AWS - Highly Available Environment with Elastic Compute Cloud (EC2)

This project provides Terraform configuration to provision a high-availability architecture on AWS. The architecture is designed to ensure scalability, security, and robustness.

Architecture Overview

The architecture includes the following AWS resources:

Network

• VPC: A Virtual Private Cloud to provide a logically isolated section of the AWS cloud.
• Subnets:
  • 2 Public Subnets across 2 Availability Zones (AZs) for the Load Balancer.
  • 2 Private Subnetsacross 2 Availability Zones (AZs) for EC2 instances.
• Security Groups:
  • Load Balancer SG: Allows internet access to the Load Balancer via an Internet Gateway.
  • Instances SG: Restricts access to instances, only allowing traffic from the Load Balancer SG.

Storage

• S3 Bucket: An S3 bucket with versioning enabled for storing and serving a static web page.

Compute

• Launch Template: Utilize a pre-configured AMI (Ubuntu 22.04 LTS) plus a custom init script (user_data) for application deployment.

• Auto Scaling Group (ASG): Configured with the launch template to maintain instance health and load within the private subnets.

• Application Load Balancer (ALB): Setup across the public subnets, routing traffic to the ASG.

Sizing

• Desired Capacity: 2 Instances
• Minimum Capacity: 1 Instance
• Maximum Capacity: 2 Instances

Usage Instructions

1. Prerequisites:

   • Docker CLI
   • AWS CLI (properly authenticated)
   • Terraform
   • Valid TMIDb API key. You can get one (for free) on their website -> https://developer.themoviedb.org/reference/intro/getting-started

2. Clone the Repository:

   git clone [email protected]:m-marcal/infnet-aws-ha-ec2.git

3. Terraform Initialization:

   terraform init 

4. Deployment:

   terraform apply # make sure to pass a valid API key from TMDB

5. Check if it works

   • Make sure to wait a few moments since it takes some time to provision all ressources

   terraform output # get the load balancer dns
   curl http://{ALB_DNS}