EC2 Series→Project 2

Flask App with Load Balancer

Deploy a scalable Flask application with Application Load Balancer and Auto Scaling Groups

Difficulty

Intermediate

Duration

4-6 hours

Cost

~$15-25 (if left running)

Project Overview

Build upon your EC2 knowledge by deploying a scalable Flask web application with an Application Load Balancer. This project introduces advanced networking concepts, auto-scaling, and high availability patterns. We acknowledge this is not the prefered method to create this application, however the manual setup will help to comprehend the services being created.

You'll create a custom VPC, deploy multiple EC2 instances running a Flask application, configure an Application Load Balancer for high availability, and implement Auto Scaling Groups for automatic scaling and healing.

Learning Objectives

Technical Skills

• Deploy Python Flask applications
• Create custom VPC networking
• Configure Application Load Balancers
• Set up Auto Scaling Groups

AWS Concepts

• Custom VPC design and implementation
• Multi-AZ deployment strategies
• Launch Templates and versioning
• Target Groups and health checks

Technologies Used

Flask

Web Framework

ALB

Load Balancer

Auto Scaling

Scaling Groups

VPC

Networking

Prerequisites

• Complete EC2 Project 1 or have equivalent EC2 experience
• AWS CLI configured with appropriate permissions
• Basic understanding of networking concepts (subnets, routing)
• Familiarity with Flask or similar web frameworks
• Understanding of load balancing concepts

Architecture Overview

Project Steps

Create the Flask App Bootstrap Script

Create a Custom VPC with Public and Private Subnets

Create Security Groups for ALB and EC2

Create Application Load Balancer

Create Launch Template

Create Auto Scaling Group

Test Your Application

Monitor and Scale Your Application

Clean Up Resources

← Project 1: EC2 Web Server Project 3: Flask App Deployment with EBS and Terraform →