aws s3存储桶策略未按预期工作

Question

{  
   "Version":"2012-10-17",
   "Id":"BackupBucketPolicy",
   "Statement":[  
      {  
         "Sid":"DenyAllOther",
         "Effect":"Deny",
         "NotPrincipal":{  
            "AWS":[  
               "arn:aws:iam::ACCID1:user/USER1",
               "arn:aws:iam::ACCID1:root",
               "arn:aws:iam::ACCID2:role/backup-full-access"
            ]
         },
         "Action":"s3:*",
         "Resource":[  
            "arn:aws:s3:::test-nr-6",
            "arn:aws:s3:::test-nr-6/*"
         ]
      },
      {  
         "Sid":"DevAccountRootFullAccess",
         "Effect":"Allow",
         "Principal":{  
            "AWS":[  
               "arn:aws:iam::ACCID1:user/USER1",
               "arn:aws:iam::ACCID1:root"
            ]
         },
         "Action":"s3:*",
         "Resource":[  
            "arn:aws:s3:::test-nr-6",
            "arn:aws:s3:::test-nr-6/*"
         ]
      },
      {  
         "Sid":"GraphBackupReadWriteDeleteAccess",
         "Effect":"Allow",
         "Principal":{  
            "AWS":"arn:aws:iam::ACCID2:role/backup-full-access"
         },
         "Action":[  
            "s3:ListBucket",
            "s3:GetObject",
            "s3:PutObject",
            "s3:DeleteObject"
         ],
         "Resource":[  
            "arn:aws:s3:::test-nr-6",
            "arn:aws:s3:::test-nr-6/*"
         ]
      }
   ]
}

{  
   "Version":"2012-10-17",
   "Statement":[  
      {  
         "Sid":"Stmt2",
         "Effect":"Allow",
         "Action":[  
            "s3:ListBucket",
            "s3:GetObject",
            "s3:PutObject",
            "s3:DeleteObject"
         ],
         "Resource":[  
            "arn:aws:s3:::test-nr-6",
            "arn:aws:s3:::test-nr-6/*"
         ]
      }
   ]
}

我搞不清这里出了什么问题。如有任何帮助，我们将不胜感激。

Answer 1

首先，您不需要deny-all-other策略，因为S3 bucket权限默认为deny。

其次，创建backup-full-access角色时，需要将其类型设置为跨帐户访问的角色。

最后，您的角色策略应该写成：

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "s3:ListAllMyBuckets",
      "Resource": "arn:aws:s3:::*"
    },
    {
      "Effect": "Allow",
      "Action": [
        "s3:ListBucket",
        "s3:GetBucketLocation"
       ],
      "Resource": "arn:aws:s3:::test-nr-6"
    },
    {
      "Effect": "Allow",
      "Action": [
        "s3:GetObject",
        "s3:PutObject",
        "s3:DeleteObject"
      ],
      "Resource": "arn:aws:s3:::test-nr-6/*"
    }
  ]
}