Question

努力解决这个问题，下面是我的真实世界的例子，但我想一般的问题是：

如何在模板中创建一组对象，并根据名称标签之类的内容引用ID作为特定对象，以便在另一个资源中使用？

真实世界的例子：

所以我基于作为列表变量提供的子网名称列表动态创建一堆子网

variable "subnet_names" {
description = "subnet list"
default = ["subnet1","subnet2","dmz-a","dmz-b"]
}


resource "aws_subnet" "subnets" {
count = "${length(var.subnet_names)}"  
vpc_id = "${aws_vpc.vpc.id}"
cidr_block = "${cidrsubnet(var.vpc_cidr, 6, count.index)}"
map_public_ip_on_launch = "false"
availability_zone ="${element(slice(data.aws_availability_zones.available.names, 0, 2), count.index)} "
tags = "${merge(var.common_tags, map("Name", "${var.domain_short_name}-${var.subnet_names[count.index]}"))}"
}

这工作正常，但我想说，只将NAT网关连接到某些子网，例如让我们说dmz，但我无法弄清楚如何为上面创建的特定子网引用subnet_id ...我想那里必须是一种构建新子网地图{subnet_ID：tags.name}的方法，并通过查找tags.name选择一个，这将是corp-dmz-a的示例

resource "aws_nat_gateway" "nat" {
allocation_id = "${aws_eip.nat_gw.id}"
subnet_id = ???????????????????????????
tags = "${merge(var.common_tags, map("Name", "${var.vpc_name_prefix}${var.domain_short_name}${var.region_short_name}-NAT" ))}"
depends_on = ["aws_internet_gateway.igw","aws_subnet.subnets"]
}

任何有关如何处理此问题的建议都会受到赞赏，我一直在尝试几种不同的方法，但我认为我缺少一些基本的理解，也许甚至更简单的插值方法和我缺少的其他功能< / p>

Answer 1

管理提出似乎有效的解决方案，似乎也是一个非常方便的技术分享，所以我自己回答

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terraform通过标签值引用新资源

1 个答案: