[Samba] Some fileservers don't work when half of the DCs are down

L.P.H. van Belle belle at bazuin.nl
Thu Nov 26 12:24:36 UTC 2020

dig NS $(hostname -d) 
Whats the output? Do you see all you DC's? 


> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens 
> Emilian Mitocariu via samba
> Verzonden: donderdag 26 november 2020 13:12
> Aan: samba at lists.samba.org
> Onderwerp: [Samba] Some fileservers don't work when half of 
> the DCs are down
> Hi,
> I recently built a new set of DCs, joined them to the domain 
> and moved the
> FSMO roles to one of the new DCs. These new DCs are spread 
> over 3 offices:
> 3 DCs for 1 office and 2 DCs for each of the other 2 offices. 
> Same amount
> for the old DCs.
> The problem I'm facing is that I've tried to shutdown the old 
> DCs to test
> everything is working just with the new DCs, before demoting 
> the old ones
> from the domain. But I've started to get complaints that some of the
> fileservers(samba as well) are not working anymore so I had 
> to start the
> old DCs back up. I believe the reason for this might be that when I do
> "host -t SRV _ldap._tcp.domain.local" or "samba-tool dns query <DC>
> domain.local @ A -U username" the old DCs are first in the 
> list and the new
> ones being so far up the list they don't even get to be 
> tried. Is there a
> way to change this order through samba-tool or something else?
> Or if my hunch is not correct, please let me know what I 
> should do? Also,
> let me know if additional info is needed.
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