Nagios Support Forum

define service{
use generic-service
host_name content.comtex.com
service_description Memory Usage
check_command check_nrpe!check_mem
}

It is just returning unknown? Hmm..

Lets run this, please replace the path as required, and please share the output of the command from the nagios server:
Is it possible you defined the check command's alias differently than check_mem?

its giving me the no such file or directory, but i looked closer in the path /usr/local/nagios/libexec/check_nrpe, and check_nrpe isint even listed in that folder. How do i go about fixing that?

Right it may be different in your installation that's why I mentioned you may need to change the directory and point it to where check_nrpe resides currently.

and after i find it where check_nrpe is, what am i suppose to do after?

ok so i found it then ran:

/usr/lib/nagios/plugins$ /usr/lib/nagios/plugins/check_nrpe 209.114.36.166 -C check_mem -w 30 -c 50


What im getting there, is showing up on my nagios page. How do i fix this?

Could you clarify?
Are you still receiving errors in nagios? If so, what is the error?

yes, its the same error. What im saying is the error explanation that is showing up on nagios, is the same explanation that is showing up when i run this :

/usr/lib/nagios/plugins/check_nrpe content.comtex.com -C check_mem -w 30 -c 50


and i get the output this:

/usr/lib/nagios/plugins/check_nrpe: invalid option -- 'C'
/usr/lib/nagios/plugins/check_nrpe: invalid option -- 'w'

NRPE Plugin for Nagios
Copyright (c) 1999-2008 Ethan Galstad (nagios@nagios.org)
Version: 2.12
Last Modified: 03-10-2008
License: GPL v2 with exemptions (-l for more info)
SSL/TLS Available: Anonymous DH Mode, OpenSSL 0.9.6 or higher required

Usage: check_nrpe -H <host> [-n] [-u] [-p <port>] [-t <timeout>] [-c <command>] [-a <arglist...>]

Options:
-n = Do no use SSL
-u = Make socket timeouts return an UNKNOWN state instead of CRITICAL
<host> = The address of the host running the NRPE daemon
[port] = The port on which the daemon is running (default=5666)
[timeout] = Number of seconds before connection times out (default=10)
[command] = The name of the command that the remote daemon should run
[arglist] = Optional arguments that should be passed to the command. Multiple
arguments should be separated by a space. If provided, this must be
the last option supplied on the command line.
-h,--help Print this short help.
-l,--license Print licensing information.
-n,--no-ssl Do not initial an ssl handshake with the server, talk in plaintext.

Note:
This plugin requires that you have the NRPE daemon running on the remote host.
You must also have configured the daemon to associate a specific plugin command
with the [command] option you are specifying here. Upon receipt of the
[command] argument, the NRPE daemon will run the appropriate plugin command and
send the plugin output and return code back to *this* plugin. This allows you
to execute plugins on remote hosts and 'fake' the results to make Nagios think
the plugin is being run locally.

Apologies try this one: Are you sure that address will work? I'd recommend using the IP you use to SSH to that remote host.

got it again :

Incorrect command line arguments supplied

NRPE Plugin for Nagios
Copyright (c) 1999-2008 Ethan Galstad (nagios@nagios.org)
Version: 2.12
Last Modified: 03-10-2008
License: GPL v2 with exemptions (-l for more info)
SSL/TLS Available: Anonymous DH Mode, OpenSSL 0.9.6 or higher required

Usage: check_nrpe -H <host> [-n] [-u] [-p <port>] [-t <timeout>] [-c <command>] [-a <arglist...>]

Options:
-n = Do no use SSL
-u = Make socket timeouts return an UNKNOWN state instead of CRITICAL
<host> = The address of the host running the NRPE daemon
[port] = The port on which the daemon is running (default=5666)
[timeout] = Number of seconds before connection times out (default=10)
[command] = The name of the command that the remote daemon should run
[arglist] = Optional arguments that should be passed to the command. Multiple
arguments should be separated by a space. If provided, this must be
the last option supplied on the command line.
-h,--help Print this short help.
-l,--license Print licensing information.
-n,--no-ssl Do not initial an ssl handshake with the server, talk in plaintext .

Note:
This plugin requires that you have the NRPE daemon running on the remote host.
You must also have configured the daemon to associate a specific plugin command
with the [command] option you are specifying here. Upon receipt of the
[command] argument, the NRPE daemon will run the appropriate plugin command and
send the plugin output and return code back to *this* plugin. This allows you
to execute plugins on remote hosts and 'fake' the results to make Nagios think
the plugin is being run locally.