如何将子网列表传递给“subnet”属性？

Question

我正在重写我的子网代码，使其更加灵活，并由参数驱动：

resource "aws_subnet" "private" {
  count             = "${var.az_count}"
  cidr_block        = "${cidrsubnet(aws_vpc.ecs.cidr_block, 8, count.index)}"
  availability_zone = "${data.aws_availability_zones.available.names[count.index]}"
  vpc_id            = "${aws_vpc.ecs.id}"
}

这是将子网传递给

resource "aws_ecs_service" "service" {
    network_configuration {
        subnets = [ "${aws_subnet.subnet1.id}", "${aws_subnet.subnet2.id}" ]
        ...
}

如何将子网I从aws_subnet.private传递到subnets属性？

我试过了

subnets = ${aws_subnet.priate[*].id}

但是有一个错误：

 Expected the start of an expression, but found an invalid expression token

Answer 1

首先，您可以删除${}，除非您在进行插值。去掉这些东西，你就有了更好的可读性：

resource "aws_subnet" "private" {
  count             = var.az_count
  cidr_block        = cidrsubnet(aws_vpc.ecs.cidr_block, 8, count.index)
  availability_zone = data.aws_availability_zones.available.names[count.index]
  vpc_id            = aws_vpc.ecs.id
}

您使用splat的参考语法是正确的，并且您的拼写错误。试试这个：

subnets = aws_subnet.private[*].id

图片参考：https://www.terraform.io/docs/configuration/expressions.html#splat-expressions