/Jenkins-Installation

Primary LanguageGroovy

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 Instance
    • With Internet Access
    • Security Group with Port 8080 open for internet
  2. Java 11 JDK

Install Java

  1. We will be using open java for our demo, Get the latest version from http://openjdk.java.net/install/

    sudo yum install java-11-amazon-corretto-devel -y

  2. Confirm Java Version and set the java home

    java -version
find /usr/lib/jvm/java-11-* | head -n 3
JAVA_HOME=/usr/lib/jvm/java-11-amazon-corretto.x86_64
export JAVA_HOME
PATH=$PATH:$JAVA_HOME
 # To set it permanently update your .bash_profile
vi ~/.bash_profile
source .bash_profile

    The output should be something like this,

    [root@jenkins-server ~]# java -version
openjdk version "11.0.19" 2023-04-18 LTS
OpenJDK Runtime Environment Corretto-11.0.19.7.1 (build 11.0.19+7-LTS)
OpenJDK 64-Bit Server VM Corretto-11.0.19.7.1 (build 11.0.19+7-LTS, 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.

  1. Get the latest version of jenkins from https://pkg.jenkins.io/redhat-stable/ and install

    sudo 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
sudo 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 the Build section Execute shell: echo "Welcome to Jenkins Demo"
  4. Save your job
  5. Build job
  6. Check "console output"

Full installation script

   sudo yum install java-11-amazon-corretto-devel -y
   sudo yum -y install wget
   sudo wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat-stable/jenkins.repo
   sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io-2023.key
   sudo yum -y install jenkins
   sudo systemctl  start jenkins
   sudo systemctl  enable jenkins
   sudo yum install git -y
   wget https://releases.hashicorp.com/terraform/1.5.6/terraform_1.5.6_linux_amd64.zip
   unzip terraform_1.5.6_linux_amd64.zip
   sudo mv terraform /usr/local/bin/

Add java to jenkins

whereis jvm

Configure Jenkins

  • Go to the Manage jenkins