Nagios plugins not installed correctly?

Posted on 2011-10-18
Medium Priority
Last Modified: 2012-05-12
Hi There,
I'm troubleshooting a config error that pops up when ever I add a new service to a .cfg file (like windows.cfg).  The new services are part of the base plugin pack for Nagios.  Stuff like: check_disk, check_dns, check_snmp, and so on.  I can see the files in /usr/local/nagios/libexec.  So I'm guessing either my plugin is installed wrong or I have to add something to a config file somewhere so Nagios can find it.

Here's a few stats on the setup:
-running on Centos
-Nagios seems to be running fine and stable
-using service check_nt without issue

Thanks for any thoughts or help.

Question by:xdd-llc
  • 4
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Expert Comment

by:Sebastian Talmon
ID: 36995415

you could not use linux executables / plugins / scripts directly in a service definition.

first you have do define a "command" for nagios like that:

# 'check_http' command definition
define command{
    command_name    check_http
    command_line    $USER1$/check_http -I $HOSTADDRESS$ $ARG1$

then you could use that "command"  (and not the executable/script) in your service definition.
LVL 41

Expert Comment

ID: 36995507
by default the $USER1$ variable points to this location and the check_commands are referenced using
$USER1$/check_command ,..,..

define command {
                command_name                    check_cups
                command_line                    $USER1$/check_http -H $HOSTADDRESS$ -p 631


Author Comment

ID: 36995809

Thanks for responding.

I looked over my commands.cfg and did find that some of the plugins aren't defined.  Where do you get these definitions?

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LVL 41

Expert Comment

ID: 36996673
checkcommands.cfg    in the nagios directory.
LVL 41

Expert Comment

ID: 36996674
(or any file, that gets included in the nagios.conf)

Author Comment

ID: 37034150
Let me rephrase.

Is there a doc anywhere that has the "define command" structure for plugins?  How to you create a "define command" if it isn't there?  Just copy the basic structure of another one?

LVL 41

Accepted Solution

noci earned 2000 total points
ID: 37034908

Author Closing Comment

ID: 37066009
Thanks Noci.  This should get me moving in the right direction again.

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