Terraform HCL Architecture Builder

# Provided by Saksham CloudInfrastructures
terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 5.0"
    }
  }
}

provider "aws" {
  region = "us-east-1"
}

resource "aws_vpc" "main" {
  cidr_block           = "10.0.0.0/16"
  enable_dns_hostnames = true
  enable_dns_support   = true

  tags = {
    Name        = "prod-vpc"
    Environment = "Production"
  }
}

resource "aws_subnet" "public" {
  vpc_id                  = aws_vpc.main.id
  cidr_block              = cidrsubnet(aws_vpc.main.cidr_block, 8, 1)
  map_public_ip_on_launch = true
  availability_zone       = "${var.region}a"

  tags = {
    Name = "prod-vpc-public-1a"
  }
}

resource "aws_internet_gateway" "igw" {
  vpc_id = aws_vpc.main.id
  tags = {
    Name = "prod-vpc-igw"
  }
}

resource "aws_security_group" "allow_web" {
  name        = "allow_web_traffic"
  description = "Allow Web inbound traffic"
  vpc_id      = aws_vpc.main.id

  ingress {
    description      = "HTTPS from VPC"
    from_port        = 443
    to_port          = 443
    protocol         = "tcp"
    cidr_blocks      = ["0.0.0.0/0"]
  }

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

  egress {
    from_port        = 0
    to_port          = 0
    protocol         = "-1"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }
}

resource "aws_instance" "web_server" {
  ami           = "ami-0c55b159cbfafe1f0"
  instance_type = "t3.micro"
  subnet_id                   = aws_subnet.public.id
  vpc_security_group_ids      = [aws_security_group.allow_web.id]
  associate_public_ip_address = true

  tags = {
    Name = "web-server"
  }
}