Run Maven project from Jenkins and publish the war file on Amazon S3

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.

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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=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64

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"

Next Step

• Configure Users & Groups in Jenkins
• Secure your Jenkins Server
• Jenkins Plugin Installation
• Jenkins Master-Slave Configuration
• Setup Jenkins to run inside Tomcat Server

Create a Jenkins Pipeline

def workspace;

node

{

stage('Checkout')

{

checkout([$class: 'GitSCM', branches: [[name: '*/master']], doGenerateSubmoduleConfigurations: false, extensions: [], submoduleCfg: [], userRemoteConfigs: [[credentialsId: '0e58c990-80af-43ea-9f55-85c176bba12b', url: 'https://github.com/rkidambi11/maven.git']]])

workspace =pwd()

}

stage('Static Code Analysis')

{

echo "Static Code Analysis"

}

stage('Build')

{

echo "Build the code"

}

stage('Unit Testing')

{

echo "Unit Testing"

}

stage ('Delivery')

{

echo "Devliver the Code"

}

}

node {

stage('scm checkout for api test'){

git credentialsId: '2bf8a43e-4698-4cd4-a5b5-4109e16794b9', url: 'https://github.com/rkidambi11/maven.git'

}

stage ('maven package'){

echo " API package will going to start"

def mvnHome=tool name: 'M3', type: 'maven'

sh "'${mvnHome}/bin/mvn' -Dmaven.test.failure.ignore clean package"

}

stage('Test') {

//Perform test

echo 'Execute the script'

def mvnHome=tool name: 'M3', type: 'maven'

sh "'${mvnHome}/bin/mvn' -Dmaven.test.failure.ignore test"

}

stage('Results') {

junit '**/target/surefire-reports/TEST-*.xml'

archive 'target/*.jar'

}

}