About Zone refresh on a very big DNS server.

Ross Vandegrift ross at kallisti.us
Fri Mar 9 14:55:20 UTC 2007

On Fri, Mar 09, 2007 at 12:30:08AM -0800, Wang Penghui wrote:
> > It depends on what data is in the zones. If your data is static
> > e.g. no dynamic dns on the nameserver, then you might look for
> > a nameserver that works with files and needs no reloads.
> >
> We use Bind 9.2.1-16 in RedHat 9. And all the zone files are simply
> text files. And there are not any dynamic contents there. We use our
> own programs to modify the zone file content. Then load the
> modificaton via "/etc/init.d/named reload" to refresh the
> modification.

Aha - then this is easy!  Change your code to used rndc, which
supports reloading a single zone.  Then, when a zone is modified, you
run "rndc reload asdf.com" and only that zone is reloaded.

> I wonder know is there any better method could make the refresh time
> shorter.

Like has been mentioned you could switch to DLZ.  The bind
installation I roll with is DLZ and I'm wishy-washy on it.  It's got
some amazing features, but like another poster said, it has its costs
as well.

Ross Vandegrift
ross at kallisti.us

"The good Christian should beware of mathematicians, and all those who
make empty prophecies. The danger already exists that the mathematicians
have made a covenant with the devil to darken the spirit and to confine
man in the bonds of Hell."
	--St. Augustine, De Genesi ad Litteram, Book II, xviii, 37

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