samba - Sep 2016 - Winbind / Samba auth problem after username change

On Tue, 6 Sep 2016 14:56:20 +0000
Julian Zielke <jzielke at next-level-integration.com> wrote:
> OK, I've commented out that line, leaving only:
> 
> > idmap config mydomain : backend = rid
> > idmap config mydomain : range = 16777216-33554431
> 
> in the config file.
> 
> Also I did a net cache flush and deleted the database files
> at /var/lib/samba. Still nothing...same old username when querying
> the new one using getent passwd. I noticed the user having an ID of
> 4294967295 which exceeds the limit in the config file. Is this
> normal? Also I created a new domain user which could log in, changed
> the name and the same happened.
> 
>
So, 'getent passwd oldusername' produces a result, so where is it
coming from ?

Have you checked /etc/passwd ?

What is in the 'passwd' and 'group' lines in /etc/nsswitch.conf
?

You say that this computer is using winbind and not sssd, if so, can I
suggest you have a look here:

https://wiki.samba.org/index.php/Setup_Samba_as_an_AD_Domain_Member

Rowland

No, getent NEWusername produces a result SHOWING the old username - not the
other way around.
The machine is a domain member. We did a join using net join ads.

The passwords file has only the standard local users in there.

================================================================cat
/etc/nsswitch.conf
# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed,
try:
# `info libc "Name Service Switch"' for information about this
file.

passwd: compat winbind
group: compat winbind
shadow:         compat

hosts: files dns mdns4
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

group: compat winbind
================================================================
> -----Ursprüngliche Nachricht-----
> Von: samba [mailto:samba-bounces at lists.samba.org] Im Auftrag von
> Rowland Penny via samba
> Gesendet: Dienstag, 6. September 2016 17:08
> An: samba at lists.samba.org
> Betreff: Re: [Samba] Winbind / Samba auth problem after username change
>
> On Tue, 6 Sep 2016 14:56:20 +0000
> Julian Zielke <jzielke at next-level-integration.com> wrote:
>
> > OK, I've commented out that line, leaving only:
> >
> > > idmap config mydomain : backend = rid
> > > idmap config mydomain : range = 16777216-33554431
> >
> > in the config file.
> >
> > Also I did a net cache flush and deleted the database files
> > at /var/lib/samba. Still nothing...same old username when querying
> > the new one using getent passwd. I noticed the user having an ID of
> > 4294967295 which exceeds the limit in the config file. Is this
> > normal? Also I created a new domain user which could log in, changed
> > the name and the same happened.
> >
> >
>
> So, 'getent passwd oldusername' produces a result, so where is it
> coming from ?
>
> Have you checked /etc/passwd ?
>
> What is in the 'passwd' and 'group' lines in
/etc/nsswitch.conf ?
>
> You say that this computer is using winbind and not sssd, if so, can I
> suggest you have a look here:
>
> https://wiki.samba.org/index.php/Setup_Samba_as_an_AD_Domain_Mem
> ber
>
> Rowland
>
> --
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On Tue, 6 Sep 2016 15:38:57 +0000
Julian Zielke <jzielke at next-level-integration.com> wrote:
> No, getent NEWusername produces a result SHOWING the old username -
> not the other way around. The machine is a domain member. We did a
> join using net join ads.
Where is it displaying the old username ?
> 
> The passwords file has only the standard local users in there.
Well that rules that out.
> 
> ================================================================> cat
/etc/nsswitch.conf
> # /etc/nsswitch.conf
> #
> # Example configuration of GNU Name Service Switch functionality.
> # If you have the `glibc-doc-reference' and `info' packages
> installed, try: # `info libc "Name Service Switch"' for
information
> about this file.
> 
> passwd: compat winbind
> group: compat winbind
> shadow:         compat
> 
> hosts: files dns mdns4
> networks:       files
> 
> protocols:      db files
> services:       db files
> ethers:         db files
> rpc:            db files
> 
> group: compat winbind
> ================================================================> 
Why have you got two 'group' lines ? otherwise nothing wrong there.

Is there any chance you can post a sanitized version of the users
object in AD ?

Rowland