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Jenkins Setup

1. Windows Installation​

Windows Installer​

Download the .msi installer from Jenkins website and run it.

Jenkins will:

  • Install as Windows Service
  • Start automatically
  • Run on port 8080

Password location:

    C:\Program Files\Jenkins\secrets\initialAdminPassword

2. macOS Installation​

Install Jenkins LTS​

brew install jenkins-lts

Start Jenkins​

brew services start jenkins-lts

Access:

    http://localhost:8080

Password:

cat ~/.jenkins/secrets/initialAdminPassword

3. Linux Installation​

Ubuntu / Debian (Recommended for Servers)​

Install Java​

sudo apt update
sudo apt install openjdk-17-jdk -y

Add Jenkins Repository​

sudo wget -O /etc/apt/keyrings/jenkins-keyring.asc \
  https://pkg.jenkins.io/debian-stable/jenkins.io-2026.key

echo "deb [signed-by=/etc/apt/keyrings/jenkins-keyring.asc]" \
  https://pkg.jenkins.io/debian-stable binary/ | sudo tee \
  /etc/apt/sources.list.d/jenkins.list > /dev/null

Install Jenkins​

sudo apt update
sudo apt install jenkins -y

Start Jenkins​

sudo systemctl start jenkins
sudo systemctl enable jenkins

Access:

    http://<server-ip>:8080

Password:

sudo cat /var/lib/jenkins/secrets/initialAdminPassword

Creating a Pipeline Job in Jenkins

This section explains step-by-step how to create a Pipeline Job in Jenkins.

Step 1: Login to Jenkins​

Open your browser:

    http://localhost:8080

Login using your admin credentials.

Step 2: Create New Item​

  1. Click New Item (left menu)
  2. Enter a name (Example: sample-pipeline)
  3. Select Pipeline
  4. Click OK

Step 3: Configure Pipeline​

Scroll to the Pipeline section.

You will see:

Definition:

  • Pipeline script (write script directly in Jenkins)
  • Pipeline script from SCM (recommended for production)

Option A: Pipeline Script (Basic Example)​

Select:

    Definition → Pipeline script

Paste this example:

pipeline {
    agent any

    stages {
        stage('Build') {
            steps {
                echo 'Building the application'
            }
        }

        stage('Test') {
            steps {
                echo 'Running tests'
            }
        }

        stage('Deploy') {
            steps {
                echo 'Deploying application'
            }
        }
    }
}

Click Save.

Step 4: Build the Pipeline​

Click:

    Build Now

You can view progress in:

    Console Output
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