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terraform - ASG 和 EFS 等其他资源上的 terraform 动态标签

问题描述

我想在aws_autoscaling_group资源上获取动态标签，但与文档中的示例不同，我现在还不知道会有多少标签，并且这些标签必须与其他资源共享。在下面的示例中，这将是 EFS，但基本上所有其他 aws 资源都会受到影响。

所以设置了以下几行：

variable "tags" {
  type = "map"

  default = {
    tag1 = "value1"
    tag2 = "value2"
  }
}

resource "aws_autoscaling_group" "asg" {
  name                 = "test-asg"
  launch_configuration = "test-lc"
  min_size             = 1
  max_size             = 1
  min_elb_capacity     = 1
  vpc_zone_identifier  = ["subnet-1234"]
  tags                 = <code_here>
}

resource "aws_efs_file_system" "foo" {
  creation_token = "my-product"
  tags           = "${var.tags}"
}

我想出了一个支持x动态标签的解决方案。不幸的是，它使用虚拟标签来填充未提供的标签，直到x.

data "template_file" "test" {
  count    = "9"
  template = "key:@:$${key}:@:value:@:$${value}:@:propagate_at_launch:@:true"

  vars {
    key   = "${element(concat(keys(var.tags), list("unusedtag1", "unusedtag2","unusedtag3","unusedtag4","unusedtag5","unusedtag6","unusedtag7","unusedtag8","unusedtag9")), count.index)}"
    value = "${element(concat(values(var.tags), list("", "","","","","","","","")), count.index)}"
  }
}

locals{
  tag0 = "${split(":@:", data.template_file.test.0.rendered)}"
  tag1 = "${split(":@:", data.template_file.test.1.rendered)}"
  tag2 = "${split(":@:", data.template_file.test.2.rendered)}"
  tag3 = "${split(":@:", data.template_file.test.3.rendered)}"
  tag4 = "${split(":@:", data.template_file.test.4.rendered)}"
  tag5 = "${split(":@:", data.template_file.test.5.rendered)}"
  tag6 = "${split(":@:", data.template_file.test.6.rendered)}"
  tag7 = "${split(":@:", data.template_file.test.7.rendered)}"
  tag8 = "${split(":@:", data.template_file.test.8.rendered)}"

  tags = "${list(
          map(local.tag0[0],local.tag0[1],local.tag0[2],local.tag0[3],local.tag0[4],local.tag0[5]),
          map(local.tag1[0],local.tag1[1],local.tag1[2],local.tag1[3],local.tag1[4],local.tag1[5]),
          map(local.tag2[0],local.tag2[1],local.tag2[2],local.tag2[3],local.tag2[4],local.tag2[5]),
          map(local.tag3[0],local.tag3[1],local.tag3[2],local.tag3[3],local.tag3[4],local.tag3[5]),
          map(local.tag4[0],local.tag4[1],local.tag4[2],local.tag4[3],local.tag4[4],local.tag4[5]),
          map(local.tag5[0],local.tag5[1],local.tag5[2],local.tag5[3],local.tag5[4],local.tag5[5]),
          map(local.tag6[0],local.tag6[1],local.tag6[2],local.tag6[3],local.tag6[4],local.tag6[5]),
          map(local.tag7[0],local.tag7[1],local.tag7[2],local.tag7[3],local.tag7[4],local.tag7[5]),
          map(local.tag8[0],local.tag8[1],local.tag8[2],local.tag8[3],local.tag8[4],local.tag8[5]),
          )}"
}

通过 ASG 中的此代码，我可以使用tags = ["${local.tags}"]. 使用示例输入，资源被标记为

tag1 = value1
tag2 = value2
unusedtag1 = 
unusedtag2 = 
unusedtag3 = 
unusedtag4 = 
unusedtag5 =
unusedtag6 = 
unusedtag7 =

我想有一个解决方案是

因此，解决方案必须先获取现有标签并为其添加propagate_at_launch密钥，然后再将其添加到 ASG。

标签： terraformterraform-provider-aws

解决方案

您现在可以使用 Terraform 的dynamic "tag"块来完成此操作。首先，创建一个数据资源：

data "aws_default_tags" "tags" {}

下一个。将此数据资源插入您的目标资源（如aws_autoscaling_group：

resource "aws_autoscaling_group" "foo" {
  desired_capacity          = 1
  force_delete              = true
  health_check_grace_period = 300
  launch_configuration = aws_launch_configuration.foo.name
  max_size             = 4
  min_size             = 1
  name                 = var.resource_name
  placement_group      = aws_placement_group.foo.name
  vpc_zone_identifier  = [aws_subnet.private[*].id]

  dynamic "tag" {
    for_each = data.aws_default_tags.tags.tags
    content {
      key                 = tag.key
      value               = tag.value
      propagate_at_launch = true
    }
  }

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