Automating Node.js CI/CD with Jenkins, GitHub, and SonarQube - Tier 1

In today's fast-paced development environment, continuous integration and continuous deployment (CI/CD) are essential for ensuring code quality and accelerating the release cycle. In this post, I will walk you through setting up a CI/CD pipeline for a Node.js project using Jenkins, GitHub, and SonarQube.

Project Overview

The goal of this project is to automate the process of testing, code quality analysis, and deployment for a Node.js application. We will use Jenkins for the CI/CD pipeline, GitHub for version control, and SonarQube for code quality analysis.

Prerequisites

• A Node.js project stored in a GitHub repository.
• Jenkins and SonarQube installed (using Docker Desktop on Windows OS).
• A hosting platform with a subdomain configured for deployment.

Step-by-Step Guide

1. Setting Up the GitHub Repository:

• Create a private GitHub repository and clone it to your local machine.
• Initialize your Node.js project and push the initial code to the repository.

src/

├── app.js

├── node_modules/

├── package-lock.json

└── package.json

2. Configuring Jenkins:

• Install Jenkins using Docker and access it at https://localhost:8080.
• Create a new freestyle project in Jenkins.
• Configure the project to pull code from your GitHub repository using your credentials.

3. Adding Build Steps in Jenkins:

• Install Dependencies: Add a build step to execute the following command:

npm install

• Run Tests: Add another build step to execute your tests:

npm test

4. Integrating SonarQube:

• Install SonarQube using Docker and access it at https://localhost:9000.
• Create a new project in SonarQube and generate a token.
• In Jenkins, install the SonarQube Scanner plugin and configure it with your SonarQube server details.
• Add a SonarQube analysis build step in Jenkins with the following properties

5. Running the Pipeline:

• Save your Jenkins job configuration and manually trigger a build.
• Jenkins will now automatically pull the latest code from GitHub, install dependencies, run tests, and analyze code quality with SonarQube.

Conclusion

Setting up a CI/CD pipeline with Jenkins, GitHub, and SonarQube streamlines your development workflow, ensures code quality, and speeds up the deployment process. By following these steps, you can automate the repetitive tasks in your development cycle and focus on writing great code.