[Samba] Winbind / Samba auth problem after username change

[Julian Zielke]

Hi Rowland,

we're using the Windows mmc for administrating samba sernet DCs running samba-sernet-ad 4.2.11-9.
4 Domain controllers are present. Primary DC replicates to a second in our local office and to 2 others in a vpn connected network.
Changes are made on our primary dc always. DC 3 and 4 and the primary and secondary DC responsible for ssh authentication on our linux boxes
having the problem.

Cheers,
Julian

-----Ursprüngliche Nachricht-----
Von: samba [mailto:samba-bounces at lists.samba.org] Im Auftrag von Rowland Penny via samba
Gesendet: Dienstag, 6. September 2016 10:31
An: samba at lists.samba.org
Betreff: Re: [Samba] Winbind / Samba auth problem after username change

On Tue, 6 Sep 2016 08:17:12 +0000
Julian Zielke via samba <samba at lists.samba.org> wrote:

> Hi,
>
> before we switched to SSSD we've been implementing the ssh
> authentication method via Domain using winbind+samba. Version
> installed on our machines is (still) 2:4.1.6+dfsg-1ubuntu2.14.04.13.
> So far everything has been working fine, however after we had to
> change a user's logon name in the domain he can't login anymore.
> auth.log shows still his old username followed by "from <IP> not
> allowed because none of user's groups are listed in AllowGroups". I
> searched several websites for a solution but only found
> recommendations on deleting the winbind cache at /var/lib/samba.
> However this didn't fix the problem. When I do a grep using getent
> passwd on the users NEW name, it shows up. So actually the domain
> controllers is delivering the correct username.
>
> Is this a known bug in version 4.1.6 or can I solve this any other way
> without running a package upgrade on a production machine?
>
> Cheers
> Julian
>

How did you change the users logon name ?
Have you checked the users object in AD ?

Rowland

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