인프라스트럭처

# Terraform - AWS 인프라 정의
terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 5.0"
    }
  }
  backend "s3" {
    bucket = "myapp-terraform-state"
    key    = "production/terraform.tfstate"
    region = "ap-northeast-2"
  }
}

# VPC 네트워크
resource "aws_vpc" "main" {
  cidr_block           = "10.0.0.0/16"
  enable_dns_hostnames = true
  tags = { Name = "main-vpc" }
}

resource "aws_subnet" "public" {
  count                   = 2
  vpc_id                  = aws_vpc.main.id
  cidr_block              = "10.0.${count.index + 1}.0/24"
  availability_zone       = data.aws_availability_zones.available.names[count.index]
  map_public_ip_on_launch = true
  tags = { Name = "public-subnet-${count.index + 1}" }
}

# EC2 인스턴스
resource "aws_instance" "web" {
  count                  = var.instance_count
  ami                    = data.aws_ami.amazon_linux.id
  instance_type          = var.instance_type
  subnet_id              = aws_subnet.public[count.index % 2].id
  vpc_security_group_ids = [aws_security_group.web.id]
  iam_instance_profile   = aws_iam_instance_profile.web.name

  root_block_device {
    volume_size = 20
    volume_type = "gp3"
    encrypted   = true
  }

  tags = {
    Name        = "web-${count.index + 1}"
    Environment = var.environment
  }
}

# RDS 데이터베이스
resource "aws_db_instance" "main" {
  identifier           = "myapp-db"
  engine               = "postgres"
  engine_version       = "15.4"
  instance_class       = "db.t3.medium"
  allocated_storage    = 50
  storage_encrypted    = true
  multi_az             = true
  db_subnet_group_name = aws_db_subnet_group.main.name
  skip_final_snapshot  = false
}