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Case Study Deploying A Full Stack Mern Application On Aws Ec2 Using

Leo Migdal
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case study deploying a full stack mern application on aws ec2 using

If you’ve ever built a full-stack app and asked yourself: “How do I deploy this professionally in production with DevOps best practices?” This case study walks through exactly how I achieved that — step-by-step — including the challenges, mistakes, and real fixes. Project Overview I built and deployed a production-grade full-stack note-taking application called Notify. The goal: Push code → App auto-deploys to AWS → No manual server changes A comprehensive step-by-step guide to deploying a MERN Stack (MongoDB, Express.js, React.js, Node.js) application on AWS EC2.

This guide covers backend and frontend configuration, MongoDB Atlas setup, and complete deployment. The MERN Stack is a popular JavaScript-based technology stack used for building full-stack web applications. It includes: This stack allows end-to-end development using JavaScript — from the database to the user interface. Below is the high-level architecture of a MERN application deployed on AWS EC2: Before starting deployment, ensure you have:

EC2 stands for Elastic Cloud Computing and is a service that AWS offers for running applications, hosting websites, processing data, and performing other computing operations. We will push our MERN project frontend and backend into two different repositories on GitHub from our local machine. After that, using GitHub actions, we will build a Docker image for both repositories separately. These images will be pushed to DockerHub and saved in two different repositories on DockerHub. On AWS, we will configure a self-hosted runner for both the front end and back end. When our image is pushed to DockerHub, then our AWS self-hosted runner will pull the image from DockerHub.

After this, our application will run on EC2. First, we will deploy the backend, and then, in a similar way, we will deploy the frontend. Hurray! Now you have hosted the MERN stack application on EC2. Here I have my "Book Store," an application developed using the MERN stack. To deploy any MERN stack application, the process is similar.

Login to DockerHub and create two public repositories, one for the frontend and the other for the backend. Also, note the username and repository name that we will need when we write the CICD workflow for our frontend and backend applications. Remember, we have to store our DockerHub username and password in GitHub secrets when we create a repository for our project on GitHub. This repository contains scripts and configuration files for deploying a MERN (MongoDB, Express.js, React.js, Node.js) application on AWS using Terraform for infrastructure provisioning and Ansible for configuration management and deployment automation. AWS Setup: Ensure your AWS CLI is configured and authenticated with your AWS account. Inventory: get Ansible inventory file (inventory.ini) with the IP addresses of your EC2 instances from terrafrom apply cmd executed.

ansible.cfg: Create an Ansible config file (ansible.cfg) This guide provides a comprehensive step-by-step process to deploy a MERN (MongoDB, Express.js, React, Node.js) stack application on an AWS EC2 instance. It includes setting up the EC2 instance, configuring an Elastic IP, installing necessary software, cloning the repository, configuring the backend and frontend, setting up NGINX as a reverse proxy, and troubleshooting common issues. Log in to the AWS Console Access the AWS Management Console at console.aws.amazon.com. Connect to the EC2 instance using the Elastic IP or public DNS: Update the package index and install Node.js:

If the Node.js version differs from your local development environment, install nvm to manage versions: Deploying a full-stack MERN application involves multiple components, but leveraging tools like Docker, Jenkins, and Terraform simplifies the process. Here’s a step-by-step guide to deploy a MERN stack application on AWS EC2, complete with infrastructure automation, CI/CD pipeline, and Nginx reverse proxy. Before diving into the deployment process, ensure you have the following ready: Create a Terraform file that provisions an EC2 instance pre-configured with necessary tools like: Once the EC2 instance is running, SSH into it and clone the MERN app repository:

Push these files back to GitHub for Jenkins to access.

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