Terraform Infra

Overview

This project provisions AWS infrastructure using Terraform, enabling a consistent and repeatable setup for compute, networking, and container registry.

The goal is to define infrastructure as code so environments can be created, updated, and managed without manual configuration.

Stack

• Terraform

• Amazon EC2

• Amazon VPC

• Amazon ECR

• AWS Security Groups

Architecture

VPC → Subnet → Internet Gateway → EC2 → Security Group → ECR

Terraform Configuration

Provider

provider "aws" {
  region = "ap-south-1"
}

VPC

resource "aws_vpc" "main" {
  cidr_block = "10.0.0.0/16"
}

Subnet

resource "aws_subnet" "public" {
  vpc_id            = aws_vpc.main.id
  cidr_block        = "10.0.1.0/24"
  map_public_ip_on_launch = true
}

Internet Gateway

resource "aws_internet_gateway" "gw" {
  vpc_id = aws_vpc.main.id
}

Security Group

resource "aws_security_group" "web" {
  vpc_id = aws_vpc.main.id

  ingress {
    from_port   = 80
    to_port     = 80
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }

  ingress {
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }
}

EC2 Instance

resource "aws_instance" "app" {
  ami           = "ami-0abcdef12345"
  instance_type = "t2.micro"

  subnet_id              = aws_subnet.public.id
  vpc_security_group_ids = [aws_security_group.web.id]

  tags = {
    Name = "devops-app"
  }
}

ECR Repository

resource "aws_ecr_repository" "repo" {
  name = "app-repo"
}

Commands

terraform init
terraform plan
terraform apply

Result

• Infrastructure created using code

• EC2 instance ready for deployment

• Secure networking with VPC and Security Groups

• Container registry available in ECR
  

Key Points

• Infrastructure is version-controlled

• Same setup across environments

• No manual AWS configuration

• Easy to scale and modify
  

Final Note

This setup demonstrates how infrastructure can be managed as code.

It ensures environments are consistent, repeatable, and easy to maintain in production systems.