check_dns plugin

[Alex Gunn]

Good afternoon,

I have a couple of questions about the check_dns plugin that I was hoping you could answer. We're trying to use the plugin in a service check which could return any IP in a certain subnet. We're attempting to use CIDR notation to achieve that but aren't having any luck with it. We have two instances of Opsview running on our network. One using check_dns 2.2 from monitoring-plugins and one using 2.3.1 from Nagios-plugins. Neither of their man pages include a reference to CIDR

However, this suggests that CIDR should work from version 2.3 onwards:
https://github.com/monitoring-plugins/monitoring-plugins/blob/master/NEWS

Where this manual for 2.2 says that it should accept CIDR:
https://www.monitoring-plugins.org/doc/man/check_dns.html

And this manual for 2.3.3 again doesn't mention CIDR
https://nagios-plugins.org/doc/man/check_dns.html

Is there any difference in the versions available from monitoring-plugins and Nagios-plugins? Can you confirm which instance of either should accept CIDR and whether either of our instances should accept CIDR?

Thanks,

Alex Gunn
Network Support Engineer
Hargreaves Lansdown

alex.gunn at hl.co.uk
0117 906 7807 (ext: 3607)

One College Square South
Anchor Road
Bristol, BS1 5HL

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