Simple Terraform AWS Example - 3 tier application with:

Architecture

• Application Load Balancer
• Web Servers
  • Autoscaling group
  • Launch template for EC2 Instances
• Database layer
  • RDS MySQL

The image below shows the target architecture.

Initial setup

Terraform and Providers

• Terraform 0.15.0 or higher
• AWS Provider

Variables

• variables.tf file - some of the variables are used at later stages
• terraform.tfvars to populate variables

(up to here : tag initial_setup)

VPC