Node.js Application with CI/CD GitLab Pipeline on AWS EC2

“Automation is the key to speed and reliability in modern software development.” Table of Contents Introduction Architecture Overview Prerequisites CI/CD Workflow (Step-by-Step) GitLab Pipeline Configuration Deployment Process on AWS EC2 Security Best Practices Interesting Facts & Statistics FAQs Key Takeaways Conclusion 1. Introduction Continuous Integration and Continuous Deployment (CI/CD) is a modern development practice that automates the process of building, testing, and deploying applications. This document explains how to set up a CI/CD pipeline for a Node.js application using GitLab CI/CD and deploy it automatically to an AWS EC2 instance. The goal is to: Automate deployment Reduce manual errors Improve development speed Ensure reliable releases 2. Architecture Overview Backend: Node.js Version Control: GitLab CI/CD Tool: GitLab Pipeline Server: AWS EC2 (Ubuntu) Process Manager: PM2 SSH Authentication: Secure Key-based login High-level Flow: Developer pushes code to GitLab rep