Terraform Modules

Vibe Prompt

「幫我建立一個 Terraform Module 用於建立標準的 VPC 架構，包含公有/私有子網、NAT Gateway。」

# modules/vpc/main.tf
variable "vpc_cidr" {}
variable "public_subnets" { type = list(string) }
variable "private_subnets" { type = list(string) }
variable "environment" {}

resource "aws_vpc" "main" {
  cidr_block = var.vpc_cidr
  tags = { Name = "vpc-${var.environment}" }
}

resource "aws_subnet" "public" {
  count = length(var.public_subnets)
  vpc_id = aws_vpc.main.id
  cidr_block = var.public_subnets[count.index]
  map_public_ip_on_launch = true
  tags = { Name = "public-${var.environment}-${count.index}" }
}

resource "aws_subnet" "private" {
  count = length(var.private_subnets)
  vpc_id = aws_vpc.main.id
  cidr_block = var.private_subnets[count.index]
  tags = { Name = "private-${var.environment}-${count.index}" }
}

resource "aws_internet_gateway" "igw" {
  vpc_id = aws_vpc.main.id
  tags = { Name = "igw-${var.environment}" }
}

output "vpc_id" { value = aws_vpc.main.id }
output "public_subnet_ids" { value = aws_subnet.public[*].id }
output "private_subnet_ids" { value = aws_subnet.private[*].id }

使用 Module

module "vpc" {
  source = "./modules/vpc"
  
  vpc_cidr       = "10.0.0.0/16"
  public_subnets = ["10.0.1.0/24", "10.0.2.0/24"]
  private_subnets = ["10.0.10.0/24", "10.0.20.0/24"]
  environment    = "production"
}

output "vpc_id" { value = module.vpc.vpc_id }