Amazon web services Terraform-将多个子网分配给EC2实例

我有2个子网（每个可用区域1个子网）

我想将这2个子网添加到EC2实例：

resource "aws_instance" "this" {
  count                   = "${length(var.instance_names)}"
  ami                     = "${var.ami}"
  instance_type           = "${element(var.instance_type, count.index)}"
  availability_zone       = "${element(var.availability_zones, count.index)}"
  disable_api_termination = "${var.disable_api_termination}"
  key_name                = "${var.key_name}"
  ebs_optimized           = "${var.ebs_optimized}"
  subnet_id="${element(aws_subnet.infrastructure_services.id,count.index)}"

  vpc_security_group_ids=["${aws_security_group.infrastructure_services.id}"]

但是得到：

aws_instance.this[0]: Resource 'aws_subnet.infrastructure_services' not found for variable 'aws_subnet.infrastructure_services.id'
* aws_instance.this[1]: Resource 'aws_subnet.infrastructure_services' not found for variable 'aws_subnet.infrastructure_services.id'

---

列表中缺少

*

splat运算符语法。相反，您应该使用

aws\u subnet.infrastructure\u services.*.id

来引用资源列表

因此，您的实例资源应该如下所示：

resource "aws_instance" "this" {
  count                   = "${length(var.instance_names)}"
  ami                     = "${var.ami}"
  instance_type           = "${element(var.instance_type, count.index)}"
  availability_zone       = "${element(var.availability_zones, count.index)}"
  disable_api_termination = "${var.disable_api_termination}"
  key_name                = "${var.key_name}"
  ebs_optimized           = "${var.ebs_optimized}"
  subnet_id               = "${element(aws_subnet.infrastructure_services.*id, count.index)}"
  vpc_security_group_ids  = ["${aws_security_group.infrastructure_services.id}"]
}

可能还值得注意的是，除非您需要以列表长度的模返回列表，否则您可以使用更简单的

list[index]

语法，而不是

元素（list，index]）

：

resource "aws_instance" "this" {
  count                   = "${length(var.instance_names)}"
  ami                     = "${var.ami}"
  instance_type           = "${element(var.instance_type, count.index)}"
  availability_zone       = "${element(var.availability_zones, count.index)}"
  disable_api_termination = "${var.disable_api_termination}"
  key_name                = "${var.key_name}"
  ebs_optimized           = "${var.ebs_optimized}"
  subnet_id               = "${element(aws_subnet.infrastructure_services.*id, count.index)}"
  vpc_security_group_ids  = ["${aws_security_group.infrastructure_services.id}"]
}

resource "aws_instance" "this" {
  count                   = "${length(var.instance_names)}"
  ami                     = "${var.ami}"
  instance_type           = "${var.instance_type[count.index]}"
  availability_zone       = "${var.availability_zones[count.index])}"
  disable_api_termination = "${var.disable_api_termination}"
  key_name                = "${var.key_name}"
  ebs_optimized           = "${var.ebs_optimized}"
  subnet_id               = "${aws_subnet.infrastructure_services.*id[count.index])}"
  vpc_security_group_ids  = ["${aws_security_group.infrastructure_services.id}"]
}