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Jenkins Installation.MD

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Install Jenkins on AWS EC2

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 RHEL 7.x Instance Get help here
    • 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 latest version from http://openjdk.java.net/install/

yum install java-1.8*
#yum -y install java-1.8.0-openjdk

Confirm Java Version

Lets install java and set the java home

java -version
find /usr/lib/jvm/java-1.8* | head -n 3
#JAVA_HOME=
export JAVA_HOME
PATH=$PATH:$JAVA_HOME
# To set it permanently update your .bash_profile
source ~/.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 setup the repo so that we can update it easily in future. Get latest version of jenkins from https://pkg.jenkins.io/redhat-stable/

yum -y install wget
wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo
rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key
yum -y install jenkins

Start Jenkins

# Start jenkins service
systemctl start jenkins

# Setup Jenkins to start at boot,
systemctl enable jenkins

Accessing 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; We can do it later
  • Change admin password
    • Admin > Configure > Password
  • Configure java path
    • Manage Jenkins > Global Tool Configuration > JDK
  • Create another admin user id

Test Jenkins Jobs

  1. Create “new item”
  2. Enter an item name – My-First-Project
    • Chose Freestyle project
  3. Under Build section Execute shell : echo "Welcome to Jenkins Demo"
  4. Save your job
  5. Build job
  6. Check "console output"