5.16 Monitoring a Name Server
want to monitor a zone's name servers.
freely available package that supports monitoring name servers. The
well-thought-of mon supports monitoring the DNS
service. You can get a copy from http://www.kernel.org/software/mon/. Since
the DNS-monitoring portion of the package,
dns.monitor, is written in Perl using the
Net::DNS module, it's easy to adapt to your
You can also use Dave
Barr's excellent dnswalk,
available from http://www.visi.com/~barr/dnswalk/, for DNS
monitoring. Also built using Net::DNS, dnswalk
detects lame and unresponsive name servers, as well as
many common zone data errors. Just make sure
dnswalk can transfer a copy of the zone you want
to monitor, and specify
dnswalk's - l
command-line option to turn on lame delegation checking.
Then you can run dnswalk periodically from
cron and send yourself the output.
5.16.4 See Also
Recipes Section 9.8 through Section 9.11 for examples of programming with Net::DNS.