Return Code 127

[Kreig Dubose]

I'm seeing this error in Service Status Details while using check_nrpe. 
 
from CLI:
[kreigd at goclnx1 libexec]$ ./check_nrpe -H goclnx2 -c check_users -to 10
USERS OK - 2 users currently logged in
[kreigd at goclnx1 libexec]$

However in status detail it shows:
(Return code of 127 is out of bounds - plugin may be missing)

I have no idea what status code 127 is, or what it's referring to as to how
it's missing?  As you can see it works from the CLI.  Here's the log message
it keeps spewing

[1046945879] Warning: Return code of 127 for check of service 'check_users'
on host 'goclnx2' was out of bounds. Make sure the plugin you're trying to
run actually exists.


I've tried this across different servers (as above) and on the local nagios
machine with the same results.
 
TIA

Kreig



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