Terraform — Environments (dev and prod) with VPC + EKS

This project contains infrastructure defined using Terraform, organized into two independent environments: dev and prod. Each environment creates its own VPC and EKS cluster.

Project Structure

.
├── .gitignore
├── README.md
└── envs
    ├── dev
    │   ├── backend.tf
    │   ├── locals.tf
    │   ├── main.tf
    │   ├── terraform.tfvars
    │   └── variables.tf
    └── prod
        ├── backend.tf
        ├── locals.tf
        ├── main.tf
        ├── terraform.tfvars
        └── variables.tf

Environments

Each folder under envs/ represents an isolated Terraform environment:

dev/ → Development infrastructure

prod/ → Production infrastructure

Authentication

Generate AWS credentials and export them as variables

export AWS_ACCESS_KEY_ID="access_key"
export AWS_SECRET_ACCESS_KEY="secret_key"
export AWS_DEFAULT_REGION="us-east-1"

Backend Configuration

The backend.tf file in each environment contains a placeholder bucket name for storing the Terraform state.

You must replace the placeholder with your actual bucket:

terraform {
  backend "s3" {
    bucket = "<YourBucketName>-terraform-tfstate"
    key    = "terraform.tfstate"
    region = "us-east-1"
  }
}

How to Use

Go into the environment you want to deploy (dev or prod):

1. Initialize Terraform

terraform init --upgrade

2. Validate configuration

terraform validate

3. Check code formatting

terraform fmt -check -diff

4. Preview execution plan

terraform plan

5. Apply changes

terraform apply