[nsd-users] reloading NSD zone configuration
aristima at csc.fi
Tue Apr 28 09:36:29 UTC 2009
On Tue, 28 Apr 2009, Jelte Jansen wrote:
> If you restart NSD, with some new slave zones added, it will serve existing
> zones as soon as it is up (i.e. within seconds on most systems, see below for my
> private setup and some very anecdotal timing benchmarks). It will also start to
> transfer the new slave zones, but while it is doing that it already serves
> existing ones.
Thank you for this very valuable information. Restart times of this
magnitude would be acceptable for us, given that the frequency of zone
additions is rather low in our environment.
> Throwing queries against it
> from the other side i would estimate that 1 or 2 seconds of those are spent
> waiting for the previous process to stop, at which point it is still serving.
Regarding the process stopping phase, what would be expected to happen in
case that one or more zone transfers are pending at the same time when
SIGTERM is sent to the previous process?
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