Making the MultiEnv Infra using Terraform

This project demonstrates how to use Terraform modules to create and manage multiple environments (Development, Production, and Test) with consistent infrastructure but environment-specific configurations.

Project Structure
main.tf - Main configuration file that defines the three environments (dev, prod, test)
mymodule/ - Reusable module that contains the infrastructure components
ec2.tf - EC2 instance configuration with security groups
s3.tf - S3 bucket configuration
rds.tf - RDS database configuration
var.tf - Variable definitions for the module
provider.tf - AWS provider configuration
vpc.tf - VPC, subnet, and networking configuration
env-key and env-key.pub - SSH key pair for EC2 instances
Features
Environment-specific resource naming and tagging
Configurable instance types and counts per environment
Public and private subnet configurations
Shared security group configurations
Consistent infrastructure across environments
VPC networking with public and private subnets
Usage
Each environment can be configured separately in the main.tf file:

module "DEV_ENV" {
  source = "./mymodule"

  my_env                = "dev"
  ami                   = "ami-0734d584b153e1fc9"
  instance_type         = "t2.micro"
  public_instance_count = 1
  private_instance_count = 0
  s3_count              = 1
  rds_instance_count    = 1
  create_public_subnet  = true
  create_private_subnet = false
}
Environment Configuration
Development: 1 public t2.micro instance, 1 S3 bucket, 1 RDS instance
Production: 1 public t2.micro instance, 2 private instances, 2 S3 buckets, 2 RDS instances
Test: 1 public t2.micro instance, 1 private instance, 1 S3 bucket, 1 RDS instance
Networking
The infrastructure includes:

Public subnet with internet access
Private subnet (optional per environment)
Route tables for proper network traffic flow
Security
The infrastructure includes security groups that allow:

SSH access (port 22)
HTTP access (port 80)
HTTPS access (port 443)
Database
RDS MySQL 8.0 instances with configurable count per environment
Storage
S3 buckets with environment-specific naming and configurable count
Prerequisites
Terraform installed
AWS credentials configured
SSH key pair for EC2 instance access

• Code for Infrastructure