Deploying Flask App on AWS Elastic Beanstalk with Terraform

Overview

This project uses Terraform to deploy a Flask application to AWS Elastic Beanstalk. It provisions the necessary infrastructure, including:

✅ VPC, Subnet, Internet Gateway
✅ Security Group for Beanstalk
✅ S3 Bucket for Flask app ZIP
✅ IAM Role & Instance Profile for Beanstalk
✅ Elastic Beanstalk Application & Environment
✅ Application Version linked to S3 ZIP

Architecture

• A Flask app is packaged into a .zip file and uploaded to an S3 bucket.
• Terraform provisions an Elastic Beanstalk environment to deploy the Flask app.
• The app is accessible via an auto-generated AWS Beanstalk URL.

Prerequisites

Ensure you have the following installed:

• Terraform
• AWS CLI (configured with credentials)
• Python 3+
• Flask (if you want to test locally)

Setup & Deployment

1️⃣ Clone the Repository

2️⃣ Package the Flask App

Ensure flask-app.zip is present in your working directory:

zip -r flask-app.zip .ebextensions/ static/ requirements.txt application.py

3️⃣ Initialize Terraform

terraform init

4️⃣ Apply Terraform Configuration

This will provision AWS resources and deploy the Flask app:

terraform apply -auto-approve

5️⃣ Get the Beanstalk URL

Once deployment is complete, navigate to AWS Console → Elastic Beanstalk → flask-app-env and find the Application URL.

6️⃣ Visit the App 🎉

Open your browser and go to:

http://<your-beanstalk-url>

Cleanup

To remove all resources:

terraform destroy -auto-approve

⚠️ This permanently deletes all AWS resources.

Files Structure

├── main.tf            # Terraform configuration
├── flask-app.zip      # Flask app archive (uploaded to S3)
├── app.py             # Flask application
├── static/
│   └── index.html     # Vue.js frontend
├── .ebextensions/
│   └── python.config  # Elastic Beanstalk configuration
├── README.md          # Documentation (this file)
├── requirements.txt   # required modules

Author

💡 Created by Anton Aks - Feel free to contribute and improve!

---

Happy coding! 🚀