- there is a typo on line 151: it should read “>” but in the code above the “>” is in HTML markup “>” which is not helpful when copy and pasting…

- you should definitely include a warning in the comments or even a check in the script itself that “zone statistics no;” has to be set in the bind9 config (on an old Debian etch system this parameter is in /etc/bind/named.conf.options). Otherwise the named.stats file contains separate statistics for all the zones on the name server and subsequently the awk part will find very strange numbers… (I don’t know though what the default setting was, so it might not be a problem for most people…)

But otherwise: Thank you very much for this plugin!

in my productive environment where I’m using a BIND 9.5 server, it’s just fine. How did you call the script exactly? It should be run for Bind 9.5 like the following since 9.4 is the default value: ./check_bind.sh -V 9.5
Furthermore is the Nagios user allowed via /etc/sudoers to run /usr/sbin/rndc stats? Please also check whether the rndc binary resides in /usr/sbin and not in a different directory. That may vary from one distribution to another. So it is for the named.stats file which is written by the rndc binary when one’s calling ‘rndc stats’. You may also need to adjust those path variables and named.stats variable according to your distribution.

Hope this helps to get the plugin running. If not, you’re welcome to provide more information, for example the output of an “sh -x check_bind.sh -V 9.5″ via mail to mike@matejunkie.com or an example of your named.stats file. I’ll try to provide more help then since it makes it a lot easier to debug.