[Samba] reslov.conf on two DC's

L.P.H. van Belle belle at bazuin.nl
Thu Mar 12 04:00:21 MDT 2015

a nice example about dns islanding. 


and with only 2 dc's 
setup the resolv.confs like : 

Primary DNS
Secondary DNS

Primary DNS
Secondary DNS

If the loopback IP address is the first entry in the list of DNS servers,
 Active Directory might be unable to find its replication partners. 
but this is manly MS DNS based, since there was a bug in the MS DNS server, concerning islanding..


>-----Oorspronkelijk bericht-----
>Van: rowlandpenny at googlemail.com 
>[mailto:samba-bounces at lists.samba.org] Namens Rowland Penny
>Verzonden: woensdag 11 maart 2015 22:03
>Aan: samba at lists.samba.org
>Onderwerp: Re: [Samba] reslov.conf on two DC's
>On 11/03/15 20:07, Marc Muehlfeld wrote:
>> Hello Rowland,
>> Am 11.03.2015 um 19:52 schrieb Rowland Penny:
>>> I tried that, pointing each DC to the other and my DNS 
>resolving slowed
>>> to a crawl, hung for short periods and generally became 
>unresponsive. I
>>> just have:
>>> search <dns domain>
>>> nameserver
>> The only problem that can appear is DNS islanding.
>> Do you use the the internal DNS or BIND?
>> Where did DNS responding slowed down? On the DCs? Or DNS in general?
>> Regards,
>> Marc
>I use bind9 (I think that there are too many problems with the 
>server to make it usable)
>When I set
>search example.com
>nameserver <the other DC>
>on both the DCs, DNS became virtually unusable everywhere, I tried 
>various other permutations, but the only one that works for me 
>(YMMV) on 
>the DCs is
>search example.com
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