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

On Tue, 6 Sep 2016 13:59:43 +0000
Julian Zielke via samba <samba at lists.samba.org> wrote:
> BTW, this is our smb.conf:
> 
> # Global parameters
> [global]
> workgroup = mydomain
> realm = mydomain.local
> netbios name = myhostname
> server string = Samba AD Client Version %v
> security = ads
> password server = dc03, dc04, dc01, dc02, *
You should let Samba find the password server, so I would change the
above to just 'password server = *', which is a default setting, so
you might as well delete the line.
 
> server role = standalone server
No, if you use 'security = ads' then it is 'server role = member
server'
> 
> winbind separator = +
> winbind enum users = yes
> winbind enum groups = yes
> winbind use default domain = no
This is the default setting.
> winbind refresh tickets = Yes
> winbind offline logon = true
> winbind nested groups = yes
> 
> template shell = /bin/bash
> 
> idmap config * : range = 16777216-33554431
> idmap config mydomain : backend = rid
> idmap config mydomain : range = 16777216-33554431
And this is a no-no, the ranges must not overlap, never mind overlap,
yours are the same.
> 
> log file = /var/log/samba/log.%m
> max log size = 1000
> printing = bsd
> printcap name = /dev/null
> 
> 
> 
Rowland

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.
> -----Ursprüngliche Nachricht-----
> Von: samba [mailto:samba-bounces at lists.samba.org] Im Auftrag von
> Rowland Penny via samba
> Gesendet: Dienstag, 6. September 2016 16:10
> An: samba at lists.samba.org
> Betreff: Re: [Samba] Winbind / Samba auth problem after username change
>
> On Tue, 6 Sep 2016 13:59:43 +0000
> Julian Zielke via samba <samba at lists.samba.org> wrote:
>
> > BTW, this is our smb.conf:
> >
> > # Global parameters
> > [global]
> > workgroup = mydomain
> > realm = mydomain.local
> > netbios name = myhostname
> > server string = Samba AD Client Version %v
> > security = ads
> > password server = dc03, dc04, dc01, dc02, *
>
> You should let Samba find the password server, so I would change the
> above to just 'password server = *', which is a default setting, so
> you might as well delete the line.
>
> > server role = standalone server
>
> No, if you use 'security = ads' then it is 'server role =
member server'
>
> >
> > winbind separator = +
> > winbind enum users = yes
> > winbind enum groups = yes
> > winbind use default domain = no
>
> This is the default setting.
>
> > winbind refresh tickets = Yes
> > winbind offline logon = true
> > winbind nested groups = yes
> >
> > template shell = /bin/bash
> >
> > idmap config * : range = 16777216-33554431
> > idmap config mydomain : backend = rid
> > idmap config mydomain : range = 16777216-33554431
>
> And this is a no-no, the ranges must not overlap, never mind overlap,
> yours are the same.
>
> >
> > log file = /var/log/samba/log.%m
> > max log size = 1000
> > printing = bsd
> > printcap name = /dev/null
> >
> >
> >
>
> Rowland
>
> --
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
Wichtiger Hinweis: Der Inhalt dieser E-Mail ist vertraulich und ausschließlich
für den bezeichneten Adressaten bestimmt. Wenn Sie nicht der vorgesehene
Adressat dieser E-Mail oder dessen Vertreter sein sollten, so beachten Sie
bitte, dass jede Form der Kenntnisnahme, Veröffentlichung, Vervielfältigung oder
Weitergabe des Inhalts dieser E-Mail unzulässig ist. Wir bitten Sie, sich in
diesem Fall mit dem Absender der E-Mail in Verbindung zu setzen. Wir möchten Sie
außerdem darauf hinweisen, dass die Kommunikation per E-Mail über das Internet
unsicher ist, da für unberechtigte Dritte grundsätzlich die Möglichkeit der
Kenntnisnahme und Manipulation besteht

Important Note: The information contained in this e-mail is confidential. It is
intended solely for the addressee. Access to this e-mail by anyone else is
unauthorized. If you are not the intended recipient, any form of disclosure,
reproduction, distribution or any action taken or refrained from in reliance on
it, is prohibited and may be unlawful. Please notify the sender immediately. We
also would like to inform you that communication via e-mail over the internet is
insecure because third parties may have the possibility to access and manipulate
e-mails.

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