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MinIO - Bind a user to one bucket policy (lmy.mymte.de)

submitted 1 year ago by [email protected] to c/[email protected]

5 comments fedilink hide all child comments

I was looking a long time for a policy which binds a user to a bucket. The docs are not very helpful for beginners, but I talked with an advanced user and he said it is okay to share his solution, since he is not on Lemmy

Create a new policy and fill this in:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "s3:*"
            ],
            "Resource": [
                "arn:aws:s3:::${aws:username}"
            ]
        },
        {
            "Effect": "Allow",
            "Action": [
                "s3:*"
            ],
            "Resource": [
                "arn:aws:s3:::${aws:username}/*"
            ]
        }
    ]
}

If you now create a user, just assign the user to only this policy, nothing more. The user is now allowed to create a bucket with the same name as the users. So a user Alex can only create the bucket alex and has complete access to it. The user won't see other users buckets.

All credits belongs to the very helpful person, not me ☝🏻☺️

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[–] [email protected] 3 points 1 year ago (1 children)

In MinIO you can selfhost the server. I named a bucket and user alex and I am pretty sure someone had the same idea 😁

Bucket and usernames don't need to be globally unique in MinIO. I tried the policy and it worked pretty good ☺️

[–] [email protected] 3 points 1 year ago

Ah, neat! Yeah that would work then. I'd hope that your usernames are unique in your self-hosted setup, so that should work just fine. Very nice!