Amazon Web Services-在CloudFormation中用自己的名称标记S3存储桶 [英] Amazon Web Services - Tag a S3 bucket with its own name within a CloudFormation

问题描述

我目前正在使用AWS CloudFormation，因为我想用自己的名称标记存储桶（以便在成本分配报告中将其成本分开）。

I am currently fighting with AWS CloudFormation because I want to tag a bucket with its own name (in order to separate its costs in my Cost Allocation report).

当我这样做

"MyBucket" : {
        "Type" : "AWS::S3::Bucket",
            "Properties" : {
                "AccessControl" : "Private",
                "Tags" : [
                    { "Key" : "Name", "Value" : { "Ref" : "MyBucket" } }
                ]
        }
    },  

CloudFormation向导引发以下错误：

the CloudFormation wizard throws the following error:

Error
Template validation error: Circular dependency between resources: [MyBucket]

真正的问题是我想保留生成的名称（例如my-bucket-15jsi17g9cby0），使其不通过 BucketName属性指定自定义名称。

The real problem is that I want to keep the generated name (such as my-bucket-15jsi17g9cby0) as not specify a custom name through the "BucketName" property.

有人有想法吗？

推荐答案

您可以使用CloudFormation 伪参数，以生成BucketName和Name标记值的唯一名称。这类似于模板自动生成的内容。这也保证了唯一的名称，因为与该区域组合的堆栈名称对于CloudFormation必须是唯一的。如果仅使用单个区域，则可以删除区域引用。

You could use the CloudFormation pseudo parameters to generate a unique name for the BucketName and the Name tag value. This is similar to what the template generates automatically. This also guarantees a unique name since the stack name combined with the region must be unique to CloudFormation. If you're only using a single region, you could drop the region reference.

"MyBucket" : {
  "Type" : "AWS::S3::Bucket",
  "Properties" : {
    "BucketName" : { "Fn::Join" : [ "-", [{ "Ref" : "AWS::StackName" }, "s3", { "Ref" : "AWS::Region" }]]},
    "AccessControl" : "Private",
    "Tags" : [
      { "Key" : "Name", "Value" : { "Fn::Join" : [ "-", [{ "Ref" : "AWS::StackName" }, "s3", { "Ref" : "AWS::Region" }]]}}
    ]
  }
}

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