Cloudfront 访问被拒绝

Question

我正在尝试使用 Cloudformation 创建具有 S3 源的 Cloudfront。我想将 S3 对象限制为只能通过 Cloudfront 访问。但是，我使用 S3 直接 url 和 Cloudfront url 都被拒绝访问。

AWSTemplateFormatVersion: "2010-09-09"
Resources:
  S3Bucket:
    Type: AWS::S3::Bucket
    Properties:
      AccessControl: Private
  CloudFrontOriginIdentity:
    Type: 'AWS::CloudFront::CloudFrontOriginAccessIdentity'
    Properties:
      CloudFrontOriginAccessIdentityConfig:
        Comment: 'origin identity'
  BucketPolicy:
      Type: 'AWS::S3::BucketPolicy'
      Properties:
        Bucket: !Ref S3Bucket
        PolicyDocument:
          Statement:
            - Effect: Allow
              Principal:
                AWS: !Sub 'arn:aws:iam::cloudfront:user/CloudFront Origin Access Identity ${CloudFrontOriginIdentity}'
              Action: 's3:GetObject'
              Resource: !Sub 'arn:aws:s3:::${S3Bucket}/*'
  CloudFrontDistribution:
    Type: 'AWS::CloudFront::Distribution'
    Properties:
      DistributionConfig:
        DefaultCacheBehavior:
          AllowedMethods:
            - GET
            - HEAD
            - OPTIONS
          CachedMethods:
            - GET
            - HEAD
            - OPTIONS
          Compress: true
          DefaultTTL: 3600
          ForwardedValues:
            Cookies:
              Forward: none
            QueryString: false
          MaxTTL: 86400
          MinTTL: 60
          TargetOriginId: s3origin
          ViewerProtocolPolicy: 'redirect-to-https'
        DefaultRootObject: 'index.html'
        Enabled: true
        HttpVersion: http2
        Origins:
          - DomainName: !GetAtt 'S3Bucket.DomainName'
            Id: s3origin
            S3OriginConfig:
              OriginAccessIdentity: !Sub 'origin-access-identity/cloudfront/${CloudFrontOriginIdentity}'

在 S3 中，我得到了 index.html，里面只有 Hello。

创建的存储桶策略

{
"Version": "2008-10-17",
"Statement": [
    {
        "Sid": "",
        "Effect": "Allow",
        "Principal": {
            "AWS": "arn:aws:iam::cloudfront:user/CloudFront Origin Access Identity xxxxxxxxxxxx"
        },
        "Action": "s3:GetObject",
        "Resource": "arn:aws:s3:::mystack-s3bucket-xxxxxxxxxxx/*"
    }
]
}

Answer 1

我在我的沙盒帐户中部署了您的模板。它按预期工作。存储桶、策略、CF 发行版都很好，我的示例网站可以正常工作。

只要确保您使用 CF 域名从 Internet 访问您的静态网站，而不是存储桶 url，因为我看到有人错误地将存储桶 url 与 CF 一起使用。它的形式为

ddd7asdf234sa.cloudfront.net