DDNS updates to two master DNS servers

Jeffrey Hutzelman jhutz at cmu.edu
Tue Dec 2 17:52:33 UTC 2008

--On Tuesday, December 02, 2008 07:34:12 AM -0500 "Scott McCamish 
(Contractor)" <mccamish at usna.edu> wrote:

> In regards to the multiple-masters setup, I find I can keep them both
> correctly updated easier than I'd expect to be able to recover from a
> hardware failure on the master of a master/slave setup.

You can do that if the zones are static.  Once you begin accepting dynamic 
updates, you can't just drop in new zone files, and you really need a 
single master to insure consistency.  Otherwise, sooner or later you're 
going to end up in a situation where some updates were applied to one 
server but not the other, and now both the zone contents and serial numbers 
are out of sync.

More information about the dhcp-users mailing list