Jenkins is a self-contained Java-based program, ready to run out-of-the-box, with packages for Windows, Mac OS X and other Unix-like operating systems. As an extensible automation server, Jenkins can be used as a simple CI server or turned into the continuous delivery hub for any project.
Prerequisites
1. EC2 Instance
With Internet Access
Security Group with Port `8080` open for internet
2. Java v1.8.x
Install Java
We will be using open java for our demo, Get the latest version from
http://openjdk.java.net/install/
> yum install java-1.8*
> yum -y install java-1.8.0-openjdk-develConfirm Java Version and set the java home
> java -version
> find /usr/lib/jvm/java-1.8* | head -n 3
> JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-
> export JAVA_HOME
> PATH=$PATH:$JAVA_HOME
# To set it permanently update your .bash_profile
> vi ~/.bash_profile
The output should be something like this
[root@~]# java -version
openjdk version "1.8.0_151"
OpenJDK Runtime Environment (build 1.8.0_151-b12)
OpenJDK 64-Bit Server VM (build 25.151-b12, mixed mode)Install Jenkins
You can install jenkins using the rpm or by setting up the repo. We will set up the repo so that we can update it easily in the future.
Get the latest version of jenkins from,
https://pkg.jenkins.io/redhat-stable/
and install
> yum -y install wget
> sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo
> sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key
> yum -y install jenkinsStart Jenkins
# Start jenkins service
> service jenkins start
# Setup Jenkins to start at boot,
> chkconfig jenkins onAccessing Jenkins
By default jenkins runs at port `8080`, You can access jenkins at
http://YOUR-SERVER-PUBLIC-IP:8080
Configure Jenkins
– The default Username is `admin`
– Grab the default password
– Password Location:`/var/lib/jenkins/secrets/initialAdminPassword`
– `Skip` Plugin Installation;
– Change admin password
– `Admin` > `Configure` > `Password`
– Configure `java` path
– `Manage Jenkins` > `Global Tool Configuration` > `JDK`
– Create another admin user id
