How To Deploy NestJS App To AWS EC2

Introduction to NestJS and AWS EC2

NestJS is a progressive Node.js framework designed for building efficient and scalable server-side applications. When you combine its power with AWS EC2, you unlock the potential to host your application on a reliable cloud infrastructure. In this blog, we will take you through the necessary steps to deploy your NestJS app to AWS EC2, ensuring that your application is up and running in no time.

Setting Up Your AWS EC2 Instance

The first step in your deployment process is setting up an EC2 instance. Sign in to your AWS Management Console and navigate to the EC2 dashboard. From there, you can launch a new instance. Choose an Amazon Machine Image (AMI) that suits your needs, typically an Ubuntu or Amazon Linux 2 instance is recommended for NestJS applications. Configure your instance type based on your expected load and make sure to assign appropriate security groups to allow traffic on the required ports.

Key Considerations When Launching an EC2 Instance

• Select the right AMI for your application.
• Ensure you choose the correct instance type based on your app's requirements.
• Set security groups to allow inbound traffic on necessary ports.
• Allocate an elastic IP to maintain a static IP address.

Connecting to Your EC2 Instance

Once your EC2 instance is running, you need to connect to it. Use SSH to access your server by entering the command in your terminal. Make sure you have your private key file (.pem) ready. This connection will allow you to install the necessary software and deploy your NestJS app.

Installing Node.js and Other Dependencies

Before deploying your NestJS application, ensure that Node.js and npm (Node Package Manager) are installed on your EC2 instance. You can quickly do this by running the appropriate commands to download and install Node.js. Additionally, you may want to install Docker if you plan on containerizing your application, or any other dependencies your NestJS app requires.

Cloning Your NestJS Application

With your instance prepared, you’ll now need to clone your NestJS app from version control. If your project is hosted on GitHub, simply use the Git clone command along with your repository URL. This will bring your project files into your EC2 instance and set the stage for deployment.

Configuring the Environment Variables

NestJS applications often require environment variables for configuration. Before starting your application, create a .env file in the root directory of your project and populate it with necessary configurations like database connection strings, API keys, etc. This ensures that sensitive information remains secured and your app runs smoothly.

Building and Running Your NestJS Application

Now that everything is set up, you can build your application using the NestJS CLI. This process compiles your project and prepares it for production. Once built, you can use a process manager like PM2 to run your application in the background, ensuring it stays alive even when you disconnect from your EC2 instance.

Setting Up a Reverse Proxy with Nginx

To handle incoming traffic efficiently, consider setting up Nginx as a reverse proxy for your NestJS application. This allows Nginx to manage requests and forward them to your Node.js server. Configuration files will need to be created to route traffic correctly, and you’ll also want to ensure Nginx starts automatically with your instance.

Conclusion and Final Thoughts

Deploying your NestJS app to AWS EC2 might seem daunting at first, but by following these steps, you can have your application running in the cloud quickly and efficiently. Remember to monitor your app's performance and set up security best practices. The cloud provides powerful resources at your fingertips, enabling your application to scale with demand.

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