amazon-web-services - 如何获取资源逻辑id cloudformation模板？

Question

是否可以像我们使用 "Ref": "ologicalName" 那样在其内部获取资源的逻辑 ID。我只想动态获取其自己的属性部分中的资源逻辑 ID(此处为 Instance1)。到目前为止，我必须对资源名称进行硬编码。

{
  "AWSTemplateFormatVersion": "2010-09-09",
    "Mappings": {
        "Para" : {
          "Layer"     : { "Instance1" : "Testing", "Instance2" : "Staging", "Instance3" : "Production" }
        }
    },  
    "Resources": {
        "Instance1": {
          "Type": "AWS::EC2::Instance",
          "Properties": {
            "ImageId": "ami-5fb8c835",
            "Tags": [
              { "Key": "Name", "Value": { "Fn::FindInMap" : [ "Para", "Name", "Instance1" ]} }
                ]
            }
        },
        "Instance2": {
          "Type": "AWS::EC2::Instance",
          "Properties": {
            "ImageId": "ami-5fb8c835",
            "Tags": [
              { "Key": "Name", "Value": { "Fn::FindInMap" : [ "Para", "Name", "Instance2" ]} }
                ]
            }
        }
    }

我只想获取键、值标记行中的资源名称(例如 Instance1 或实例 2)。

Answer 1

无法在自定义标记中检索逻辑名称本身，但 CloudFormation 会自动使用 aws:cloudformation:ological-id 标记来标记每个实例。

In addition to any tags you define, AWS CloudFormation automatically creates the following stack-level tags with the prefix aws::

• aws:cloudformation:logical-id
• aws:cloudformation:stack-id
• aws:cloudformation:stack-name

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-resource-tags.html