Install Jenkins 2.x in AWS EC2 Instance (Amazon Linux AMI)

Software to install

Java 8
Jenkins 2.x

Check YUM Updates

sudo su
yum list installed
yum update

Install Java 8

yum install java-1.8.0
yum remove java-1.7.0-openjdk

Install Jenkins 2.x

1 Download Jenkins from the Red Hat Repository

wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat/jenkins.repo

2 Import the verification key using the package manager RPM

rpm --import https://jenkins-ci.org/redhat/jenkins-ci.org.key

3 Install Jenkins with yum command

yum install jenkins

Start Jenkins Service

service jenkins start

Jenkins Paths

1 To change the default port of Jenkins you need to edit the jenkins config file

vim  /etc/sysconfig/jenkins

2 Change the port according your desired configuration (vi commands: “i” for insert mode, “ESC” key to escape the inserting mode, “:wq” for write an quit)

JENKINS_PORT="8081"

Check Jenkins Installation

fuser: to display the process id(PID) of every process using the specified files
```
fuser -v -n tcp 8080
```
netstat: to list out all the network (socket) connections on a system
```
netstat -na | grep 8080
```

Set Auto Start for Jenkins Service

sudo chkconfig --list jenkins
sudo chkconfig jenkins on