Deploy a Python App to AWS with Elastic Beanstalk & Terraform

Mon, 01 Jan 0001 00:00:00 +0000

This example shows how to build and deploy a simple Python application using AWS Elastic Beanstalk for managed hosting and Terraform for infrastructure as code. The deploy.sh script automates the application packaging and deployment process.

Project Structure

Here’s a quick overview of the project’s key components:

app/: Contains the Python application, main.py, along with Procfile for defining the web server, and requirements.txt for Python dependencies.
terraform/: Holds all the Terraform configuration files (.tf) that define the AWS infrastructure:
- main.tf: Defines the core AWS resources like the S3 bucket for application versions, IAM roles for Elastic Beanstalk, and the Elastic Beanstalk application and environment themselves.
- variables.tf: Declares input variables for customizability (e.g., AWS region, instance type).
- outputs.tf: Exports important values like the S3 bucket name and the Elastic Beanstalk environment URL.
deploy.sh: A shell script that orchestrates the deployment process:
- Reads outputs from Terraform to get dynamic values.
- Zips the app/ directory.
- Uploads the zipped application to the designated S3 bucket.
- Creates a new Elastic Beanstalk application version.
- Updates the Elastic Beanstalk environment to use the new version.

How It Works

First, Terraform provisions all necessary AWS resources for Elastic Beanstalk. Then, the deploy.sh script automates the rest: it fetches deployment details from Terraform, zips your Python application, uploads it to S3, and finally, updates your Elastic Beanstalk environment with this new application version.

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Deploy a Python App to AWS with Elastic Beanstalk & Terraform

Project Structure

How It Works