CloudFront 分配无法访问网站静态资产的 S3 存储桶

问题

我正在尝试部署一个托管我的静态网站资产的 S3 存储桶和一个云端分发来访问它，但该分发仍然返回一个裸 xml 文件以显示“访问被拒绝”错误：

<Error>
  <Code>AccessDenied</Code>
  <Message>Access Denied</Message>
  <RequestId>5N0Z412GZ0VGV79E</RequestId>
  <HostId>GkpQbOpKeDiaCdFJM7kDq6ouWL/dvdijNu7NseC7KeIIogNabowVrDcfjPZ0xajKpDTx3SmgoEI=</HostId>
</Error>

正如此文档页面在蓝色通知警报中所述，我没有将存储桶设为网站端点，这样我可以使用 OAC 来限制对其内容的访问。

一件奇怪的事情是，从 Web 控制台检查分发来源时，我看到了这个蓝色警报，但可复制策略与我在给定链接的存储桶权限中找到的相同。

我在部署期间没有出错，所以这一定是一个愚蠢的配置错误，但自一周以来它一直让我头疼，我无法弄清楚出了什么问题。

Bucket 和 object owners 对应

由于 mi 网站资产是从不同的项目/管道上传到存储桶的，我按照本指南检查存储桶和对象所有者是否不同但实际上是对应的：

> aws s3api list-buckets --query Owner.ID
"3fdbd1e5cad4dd2bbf4c66a3dbaded6b888fdb67ff6aa6e66203a4107fe17b72"

> aws s3api list-objects --bucket my-test-bucket --prefix index.html
{
    "Contents": [
        {
            "Key": "index.html",
            "LastModified": "2023-01-20T11:05:38+00:00",
            "ETag": "\"52f2df5ddf8c35391f3f15a7614def58\"",
            "Size": 325,
            "StorageClass": "STANDARD",
            "Owner": {
                "ID": "3fdbd1e5cad4dd2bbf4c66a3dbaded6b888fdb67ff6aa6e66203a4107fe17b72"
            }
        }
    ]
}

CloudFormation 模板

Resources:

  BucketPolicy:
    Type: 'AWS::S3::BucketPolicy'
    DependsOn:
      - AppBucket
      - CloudFrontDistribution
    Properties:
      Bucket: !Ref AppBucket
      PolicyDocument:
        Id: MyPolicy
        Version: '2012-10-17'
        Statement:
          Sid: PolicyForCloudFrontPrivateContent
          Action: s3:GetObject
          Effect: Allow
          Principal:
            Service: cloudfront.amazonaws.com
          Condition:
            StringEquals:
              AWS:SourceArn: !Sub arn:aws:cloudfront::${AWS::AccountId}:distribution/${CloudFrontDistribution}
          Resource: !Sub arn:aws:s3:::${AppBucket}/*

  CloudFrontDistribution:
    Type: AWS::CloudFront::Distribution
    DependsOn:
      - AppBucket
      - DefaultCachePolicy
      - DistributionOAC
    Properties:
      DistributionConfig:
        Enabled: true
        Origins:
          - Id: AppBucket
            DomainName: !GetAtt AppBucket.DomainName
            OriginPath: /*
            S3OriginConfig: {}
            OriginAccessControlId: !Ref DistributionOAC
        DefaultRootObject: index.html
        DefaultCacheBehavior:
          ViewerProtocolPolicy: redirect-to-https
          TargetOriginId: AppBucket
          CachePolicyId: !Ref DefaultCachePolicy

  DistributionOAC:
    Type: AWS::CloudFront::OriginAccessControl
    Properties: 
      OriginAccessControlConfig: 
          Name: ExampleOAC
          OriginAccessControlOriginType: s3
          SigningBehavior: always
          SigningProtocol: sigv4

  AppBucket:
    Type: 'AWS::S3::Bucket'
    Properties:
      BucketName: 'test-spa-stack-bucket-app'
      PublicAccessBlockConfiguration:
        BlockPublicAcls : false
        BlockPublicPolicy : false
        IgnorePublicAcls : false
        RestrictPublicBuckets : false
              
  DefaultCachePolicy:
    Type: AWS::CloudFront::CachePolicy
    Properties: 
      CachePolicyConfig: 
        Name: test-cache-policy
        DefaultTTL: 10
        MaxTTL: 10
        MinTTL: 1
        ParametersInCacheKeyAndForwardedToOrigin: 
            CookiesConfig: 
              CookieBehavior: none
            EnableAcceptEncodingBrotli: true
            EnableAcceptEncodingGzip: true
            HeadersConfig: 
              HeaderBehavior: none
            QueryStringsConfig: 
              QueryStringBehavior: none