Zone reload time after NOTIFY

Scott, Casey Casey.Scott at wizards.com
Tue May 23 23:42:15 UTC 2006


 

> -----Original Message-----
> From: bind-users-bounce at isc.org 
> [mailto:bind-users-bounce at isc.org] On Behalf Of Scott, Casey
> Sent: Tuesday, May 23, 2006 4:32 PM
> To: Ken Eddings; Barry Margolin; comp-protocols-dns-bind at isc.org
> Subject: RE: Zone reload time after NOTIFY
> 
>  
> 
> > -----Original Message-----
> > From: Ken Eddings [mailto:eddingsk at apple.com]
> > Sent: Tuesday, May 23, 2006 4:11 PM
> > To: Scott, Casey; Barry Margolin; comp-protocols-dns-bind at isc.org
> > Subject: RE: Zone reload time after NOTIFY
> > 
> > At 2:58 PM -0700 5/23/06, Scott, Casey wrote:
> > > > -----Original Message-----
> > >> From: bind-users-bounce at isc.org
> > >> [mailto:bind-users-bounce at isc.org] On Behalf Of Barry Margolin
> > >> Sent: Tuesday, May 23, 2006 1:58 PM
> > >> To: comp-protocols-dns-bind at isc.org
> > >> Subject: Re: Zone reload time after NOTIFY
> > >>
> > >> In article <e4vk94$48s$1 at sf1.isc.org>,  "Scott, Casey" 
> > >> <Casey.Scott at wizards.com> wrote:
> > >>
> > >> > I have a BIND machine configured as a secondary server
> > with 1 zone.
> > >> > The zone can receive many DDNS update from Windows clients.
> > >> The DDNS
> > >> > updates occur on the primary server, which is Windows 2003. My 
> > >> > question is that although the primary DNS server sends
> > >> NOTIFY's to the
> > >> > BIND server, the BIND server takes quite a while before it
> > >> implements any of the changes.
> > >> > I can not find any BIND config option that will effect the 
> > >> > responsiveness of BIND to NOTIFY's. I don't want to
> > force BIND to
> > >> > reload the zone for every NOTIFY, but I would like to 
> have some 
> > >> > control over the amount of time taken to implement the
> > >> changes in the zone.
> > >>
> > >> What is "quite a while"?  BIND waits a random amount of time, to 
> > >> avoid a thundering herd problem if all the slaves tried to
> > transfer
> > >> immediately.
> > >> But this shouldn't be much more than a minute, I think.
> > >>
> > >> --
> > >> Barry Margolin, barmar at alum.mit.edu Arlington, MA
> > >> *** PLEASE post questions in newsgroups, not directly to me ***
> > >> *** PLEASE don't copy me on replies, I'll read them in the
> > group ***
> > >>
> > >>
> > >>
> > >
> > >Its been between 15-30 minutes each time. BIND is installed
> > from RPM,
> > >and running on a RHEL 4 machine.
> > >
> > >Thanks,
> > >Casey
> > 
> > Have you verified that the NOTIFY is being received on the slaves?  
> > Sound's like they're not getting through and normal refresh 
> cycle is 
> > taking care of the updates.
> > 
> > 
> > -- 
> > Ken Eddings, Hostmaster, IS&T,   eddingsk at apple.com,   
> > eddingsk at mac.com
> >    Work:+1 408 974-4286 Pager: +1 408 699-3591, Fax: +1 408 974-3103
> >   Apple Computer, Inc., 1 Infinite Loop, M/S 60-MS 
> Cupertino, CA 95014 
> > The Prudent Mariner never relies solely on any single aid to 
> > navigation.
> > 
> 
> Yes, I watch the NOTIFY's being logged by the slaves. They 
> come in near-realtime of any changes to the zone. The refresh 
> value is 3hr, so the updates are occurring more frequently 
> than refresh would allow for.
> 
> 
> 

Sorry, meant to see that I watch NOTIFY's AND transfers being logged 
by the slaves.



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