From: bfields@fieldses.org (J. Bruce Fields)
To: mrsvd1v4rgo1@airpost.net
Cc: linux-nfs@vger.kernel.org
Subject: Re: Help with user ID mapping?
Date: Wed, 15 Aug 2018 14:36:28 -0400 [thread overview]
Message-ID: <20180815183628.GA29569@fieldses.org> (raw)
In-Reply-To: <1533838052.2201783.1469033928.4B670F71@webmail.messagingengine.com>
On Thu, Aug 09, 2018 at 11:07:32AM -0700, mrsvd1v4rgo1@airpost.net wrote:
> I'm trying to get a NFS4 client & server id mapping working right.
>
> My client mounts to a couple of NFS4 servers.
>
> I want to get it setup so that for just ONE of them, files added to or
> modified on the server BY my local client, logged in EITHER as my user
> or root, get written with a specific user/group == "nobody:users"
You should be able to do that by just adding "all_squash" to the export
options in /etc/exports for that one client.
> I'm pretty sure that all the magic is done with idmapd config.
This is a common source of confusion. NFSv4 idmapping only deals with
names and IDs that are sent in NFSv4 protocol messages--when setting or
getting file owners and groups, or ACLs.
It's the underlying RPC protocol that tells the server who is performing
a given RPC. That always uses numeric IDs or krb5 principals, and isn't
affected by anything in idmapd.conf.
--b.
prev parent reply other threads:[~2018-08-15 21:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-09 18:07 Help with user ID mapping? mrsvd1v4rgo1
2018-08-15 18:36 ` J. Bruce Fields [this message]
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