Elastic Beanstalk 拒绝 AWS S3 存储权限答案

【问题标题】：AWS S3 storage permission denied from Elastic BeanstalkElastic Beanstalk 拒绝 AWS S3 存储权限
【发布时间】：2019-07-16 18:14:26
【问题描述】：

我正在尝试从 ElasticBeanstalk 部署的 EC2 实例访问我的 S3 存储桶之一。我的 EC2 实例属于 aws-elasticbeanstalk-ec2-role，我已通过 AmazonS3FullAccess 策略授予此角色：

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": "s3:*",
            "Resource": "*"
        }
    ]
}

那么bucket策略如下：

    "Version": "2008-10-17",
    "Statement": [
        {
            "Sid": "eb-ad78f54a-f239-4c90-adda-49e5f56cb51e",
            "Effect": "Allow",
            "Principal": {
                "AWS": "arn:aws:iam::XXXXXX:role/aws-elasticbeanstalk-ec2-role"
            },
            "Action": "s3:PutObject",
            "Resource": "arn:aws:s3:::elasticbeanstalk-us-east-XXXXXX/resources/environments/logs/*"
        },
        {
            "Sid": "eb-af163bf3-d27b-4712-b795-d1e33e331ca4",
            "Effect": "Allow",
            "Principal": {
                "AWS": "arn:aws:iam::XXXXXX:role/aws-elasticbeanstalk-ec2-role"
            },
            "Action": [
                "s3:ListBucket",
                "s3:ListBucketVersions",
                "s3:GetObject",
                "s3:GetObjectVersion"
            ],
            "Resource": [
                "arn:aws:s3:::elasticbeanstalk-us-east-2-XXXXXX",
                "arn:aws:s3:::elasticbeanstalk-us-east-2-XXXXXX/resources/environments/*"
            ]
        },
        {
            "Sid": "eb-58950a8c-feb6-11e2-89e0-0800277d041b",
            "Effect": "Deny",
            "Principal": {
                "AWS": "*"
            },
            "Action": "s3:DeleteBucket",
            "Resource": "arn:aws:s3:::elasticbeanstalk-us-east-2-XXXXXX"
        }
    ]
}

当我尝试从 SSH 连接或通过 .ebextensions 中的脚本访问存储桶时，我收到拒绝访问 403 错误。我尝试将文件公开并使用相同的命令，效果很好，但我需要的文件不能公开。

我认为我对存储桶和 EC2 角色都有正确的策略。不过我可能忘记了一些细节。

欢迎任何帮助。提前谢谢大家！

【问题讨论】：

您要访问存储桶中的哪个键？如果您使用该角色启动一个单独的 EC2 框并从命令行点击内容会发生什么？
@PhilipKendall 我刚刚试过你告诉我的。我已经使用该角色启动了一个 EC2 实例，当我执行命令 aws s3 ls s3:///s3.us-east-2.amazonaws.com/elasticbeanstalk-us-east-2-XXXX/ 时，它返回了同样的错误。我试过用其他桶的钥匙，我收到了同样的。我试图在存储桶中访问的密钥是/api/passport。谢谢！

标签： amazon-web-services amazon-s3 amazon-ec2 amazon-elastic-beanstalk permission-denied

【解决方案1】：

因此，根据我的知识和我之前遇到的问题，您的存储桶策略不正确。它无效，因为 ListBucket 和 ListBucketVersions 操作必须应用于存储桶名称，而不是前缀。

这是我应该有效的更正政策；

    {   
        "Version": "2008-10-17",
        "Statement": [
            {
                "Sid": "eb-ad78f54a-f239-4c90-adda-49e5f56cb51e",
                "Effect": "Allow",
                "Principal": {
                    "AWS": "arn:aws:iam::XXXXXX:role/aws-elasticbeanstalk-ec2-role"
                },
                "Action": "s3:PutObject",
                "Resource": [
                    "arn:aws:s3:::elasticbeanstalk-us-east-XXXXXX/resources/environments/logs/*",
                    "arn:aws:s3:::elasticbeanstalk-us-east-XXXXXX/resources/environments/logs"
                ]
            },
            {
                "Sid": "eb-af163bf3-d27b-4712-b795-d1e33e331ca4",
                "Effect": "Allow",
                "Principal": {
                    "AWS": "arn:aws:iam::XXXXXX:role/aws-elasticbeanstalk-ec2-role"
                },
                "Action": [
                    "s3:GetObject",
                    "s3:GetObjectVersion"
                ],
                "Resource": [
                    "arn:aws:s3:::elasticbeanstalk-us-east-2-XXXXXX/resources/environments",
                    "arn:aws:s3:::elasticbeanstalk-us-east-2-XXXXXX/resources/environments/*"
                ]
            },
            {
                "Sid": "eb-af163bf3-d27b-4712-b795-anything",
                "Effect": "Allow",
                "Principal": {
                    "AWS": "arn:aws:iam::XXXXXX:role/aws-elasticbeanstalk-ec2-role"
                },
                "Action": [
                    "s3:ListBucket",
                    "s3:ListBucketVersions"
                ],
                "Resource": [
                    "arn:aws:s3:::elasticbeanstalk-us-east-2-XXXXXX"
                ]
            },
            {
                "Sid": "eb-58950a8c-feb6-11e2-89e0-0800277d041b",
                "Effect": "Deny",
                "Principal": {
                    "AWS": "*"
                },
                "Action": "s3:DeleteBucket",
                "Resource": "arn:aws:s3:::elasticbeanstalk-us-east-2-XXXXXX"
            }
        ]
    }

未来可参考的有用文档 -> AWS s3 docs

【讨论】：