Clarification about DNS notify
toto at the-damian.de
Fri Sep 10 07:56:43 UTC 2010
Am Fri, 10 Sep 2010 12:51:11 +0530
schrieb Sherin George <list at sheringeorge.co.cc>:
> Hey Guys,
> I have an issue which need some help.
> I have two master DNS servers, say A & B.
> A is running freebsd & B is running centos. B is running BIND 9 also.
> Now, I want to add one more to this cluster say C.
> I have installed centos in C with BIND 9. Now, I have copied
> /etc/named.conf & /var/name from B to C. Now I restarted named in C.
> Everything worked.
> Now, I have a question which may be quite simple, but I couldn't find
> an answer even after lot of googling. So, I would be extremely
> grateful for any advice you could offer.
> When I restarted named in C, I could see that C is sending DNS
> notifications and B is receiving it
> from /var/log/messages in C:
> "Sep 9 23:53:44 serverC named: zone example.com/IN: sending
> notifies (serial 20050 30401)"
> from /var/log/messages in B:
> Sep 9 23:53:44 serverB named: client XX.XX.XX.XX#54546:
> received notify for zone 'example.com'
> I checked /etc/named.conf and I couldn't see any particular reason
> for C choosing to notify B.
> Any explanation to this behavior or a link to any relevant guide will
> be helpful.
Sharing your current configuration would help in helping you with your
A wild guess would be that you're missing a "notify no" or "notify
master-only" option on your slave servers.
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