问S3桶名是如何在CloudFormation中派生的？
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Stack Overflow用户

提问于 2021-12-22 07:49:08

回答 1查看 919关注 0票数 1

我有一个cloudformation template.js，它创建了一个桶。我不知道桶名是怎么组装的。

假设我的堆栈名是my-service，我将作为my-service-s3bucket-1p3s4szy5bomf创建桶名

，

，我想知道这个名字是如何派生出来的，

，

，我也想在最后去掉这个arn。-1p3s4szy5bomf
Can --我跳过了最后的输出，不知道他们做了什么

template.js中的代码

var stackTemplate = {

    "AWSTemplateFormatVersion": "2010-09-09",
    "Description": "with S3",
    "Resources": {
        "S3Bucket": {
            "Type": "AWS::S3::Bucket",
            "DeletionPolicy": "Retain",
            "Properties": {},
            "Metadata": {
                "AWS::CloudFormation::Designer": {
                    "id": "bba483af-4ae6-4d3d-b37d-435f66c42e44"
                }
            }
        },
        "S3BucketAccessPolicy": {
            "Type": "AWS::IAM::Policy",
            "Properties": {
                "PolicyName": "S3BucketAccessPolicy",
                "Roles": [
                    {
                        "Ref": "IAMServiceRole"
                    }
                ],
                "PolicyDocument": {
                    "Version": "2012-10-17",
                    "Statement": [
                        {
                            "Effect": "Allow",
                            "Action": [
                                "s3:DeleteObject",
                                "s3:GetObject",
                                "s3:PutObject",
                                "s3:PutObjectAcl",
                                "s3:List*"
                            ],
                            "Resource": [
                                {
                                    "Fn::Sub": [
                                        "${S3BucketArn}",
                                        {
                                            "S3BucketArn": {
                                                "Fn::GetAtt": ["S3Bucket", "Arn"]
                                            }
                                        }
                                    ]
                                },
                                {
                                    "Fn::Sub": [
                                        "${S3BucketArn}/*",
                                        {
                                            "S3BucketArn": {
                                                "Fn::GetAtt": ["S3Bucket", "Arn"]
                                            }
                                        }
                                    ]
                                }
                            ]
                        }
                    ]
                }
            }
        }
    },
    "Outputs": {
        "s3Bucket": {
            "Description": "The created S3 bucket.",
            "Value": {
                "Ref": "S3Bucket"
            },
            "Export": {
                "Name": {
                    "Fn::Sub": "${AWS::StackName}-S3Bucket"
                }
            }
        },
        "s3BucketArn": {
            "Description": "The ARN of the created S3 bucket.",
            "Value": {
                "Fn::GetAtt": ["S3Bucket", "Arn"]
            },
            "Export": {
                "Name": {
                    "Fn::Sub": "${AWS::StackName}-S3BucketArn"
                }
            }
        }
    }
};

stackUtils.assembleStackTemplate(stackTemplate, module);

amazon-s3

amazon-cloudformation

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回答 1

Stack Overflow用户

回答已采纳

发布于 2021-12-22 08:16:53

I want to know how this name was derived

如果您没有为桶指定名称，CloudFormation将根据模式CloudFormation生成一个新的名称

在文档https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-s3-bucket.html BucketName中，存储桶的名称。如果不指定名称，AWS CloudFormation将生成唯一ID，并使用该ID作为桶名。

I also want to get rid of that arn at the end. -1p3s4szy5bomf

您可以指定桶的名称，但是AWS重新建议让它空出来生成一个新的名称，以避免使用相同的名称创建(stackset.)以CloudFormation为例：

"Resources": {
        "S3Bucket": {
            "Type": "AWS::S3::Bucket",
            "DeletionPolicy": "Retain",
            "Properties": {
               "BucketName": "DesiredNameOfBucket" <== 
                },
            "Metadata": {
                "AWS::CloudFormation::Designer": {
                    "id": "bba483af-4ae6-4d3d-b37d-435f66c42e44"
                }
            }
        },

Can I skip Outputs at the end, Not sure what they do