On May 4 2011, Doug Barton wrote:
On 05/04/2011 01:22, hugo hugoo wrote:
So..no way to check that a zone is expired?
You're asking the wrong question. The correct question is, "How can I
make sure that a zone is up to date on all of the slaves?" You do that
by querying the SOA record for the zone on each slave and compare the
serial number to the master.
This isn't necessarily the "right question". It is perfectly possible
for a slave's copy of a zone to be up to date, but still be about to
expire, because the slave has been unable to *confirm* that it is up
to date for the expiry period (due to network problems, configuration
errors, or whatever).
If Mark Andrews' "EDNS Expire Option" I-D had taken off, one would be
able to use that to test time-to-expiry for a zone from outside the
server, rather than messing about with the modification times of the
master files. But sadly, it didn't ...
--
Chris Thompson
Email: c...@cam.ac.uk
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