[Samba] Problem with demoting, new dc and replic

lingpanda101 lingpanda101 at gmail.com
Thu May 17 17:11:36 UTC 2018

On 5/17/2018 12:45 PM, Carlos Bordon via samba wrote:
> Hi!
> i have 3 dcs with samba
> i demote bdc and replace it with dc2 with de same ip
> the replicate with dc1 is ok, and the replicate of dc3 with dc1 is ok,
> the problem is in dc2 with dc3
> i found the problem, but i dont known how fixes
> when i do samba-tools drs showrepl in dc3
> i see in connection appears the old dc named bdc and dont appears the new,
> dc2
> i try with samba-tool drs replicate but nothing change
> any idea?
> thanks for exist!

It sounds like after demote Samba was not able to remove some lingering 

You should remove any entries with the name bdc in your DNS. Look in 
your domain zone as well as _msdcs.cimg.local. Search all sub folders 
(ie., _sites,_tcp ect.)I find its easier to use Microsoft DNS manager 
for this.

Confirm in Active Directory Users and Computers that the DC bdc is 
deleted from the 'Domain Controllers' OU.

Finally open Active Directory Sites and Services and expand 
'Default-First-Site-Name'. Delete the bdc server if it exists. Expand 
dc1 and dc3 and remove any 'automatically generated' site links 
referencing bdc if they exist.  Use cation and double check before 
deleting that it's bdc you are deleting.

Finally let the other DC's replicate the changes you made for a few 
minutes. It should be relatively instant but just to be sure wait. Then 
run '/samba/sbin/samba_dnsupdate' on dc2.


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