[Samba] Fwd: Samba 4 two DCs no matching UID/GID

Izan Díez Sánchez ids at empre.es
Wed Jan 14 01:56:28 MST 2015

What if I use uidNumber to avoid messing up with idmap.ldb? In the first 
domain controller works fine, ignores idmap and use uidNumber, but this 
attribute is not being replicated when a new user is created.

I explain myself a little deeper:
1-I have an AD DC, all users contain uidNumber. "wbinfo -i user" returns 
uidNumber as expected.
2-I join a second DC. LDAP is replicated correctly, uidNumber attribute 
included. "wbinfo -i user" returns uidNumber as expected.
3-I create a new user in the first DC, and add manually the 
corresponding uidNumber.
4-User is replicated fine to second DC but lacks of uidNumber set on the 
first one, thus "wbinfo -i user" does not return de same uidNumber.

The advantage of using rfc2307 is not such if uidNumber is not 
replicated. Do I have to replicate manually? Am I missing something?
Any suggestion is welcomed.


Izan Díez Sánchez
Empresarios Agrupados
Magallanes 3
28015 Madrid
Tel. +34 91 309 80 00 (ext: 8813)
ids at empre.es

El 13/01/2015 a las 18:56, Rowland Penny escribió:
> On 13/01/15 17:40, Dania Ramirez Moya wrote:
>> ---------- Forwarded message ----------
>> From: Dania Ramirez Moya <dania181087 at gmail.com>
>> Date: Fri, 9 Jan 2015 12:12:18 -0500
>> Subject: Samba 4 two DCs no matching UID/GID
>> To: samba <samba at lists.samba.org>
>> Hello list:
>> I have a install of two Debian7 machines with samba 4.1.7. On DC1 I 
>> made a
>> domain provision with --use-rfc2307. On DC2 I made a join as DC 
>> exactly as
>> https://wiki.samba.org/index.php/Join_a_domain_as_a_DC ,  I build samba4
>> with rfc2307 too. Also on additional joined Domain Controller I added 
>> the
>> parameter idmap_ldb:use rfc2307 = yes according to the wiki
>> https://wiki.samba.org/index.php/Using_RFC2307_on_a_Samba_DC. I used 
>> to set Unix Attributes on a user account
>> I installed and configured sssd 1.10  to pull the RFC2307 attributes 
>> in two
>> DCs but the UID/GID mismatched. Do I missing some configuration?
>> Best regards
>> Dania
> Well, not configuration, but you seem to have missed that you 
> shouldn't use the DC as a fileserver and that idmap.ldb on the second 
> DC will not match the one on the first DC. The last one is easy to 
> fix, copy idmap.ldb from the first DC to the second DC, to use the DC 
> as a fileserver will need to wait until sometime after 4.2.
> Rowland

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