module "vpc" {
  source  = "terraform-aws-modules/vpc/aws"
  name                 = "main_vpc"
  cidr                 = "10.1.0.0/16"
  azs                  = ["xxxxxxx"]
  private_subnets      = ["10.1.1.0/24"]
  public_subnets       = ["10.1.0.0/24"]
  enable_dns_hostnames = true
}


module "nat" {
  # https://registry.terraform.io/modules/int128/nat-instance/aws/latest?tab=inputs
  source  = "int128/nat-instance/aws"
  name = "nat"
  vpc_id                      = module.vpc.vpc_id
  public_subnet               = module.vpc.public_subnets[0]
  private_subnets_cidr_blocks = module.vpc.private_subnets_cidr_blocks
  private_route_table_ids     = module.vpc.private_route_table_ids
  enabled = true
}

resource "aws_eip" "nat" {
  network_interface = module.nat.eni_id
  tags = {
    "Name" = "nat-instance"
  }
}