nsupdate doesn't edit any files, right?

[Kevin Darcy]

The files are immediately written to non-volatile storage and
periodically dumped to the zonefile name. For instance, on BIND 8, the
changes are immediately written to a ".log" file. I'm not 100% sure how
BIND 9 manages things. Assuming no corruption of the files, no disk
errors, etc., no updates are lost.

I'm always suspicious when people ask these types of questions, though.
When you migrate to using Dynamic Update, you should no longer rely on
using the disk files for finding out all information about the zone: the
running nameserver has the most up-to-date and consistently-formatted
view of the zone data, and you should be querying it instead of trying
to parse disk files.


- Kevin

a a wrote:

> Hi all,
>
> This sounds like a total FAQ, but I've yet to see
> anywhere that this question was answered specifically.
>
> When you use nsupdate, it only updates zone
> information in the running database of BIND, and does
> not actually edit any zone files, right?  I've tested
> nsupdate successfully, and I see that the DNS server
> resolves my new entries, but no files have been
> touched.
>
> So if you had to restart DNS all updates via nsupdate
> are lost?  Or is there some way to keep changes
> persistent?
>
> Thanks in advance!
>
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