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MERN Deployment in AWS

Learn how to deploy a MERN application in AWS with this step-by-step guide

Inteliny Engineering

Principal Architect

Overview & Architecture Scope

Are you looking to deploy your MERN application in AWS? This guide covers the step-by-step process of deploying a MERN application in AWS, including setting up the necessary infrastructure, configuring the application, and ensuring security and scalability. By the end of this guide, you will have a fully functional MERN application deployed in AWS. This guide is intended for intermediate developers who have experience with MERN applications and AWS, but may not have experience with deployment.

Prerequisites & System Requirements

Ensure your development workstation or staging server fulfills the following prerequisites before initiating commands:

Node.js v18.0+ runtime environment
MongoDB v6.0+ database cluster
Active AWS or Cloudflare account with DNS access
Linux Ubuntu 22.04 LTS server instance
Basic knowledge of CLI bash & Git workflow

Target System Architecture Diagram

Browser
NGINX
Node / Express
MongoDB / Redis

Interactive Execution Checklist

0/3 Completed

Step-by-Step Implementation Guide

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Step 1: Set up an AWS Account and Create a New EC2 Instance

To start, you need to set up an AWS account and create a new EC2 instance. This will provide the necessary infrastructure for your MERN application. Make sure to choose the correct instance type and configure the security group to allow incoming traffic.

Execute Command Terminal:

bash
aws ec2 create-instance --image-id ami-abc123 --instance-type t2.micro
Make sure to replace the image-id with the correct ID for your region
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Step 2: Configure the EC2 Instance for MERN

Next, you need to configure the EC2 instance for your MERN application. This includes installing Node.js, MongoDB, and Express, as well as setting up the necessary environment variables.

Execute Command Terminal:

bash
sudo apt-get update && sudo apt-get install nodejs && sudo apt-get install mongodb
Make sure to use the correct package manager for your instance type
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Step 3: Deploy the MERN Application

Now that the EC2 instance is configured, you can deploy your MERN application. This includes cloning the repository, installing dependencies, and starting the application.

Execute Command Terminal:

bash
git clone https://github.com/your-repo/your-app.git && npm install && npm start
Make sure to replace the repository URL with the correct URL for your application

Pro Tips & Optimizations

Use a load balancer to distribute traffic across multiple instances for scalability and high availability
Use a relational database service like Amazon RDS for MySQL or PostgreSQL for a more managed database experience
Use AWS CloudWatch for monitoring and logging to ensure your application is running smoothly

Common Pitfalls to Avoid

Not configuring the security group correctly, leading to incoming traffic being blocked
Not installing the correct dependencies, leading to application errors
Not monitoring the application, leading to downtime and performance issues
Conclusion & Next Steps

By following this guide, you have successfully deployed your MERN application in AWS. You can now configure the application for production, including setting up a load balancer, configuring security groups, and monitoring performance. With this deployment, you can ensure your application is scalable, secure, and highly available.

Production Best Practices & Hardening

Security Hardening

Disable root SSH access, enforce key-based auth, and enable UFW firewall on ports 80/443.

Memory Management

Set Node.js max-old-space-size to 80% of total RAM to avoid Linux OOM-killer crashes.

Frequently Asked Questions

Yes, all NGINX, Docker, and PM2 deployment steps can be packaged into Infrastructure as Code (IaC) playbooks.

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MERN Deployment in AWS | Inteliny Knowledge Base