使用动态文件在EC2上挂载S3（s3fs）-持久公共权限 [英] Mount S3 (s3fs) on EC2 with dynamic files - Persistent Public Permission

问题描述

使用S3FS和FUSE将S3存储桶安装到AWS EC2实例时，我遇到了一个问题，即正在更新我的S3文件，但是新文件未获得适当的许可。

Using S3FS and FUSE to mount a S3 bucket to an AWS EC2 instance, I encountered a problem whereby my S3 files are being updated, but the new files doesn't adopt the proper permission.

新文件具有的ACL权限是 ---------而不是 rw-r--r--。我确保通过以下方式正确安装存储桶：

The ACL rights that the new files had were "---------" instead of "rw-r--r--". I've ensured that the bucket is mounted properly by:

sudo /usr/bin/s3fs -o allow_other -o default_acl="public-read" [bucketname] [mountpoint] 

并在/ etc / fstab中创建自动挂载：

and creating an automount in /etc/fstab:

s3fs#[bucketname]  [mountpoint]     fuse    defaults,noatime,allow_other,uid=1000,gid=1000,use_cache=/tmp,default_acl=public-read 0 0

和/ etc / passwd-s3fs中的密码文件

and password file in /etc/passwd-s3fs with the right permissions.

我的设置是Ubuntu 13.04，PHP5，AWS SDK。

My setup is Ubuntu 13.04, PHP5, AWS SDK.

经过2天的实验，我在下面提供的答案中找到了针对PHP的解决方案。

After 2 days of experimenting, I've found a solution (for php) in the provided answer below.

推荐答案

在我的php脚本中，将文件PUT到S3使用适用于PHP的AWK SDK，我必须添加元数据，如下所示，这可以解决问题：

In my php script that PUT files to S3 using AWK SDK for PHP, I had to add in the meta data, as shown below, which did the trick:

$response = $s3->create_object('bucketname', 'mountpoint/'.$filename, array(
    'body'  => $json_data,
    'contentType' => 'application/json',
    'acl' => AmazonS3::ACL_PUBLIC,
    'meta' => array(
        'mode'         => '33188',    // x-amz-meta-mode
    )
));

模式 33188定义了权限 rw-r--r--而不是 S3存储桶中的------------（但仅反映在EC2安装的文件夹中），后来由EC2安装的驱动器继承。

The mode "33188" defined the permissions "rw-r--r--" instead of "---------" in S3 bucket (but reflected only in the EC2 mounted folder), which was later inherited by the EC2 mounted drive.

希望这对某人有帮助。让我知道！

Hope this helps someone. Let me know!

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