[Samba] Problems with 2 DCs.

Marc Muehlfeld mmuehlfeld at samba.org
Fri Feb 6 09:49:16 MST 2015

Hello Jean-François,

Am 04.02.2015 um 17:51 schrieb Jean-François Morcillo:
> Troubles come into the place when I try to create a user on the 2nd DC,
> I get the following error message:
> samba-tool user create usr1 usr1
> ERROR(ldb): Failed to add user 'usr1':  -
> ../source4/dsdb/samdb/ldb_modules/ridalloc.c:547: No RID Set DN - Remote
> RID Set creation needed

This sounds like your DC, didn't got an RID pool assigned from the RID
master. See
for details.

If you just have two DCs in your domain, then the first one has this
role, if you haven't transfered.

Did you had more DCs in the past and maybe haven't demoted correctly and
the AD still thinks one of the missing DCs is RID master?

Please check, which DC owns the RID master role:
# samba-tool fsmo show

> More over, new users created on the first DC are never synced to the
> second one.

Does your replication works in both direction? Check with
# samba-tool drs showrepl


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