AWS Terraform:通过匹配标签名称中的子字符串来过滤特定子网

问题描述

我有 6 个子网，我想从中过滤出 3 个匹配子字符串 internal 的子网并在 rds 中使用.

I have 6 subnets, I want to filter 3 subnets from them matching substring internal and use in rds.

标签名称有内部词，并希望基于该词进行过滤.

Tag name has internal word and want to filter based on that.

谁能帮帮我?

data "aws_vpc" "vpc_nonprod-sctransportationops-vpc" {
  tags {
    Name = "vpc_nonprod-sctransportationops-vpc"
  }
}
    
data "aws_subnet_ids" "all" {
  vpc_id = "${data.aws_vpc.vpc_nonprod-sctransportationops-vpc.id}"
}
    
output "aws_subnet_ids" {
  value = "${data.aws_subnet_ids.all.ids}"
}
# 6 subnets
# Now look up details for each subnet
     

data "aws_subnet" "filtered_subnets" {
  count = "${length(data.aws_subnet_ids.all.ids)}"
  id    = "${data.aws_subnet_ids.all.ids[count.index]}"

  filter {
    name   = "tag:Name"
    values = ["*internal*"]
  }
}

一些标签名称有 internal 子字符串

Some tag name has internal substring

需要抓取所有标签名有内部子串的子网id

Need to grab all subnet id whose tag name has internal substring

values = ["*"] 返回 6 ids，然而，values = ["any word not work"]或 values = ["*internal*"] 不起作用.

values = ["*"] return 6 ids, however, values = ["any word not work"] or values = ["*internal*"] doesn't work.

以下是错误:

Error: Error refreshing state: 1 error(s) occurred:

* data.aws_subnet.publicb: 3 error(s) occurred:

* data.aws_subnet.publicb[1]: data.aws_subnet.publicb.1: no matching subnet found
* data.aws_subnet.publicb[4]: data.aws_subnet.publicb.4: no matching subnet found
* data.aws_subnet.publicb[0]: data.aws_subnet.publicb.0: no matching subnet found

应该有 6 个，但我只得到 3 个，这意味着应该有部分好的东西和部分坏的东西.

There should be 6 but I am getting only 3, that means there should be partially good things and partially bad things.

这 3 个子网在标签名称中没有 internal 子字符串.

These 3 subnets doesn't have internal substring in tag name.

这意味着它正在解析.aws_subnet_ids 没有过滤选项.

It means it's parsing. aws_subnet_ids doesn't have filter option.

应该有.一场比赛，这很简单，但是，我需要多场比赛.

There should be instead. For one match, it will be simple, however, I need multiple matches.

现在我猜这个错误是因为循环运行了 6 次.

In my guess now the error is because of loops which runs for 6 times.

这是没有过滤器的相同输出:

Here is same output without filter:

                  "data.aws_subnet.filtered_subnets.2": {
                    "type": "aws_subnet",
                    "depends_on": [
                        "data.aws_subnet_ids.all"
                    ],
                    "primary": {
                        "id": "subnet-14058972",
                        "attributes": {
                            "assign_ipv6_address_on_creation": "false",
                            "availability_zone": "us-west-2a",
                            "cidr_block": "172.18.201.0/29",
                            "default_for_az": "false",
                            "id": "subnet-14038772",
                            "map_public_ip_on_launch": "false",
                            "state": "available",
                            "tags.%": "4",
                            "tags.Designation": "internal",
                            "tags.Name": "subnet_nonprod-sctransportationops-vpc_internal_az2",
                            "tags.Permissions": "f00000",
                            "tags.PhysicalLocation": "us-west-2a",
                            "vpc_id": "vpc-a47k07c2"
                        },
                        "meta": {},
                        "tainted": false
                    },
                    "deposed": [],
                    "provider": "provider.aws"
                }

推荐答案

aws_subnet_ids 有这个功能，但是方式不同.这里解决了我的问题:

aws_subnet_ids has this feature, however, different way. Here it solved my problem:

data "aws_subnet_ids" "all" {
  vpc_id = "${data.aws_vpc.vpc_nonprod-sctransportationops-vpc.id}"

  tags = {
    Name = "*internal*"
  }
}

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