rndc reload and BIND9

Simon simon at optinet.com
Wed Jul 6 18:34:44 GMT 2005

Yes, reload is graceful, it will only load named.conf and new zones, it
will not touch preloaded zones. Having 2 masters makes no sense,
unless you are actually splitting the zone files between them. Unless
you perform a cold start of your bind, transfers only occur when a serial
number is updated (upon reload) or when a zone expires.


On Wed, 6 Jul 2005 11:02:04 -0400 (EDT), John Von Essen wrote:

>Following a post I had about BIND9, I need to verify a certain behavior
>with BIND9 and issuing a rndc reload.
>Instead, of having a master and slave, I am going to have two masters. One
>master is the real master, the other gets replicated via rsync. The main
>reason for this approach is to cut down on all the zone transfers (we
>have 12,000 domains).
>After every hourly rsync, I will issue a rndc reload. If anything has
>changed, named will see it with the new serial number. Does the reload
>keep dns functionality up and running while it performs the reload?
>A pure stop and start will take about 55 seconds, which isn't acceptable
>every hour. But if the reload (which appears to take 10 seconds) is
>gracefull and keep existing functionality intact while it reloads, then
>that would be great. Just need to verify.
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