How to install Jenkins on Amazon Linux EC2 Machine
Step 1 : Update your EC2 instance machine
sudo yum update
Step 2 : Add the Jenkins repo using the following command
sudo wget -O /etc/yum.repos.d/jenkins.repo \
https://pkg.jenkins.io/redhat-stable/jenkins.repo
Import a key file from Jenkins-CI to enable installation from the package:
sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key
Step 3 : Now install java on your ec2 instance/machine
sudo amazon-linux-extras install java-openjdk11
Step 4 : Now install epel library
sudo amazon-linux-extras install epel
Step 5 : Now install daemonize library
sudo yum install daemonize -y
Step 6 : Now install jenkins application
sudo yum install jenkins -y
Step 7 : Now reload the service
sudo systemctl daemon-reload
Step 8 : Now start the jenkins server
sudo systemctl start jenkins
Step 9 : Make sure to open 8080 port in jenkins security group.
Step 10 : Now go to your browser and enter <your instance public ip address>:8080 (eg. 156.10.152.10:8080 ) in the new tab.
Step 11 : Now you have to hit below command to get the admin password password
sudo cat /var/lib/jenkins/secrets/initialAdminPassword