[Samba] Trouble demoting DC with broken replication

Iñigo Martinez Lasala imartinez at vector-ignite.com
Tue May 20 04:18:56 MDT 2014

Delete all stuff from DNS zones and then remove DC from Active Directory 
Sites and Services.

On 19/05/14 19:09, Marc Muehlfeld wrote:
> Hello Andreas,
> Am 19.05.2014 12:26, schrieb Andreas Oster:
>> Do you / does anybody have an idea how to get rid of those orphaned
>> entries ?
> Two weeks ago I wrote the 'Demote a DC' HowTo
> (https://wiki.samba.org/index.php/Demote_a_Samba_DC#Demote_a_DC_that_isn.27t_accessable_any_more).
> While doing researches and testings for the HowTo, it turned out, that
> currently there seems to be no way (samba-tool or the usual Windows
> ways) to demote a lost DC and cleanup the metadata.
> I created a bug report about that:
> https://bugzilla.samba.org/show_bug.cgi?id=10595
> I guess the only way would be to manually find the stuff inside the AD
> and remove it manually via ldbedit. But I really would be afraid of that!
> An other idea I had, would be to temporary join a machine with the same
> name/IP as DC and then demote it with samba-tool. After that maybe less
> directory entries have to be removed (like the ophaned objectGUID
> entries). But this was just an idea and I wanted to try it in my test
> environment. But I think it would be a risky way and should be not
> recommend.
> I think this is a very serious problem/bug!
> Regards,
> Marc

Iñigo Martinez Lasala
Vector Ignite
Parque Empresarial Cerro de Los Gamos
Camino del Cerro de los Gamos, 1, Edificio 6, Planta 1
28224 Pozuelo de Alarcón - Madrid

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