ASG上的terraform动态标签和EFS等其他资源

我想在aws_autoscaling_group资源上获得动态标签，但与文档中的示例不同，我现在还没有多少，标签 must be shared with other resources . 在下面的示例中，这将是EFS，但基本上所有其他aws资源都将受到影响 .

所以设置以下行：

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}"
}

我想出了一个支持最多 x 动态标签的解决方案 . 不幸的是，它使用虚拟标签填充未提供的标签，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]),
          )}"
}

在ASG中使用此代码，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

• 动态

• 不使用不必要的标签

• works with ASG and other AWS resources at the same time

• 只是将ASG上的所有标签传播到已启动的实例： propagate_on_launch = true

因此，解决方案必须先获取现有标签，然后在将其添加到ASG之前添加 propagate_at_launch 键 .