Nagios Support Forum

Watch the text wall carefully when compiling the plugin... it might be that you are missing a dependency to compile that particular check and it will skip it. If that's the case simply download the headers for whichever package it says you are missing.

I figured this out (check_dns missing)!

Turns out I didnt have bind utilities installed. This fixed the issue:

# yum install bind-utils

Re-installed plugins package..

That was it!