[Samba] Usernames in /etc/passwd vs domain (Domain Member Setup)
abartlet at samba.org
Thu Sep 22 09:25:19 UTC 2022
On Wed, 2022-09-21 at 23:00 +0000, Eddie Rowe via samba wrote:
> I am new to Samba and working to understand things since I have an
> existing Samba server joined to Active Directory as a domain
> member. I have been reading the O'Reilly Samba book to get oriented
> to things and now setting up a test server. So as to not muddy the
> water with distribution specific instructions I have been working off
> the Samba wiki<
> > to setup a test system. Under the section "Configuring the Name
> Service Switch" the wiki states "Do not use the same user names in
> the local /etc/passwd file as in the domain.". I am afraid this is
> how things are setup today on the existing server. Any suggestions
> for what I can review in the Wiki or Samba site to understand how I
> can bring our setup into one that would be a standard setup? Today
> the process for giving someone access to a Samba share involves
> killing winbind, adding the local account, adding the group that
> corresponds to the share, restarting winbind.
Samba's preference is, because it avoids double-managment and ensures
we can honour AD groups etc, to use nss_winbind to provide the users to
nsswitch, eg to make them linux users.
As you then don't want two user ids for a user, the guidance is not to
create a duplicate locally.
However many installations have done so, and do not use nss_winbind,
but want Samba to honour the local user authorization, just as NFS, SSH
or local login would.
https://attachments.samba.org/attachment.cgi?id=16970 for guidance on
how to keep your setup working with a modern (patched) Samba version.
We really should have a wiki page for nsswitch based authorization, to
help the many sites that use Samba the way you do. It isn't our
preference, but we know it is a practice that is in use and we try to
keep it working. (As this is historically how Samba behaved).
Andrew Bartlett (he/him) https://samba.org/~abartlet/
Samba Team Member (since 2001) https://samba.org
Samba Team Lead, Catalyst IT https://catalyst.net.nz/services/samba
Samba Development and Support, Catalyst IT - Expert Open Source
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