Terraform ec2-instance模块资源'aws_instance.this'没有变量'aws_instance.this。*的属性”。

Question

我正在尝试设置具有公共子网，2个私有子网和多个EC2实例的完整VPC。我将注册表模块用于所有内容（到目前为止，VPC，安全组和EC2实例）。 VPC module有效，但是EC2 module抛出标题中提到的错误。

这是我的VPC模块（变量在其他地方定义）：

module "vpc" {
  source  = "terraform-aws-modules/vpc/aws"
  version = "1.49.0"

  name = "terraform-vpc"
  cidr = "${var.vpc_ip_range}"

  tags = {
    Name = "terraform-VPC",
  }

  enable_s3_endpoint       = false
  enable_dynamodb_endpoint = false
  enable_nat_gateway       = true

  azs                 = ["us-west-2a", "us-west-2b"]
  private_subnets     = ["${var.small_pvt_subnet}", "${var.large_pvt_subnet}"]
  public_subnets      = ["${var.pub_subnet}"]
  database_subnets    = ["${var.large_pvt_subnet}"]
  elasticache_subnets = ["${var.large_pvt_subnet}"]
}

这是我的ec2-instance模块：

module "DPM-instance" {
  source  = "terraform-aws-modules/ec2-instance/aws"
  version = "1.0.1"

  # insert the 4 required variables here
  name = "DPM"
  ami = <some AMI ID>
  instance_type = "t3.nano"
  vpc_security_group_ids = ["${module.DPM-security-group.this_security_group_id}"]
  tags = {
    Terraform = "true"
    Name = "DPM"
  }
}

我是Terraform的新手，所以我们将不胜感激。