[dns-operations] Update: Problem in Costa Rica 14 Sept.
bortzmeyer at nic.fr
Mon Sep 26 07:59:46 UTC 2011
On Tue, Sep 20, 2011 at 02:54:35PM -0600,
Luis Diego Espinoza S. <lespinoz at nic.cr> wrote
a message of 26 lines which said:
> One of the servers run out of disk space on Sep 14th at 7:00 am
> (13:00 UTC). Subsequently, one of the zone files was truncated,
> resulting in a correct SOA but with less data, not an evident error.
Thanks for the report. The advices I can give (every zone generator
has to guard itself againt this sort of problems):
* always check return codes (if you use C, check the return code of
close; or use a langauge with exceptions; in shell, use "set -e")
* check the zone file before reloading the name server: size (should
never decrease, or only by a very small amount), amount of changes,
* add a dummy TXT at the *end* of the zone file: its absence means a
* monitor the disk space (just in case).
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