal

sudo cat /var/lib/jenkins/secrets/initialadminpassword copy this password: 9f48d46e86a443d7b5171e45cef18f2d

and paste it here.