Jenkins in the CI/CD ecosystem - Mini Project: Build & Apply

Jenkins in the CI/CD ecosystem

📖 Scenario: You are working as a DevOps engineer in a small software team. Your team wants to automate the process of building and testing their code whenever a developer makes changes. You will use Jenkins, a popular automation tool, to create a simple pipeline that runs a build and test job automatically.

🎯 Goal: Build a basic Jenkins pipeline script that defines a job with stages for building and testing code. This pipeline will help your team automate their software delivery process.

📋 What You'll Learn

Create a Jenkins pipeline script with a pipeline block

Define an agent to run the pipeline

Add two stages: Build and Test

In the Build stage, run a shell command to print 'Building the project...'

In the Test stage, run a shell command to print 'Running tests...'

💡 Why This Matters

🌍 Real World

Jenkins pipelines automate software builds, tests, and deployments, saving time and reducing errors.

💼 Career

Understanding Jenkins pipelines is essential for DevOps roles to implement continuous integration and continuous delivery.

1

Create the basic Jenkins pipeline structure

Write a Jenkins pipeline script starting with pipeline {} and inside it, add an agent any block to specify that the pipeline can run on any available agent.

Jenkins

pipeline {
    agent any
    // Your code here
}

Need a hint?

Start with pipeline {} and add agent any inside it.

2

Add the Build stage

Inside the pipeline block, add a stages block. Then add a stage named Build that runs a shell command echo 'Building the project...' inside a steps block.

Jenkins

pipeline {
    agent any
    stages {
        stage('Build') {
            steps {
                // Your code here
            }
        }
    }
}

Need a hint?

Use stages {} to group stages, then add stage('Build') { steps { sh "echo 'Building the project...'" } }.

3

Add the Test stage

Inside the existing stages block, add another stage named Test. In this stage, add a steps block that runs the shell command echo 'Running tests...'.

Jenkins

pipeline {
    agent any
    stages {
        stage('Build') {
            steps {
                sh "echo 'Building the project...'"
            }
        }
        // Your code here
    }
}

Need a hint?

Add stage('Test') { steps { sh "echo 'Running tests...'" } } inside stages.

4

Print the pipeline script

Print the entire Jenkins pipeline script to verify it is correct. Use println to output the pipeline script as a string.

Jenkins

pipeline {
    agent any
    stages {
        stage('Build') {
            steps {
                sh "echo 'Building the project...'"
            }
        }
        stage('Test') {
            steps {
                sh "echo 'Running tests...'"
            }
        }
    }
}

// Your code here

Need a hint?

Use println with the full pipeline script as a string, including newlines and indentation.