如何授予对 Amazon S3 中某个文件夹的所有子文件夹的访问权限？

Question

这是我在 Amazon S3 中编写的策略。我认为它应该允许访问子文件夹，因为 * 但当用户尝试创建或查看子文件夹时，它会给出访问被拒绝的错误。我怎样才能改变这个工作？

{
"Version": "2012-10-17",
"Statement": [
    {
        "Sid": "AllowUserToSeeBucketListInTheConsole",
        "Action": [
            "s3:ListAllMyBuckets",
            "s3:GetBucketLocation"
        ],
        "Effect": "Allow",
        "Resource": [
            "arn:aws:s3:::*"
        ]
    },
    {
        "Sid": "AllowRootAndMediaListingOfCompanyBucket",
        "Action": [
            "s3:ListBucket"
        ],
        "Effect": "Allow",
        "Resource": [
            "arn:aws:s3:::mycoolbucket"
        ],
        "Condition": {
            "StringEquals": {
                "s3:prefix": [
                    "",
                    "media/"
                ],
                "s3:delimiter": [
                    "/"
                ]
            }
        }
    },
    {
        "Sid": "AllowAllS3ActionsInMediaFolder",
        "Effect": "Allow",
        "Action": [
            "s3:*"
        ],
        "Resource": [
            "arn:aws:s3:::mycoolbucket/media/*"
        ]
    }
]

}

更多细节：

我以用户身份登录控制台。我去了媒体文件夹。然后我单击媒体内的文件夹并收到消息“错误访问被拒绝”。

Answer 1

您缺少列出媒体文件夹内容的权限。将以下声明添加到您的政策中。

注意：您的策略应添加到用户而不是存储桶本身。更好的选择是创建一个 IAM 组，将策略附加到该组，然后将每个用户添加到该组（您提到您正在这样做）。

{
  "Sid": "AllowListingOfMediaFolder",
  "Action": ["s3:ListBucket"],
  "Effect": "Allow",
  "Resource": ["arn:aws:s3:::mycoolbucket"],
  "Condition":{"StringLike":{"s3:prefix":["media/*"]}}
},

Answer 2

通过此策略，我能够授予对 Amazon S3 中文件夹的所有子文件夹的访问权限

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "",
            "Effect": "Allow",
            "Action": "s3:ListBucket",
            "Resource": "arn:aws:s3:::<<bucketname>>",
            "Condition": {
                "StringLike": {
                    "s3:prefix": "foldername/*"
                }
            }
        },
        {
            "Sid": "",
            "Effect": "Allow",
            "Action": [
                "s3:GetObject*",
                "s3:PutObject*",
                "s3:ListBucket",
                "s3:DeleteObject*"
            ],
            "Resource": "arn:aws:s3:::<<bucketname>>/foldername/*"
        }
    ]
}