如何将Flow Log流日志保存到另一个AWS账号？

Question

【以下的问题经过翻译处理】 大家好，
我正在尝试将帐户1中的Flow Log流日志保存到帐户2中的s3存储桶中，但是我找不到实现该功能的方法，当我尝试设置时，会出现以下错误：“对于LogDestination: ，方法不允许。请检查LogDestination权限。”

在帐户2的s3存储桶中，我已经进行了以下设置：

```
{
    "Version": "2012-10-17",
    "Id": "Policy1",
    "Statement": [
        {
            "Sid": "writeflow",
            "Effect": "Allow",
            "Principal": {
                "AWS": "arn:aws:iam:::root"
            },
            "Action": "s3:*",
            "Resource": "arn:aws:s3:::"
        }
    ]
}

```

我也尝试在s3存储桶上进行了以下设置：为其他AWS帐户开启访问权限，Grantee： 具有完全访问权限。
目前我临时设置完全访问权限，一旦尝试成功，我将减少这些权限。

Answer

【以下的回答经过翻译处理】 大家好，我们通过下列脚本实现了需求（账户2的s3存储桶策略），只需将 123412341234 替换为发送流日志的帐户即可。例如：1234-1234-1234转123412341234

```
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "AWSLogDeliveryWrite",
            "Effect": "Allow",
            "Principal": {
                "Service": "delivery.logs.amazonaws.com"
            },
            "Action": "s3:PutObject",
            "Resource": [
                "arn:aws:s3:::s3bucketname",
                "arn:aws:s3:::s3bucketname/*"
            ],
            "Condition": {
                "StringEquals": {
                    "aws:SourceAccount": "123412341234",
                    "s3:x-amz-acl": "bucket-owner-full-control"
                },
                "ArnLike": {
                    "aws:SourceArn": "arn:aws:logs:ap-southeast-2:123412341234:*"
                }
            }
        },
        {
            "Sid": "AWSLogDeliveryCheck",
            "Effect": "Allow",
            "Principal": {
                "Service": "delivery.logs.amazonaws.com"
            },
            "Action": [
                "s3:GetBucketAcl",
                "s3:ListBucket"
            ],
            "Resource": "arn:aws:s3:::s3bucketname",
            "Condition": {
                "StringEquals": {
                    "aws:SourceAccount": "123412341234"
                },
                "ArnLike": {
                    "aws:SourceArn": "arn:aws:logs:ap-southeast-2:123412341234:*"
                }
            }
        }
    ]
}

```

如何将Flow Log流日志保存到另一个AWS账号？

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