Introduction

In this blog post, we will discuss how to deploy a Flask application on AWS. Flask is a popular Python web framework that allows you to build web applications quickly and easily. AWS (Amazon Web Services) is a cloud computing platform that provides a wide range of services to help you deploy and scale your applications.

Prerequisites

Before we begin, make sure you have the following:

  • A Flask application that you want to deploy
  • An AWS account
  • A basic understanding of how to use the AWS Management Console

Step 1: Create an EC2 Instance

The first step is to create an EC2 (Elastic Compute Cloud) instance on AWS. This will serve as the virtual server for your Flask application. To do this, follow these steps:

  1. Login to the AWS Management Console
  2. Navigate to the EC2 Dashboard
  3. Click on ‘Launch Instance’
  4. Select an Amazon Machine Image (AMI)
  5. Choose an instance type
  6. Configure instance details
  7. Add storage
  8. Add tags
  9. Configure security group
  10. Review and launch the instance

Step 2: Connect to the EC2 Instance

Once the EC2 instance is up and running, you need to connect to it using SSH. To do this, follow these steps:

  1. Locate the public IP address of your EC2 instance
  2. Open your terminal and run the following command: ssh username@server-ip-address
  3. You should now be connected to your EC2 instance

Step 3: Install Flask and Dependencies

Now that you are connected to your EC2 instance, you need to install Flask and its dependencies. To do this, follow these steps:

  1. Update the package list by running the following command: sudo apt update
  2. Install pip, the package installer for Python, by running the following command: sudo apt install python3-pip
  3. Install Flask by running the following command: pip3 install flask
  4. Install any other dependencies that your Flask application may require

Step 4: Deploy the Flask Application

Now that you have installed Flask and its dependencies, it’s time to deploy your Flask application. To do this, follow these steps:

  1. Copy your Flask application files to the EC2 instance
  2. Navigate to the directory where your Flask application files are located
  3. Run the Flask application by running the following command: python3 app.py
  4. Your Flask application should now be running on the EC2 instance

Step 5: Configure the Security Group

By default, the security group associated with your EC2 instance may not allow incoming traffic on the port that your Flask application is running on. To allow incoming traffic, follow these steps:

  1. Login to the AWS Management Console
  2. Navigate to the EC2 Dashboard
  3. Click on ‘Security Groups’ in the left sidebar
  4. Select the security group associated with your EC2 instance
  5. Click on the ‘Inbound Rules’ tab
  6. Add a new rule to allow incoming traffic on the port that your Flask application is running on
  7. Save the changes

Conclusion

Deploying a Flask application on AWS is a great way to host and scale your web applications. By following the steps outlined in this blog post, you can easily deploy your Flask application on AWS and make it accessible to users around the world.