amazon-web-services - Cloudfront 的 Cloudformation S3 存储桶主体

Question

我正在尝试为 S3 存储桶上的 cloudfront 分发创建一个 Yaml 模板。 我不知道如何在 BucketPolicy 上添加 principal。

我想知道如何替换 CloudFront 源访问身份 XXXXXXXXXX 上的 XXXXXXXXXXX 原则上用于将通过部署模板生成的云前端。

还有没有办法在 yaml 模板上添加 html、css 同步过程(我现在通过 aws cli 进行)？

请告诉我。 TIA

 AWSTemplateFormatVersion: 2010-09-09
 Resources:
   Bucket:
     Type: 'AWS::S3::Bucket'
     Properties:
       BucketName: pridesys.webbucket
       AccessControl: Private 
       WebsiteConfiguration:
         IndexDocument: index.html

   BucketPolicy:
     Type: AWS::S3::BucketPolicy
     Properties:
       Bucket: !Ref Bucket
       PolicyDocument:
         Id: ReportPolicy
         Version: "2012-10-17"
         Statement:
           - Sid: "1"
             Effect: Allow
             Action: "s3:GetObject"
             Principal:
               AWS: "arn:aws:iam::cloudfront:user/CloudFront Origin Access Identity XXXXXXXXXXX"
             Resource: !Join ['', ['arn:aws:s3:::', !Ref Bucket, '/*']]

   Distro:
     Type: 'AWS::CloudFront::Distribution'
     Properties:
       DistributionConfig:
         Origins:
           - DomainName: !GetAtt Bucket.DomainName
             Id: foo
             S3OriginConfig: {}
          Enabled: True
         DefaultRootObject: index.html
         DefaultCacheBehavior:
           ForwardedValues:
             QueryString: False
           TargetOriginId: foo
           ViewerProtocolPolicy: allow-all

Answer 1

以下是 CloudFront 的 S3 源身份配置的有效示例:

  WebUIBucket:
    Type: AWS::S3::Bucket
  CloudFrontOriginIdentity:
    Type: AWS::CloudFront::CloudFrontOriginAccessIdentity
    Properties:
      CloudFrontOriginAccessIdentityConfig:
        Comment: "origin identity"
  WebUIPolicy:
    Type: AWS::S3::BucketPolicy
    Properties: 
      Bucket:
        Ref: WebUIBucket
      PolicyDocument:
        Version: "2012-10-17"
        Statement:
          - Effect: Allow
            Principal:
              CanonicalUser:
                Fn::GetAtt: [ CloudFrontOriginIdentity , S3CanonicalUserId ]
            Action: "s3:GetObject"
            Resource: !Sub "${WebUIBucket.Arn}/*"
  WebpageCDN:
    Type: AWS::CloudFront::Distribution
    Properties:
      DistributionConfig:
        Origins:
          - DomainName: !Sub "${WebUIBucket}.s3.amazonaws.com"
            Id: webpage
            S3OriginConfig:
              OriginAccessIdentity: !Sub "origin-access-identity/cloudfront/${CloudFrontOriginIdentity}"

至于将 Assets 同步到 S3 存储桶，CloudFormation 功能无法提供此功能。您要么必须实现 CustomResource，要么继续使用 CLI。