[nsd-users] nsd as bind slave (xfer problem)

Matthijs Mekking matthijs at NLnetLabs.nl
Tue Feb 17 08:58:50 UTC 2009

Aaron Hopkins wrote:
> On Mon, 16 Feb 2009, Thomas Krause wrote:
>> Now I want to add additional slave zones to the server. But this works
>> only with stopping and starting the nsd process. None of the other
>> nsdc commands starts the zone transfer from the master.
>> What is wrong?
> As far as I know, nsd can't add or remove zones while running.  This was a
> feature requested years ago, but I haven't seen any announcements of
> progress on it.

The reason for this is, is that it is required to re-read the
configuration file. The decision was to not read the configuration file
while running in order to minimalize security vulnerabilities.

> This continues to be the main reason I haven't adopted nsd for production
> use; I wasn't able to figure out a sane way to add or remove zones without
> dropping queries.  My nameservers handle thousands of domains, and
> something
> gets added or removed regularly.  I don't want authoritative nameserver
> downtime every time I do a push.  Am I missing something?
>                                     -- Aaron
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