Comments on: Nagios NRPE to Monitor Remote Linux Server

By: Dedicated Server Hosting - Hosting Dedicated Servers

Dedicated Server Hosting - Hosting Dedicated Servers — Thu, 11 Feb 2010 16:49:59 +0000

[...] openssl-devel While I would like to take credit for solving this, I found the solution here: http://www.kernelhardware.org/nagios-nrpe-to-monitor-remote-linux-server/ Share this [...]

By: Confluence: Xcalibur Development and Infrastructure

Confluence: Xcalibur Development and Infrastructure — Thu, 22 Oct 2009 17:24:07 +0000

Central Monitoring and Logging…

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By: djill

djill — Mon, 06 Jul 2009 08:11:50 +0000

I have the same problem with this command into my nrpe.cfg:

command[vsftpd]=/usr/local/nagios/libexec/check_procs -c 1: -C vsftpd

By: Fabio Milano

Fabio Milano — Sun, 05 Jul 2009 04:58:58 +0000

Dario

Could you paste:

nrpe.cfg plugin command on the remote host

service setting on the Nagios server

By: Dario

Dario — Sun, 05 Jul 2009 04:00:44 +0000

the check_nrpe worked ok by command line, but on web interface I can see “No output returned from plugin” only, Why?.

By: Fabio Milano

Fabio Milano — Fri, 03 Jul 2009 19:11:30 +0000

djill

In the line

/usr/local/nagios/libexec/check_procs –argument-array=”/usr/sbin/vsftpd” -c 1:

I don’t believe -argument-array is a valid option. -argument-array is the type of data that should be supplied to the -a option.

I usually structure my check_procs as follows for monitoring a service:

/usr/local/nagios/libexec/check_procs -c 1: -C vsftpd

By: djill

djill — Fri, 03 Jul 2009 15:49:18 +0000

Sorry, but I made a mistake with the NRPE command;

I want to say ‘(with vsftpd command into nrpe.cfg: command[vsftpd]=/usr/local/nagios/libexec/check_procs -a vsftpd)’ not ‘(with vsftpd command into nrpe.cfg: command[vsftpd]=/usr/local/nagios/libexec/check_nrpe -H localhost -c vsftpd)’…

The exact command is:

command[vsftpd]=/usr/local/nagios/libexec/check_procs –argument-array=”/usr/sbin/vsftpd” -c 1:

When I launch this command:

/usr/local/nagios/libexec/check_procs -a vsftpd

I have this output:

PROCS OK: 1 processus avec args ‘vsftpd’

But when I launch this command:

/usr/local/nagios/libexec/check_nrpe -H localhost -c vsftpd

I have this output:

PROCS OK: 0 processus avec args ‘vsftpd’

By: Fabio Milano

Fabio Milano — Fri, 03 Jul 2009 14:39:37 +0000

Djill

The nrpe “command” that is set in nrpe.cfg should be written as if you were running the check_plugin directly.

Change:

command[vsftpd]=/usr/local/nagios/libexec/check_nrpe -H localhost -c vsftpd

To:

command[check_vsftpd]=/usr/local/nagios/libexec/check_procs -a vsftpd

Run:

/usr/local/nagios/libexec/check_nrpe -H localhost -c check_vsftpd

By: djill

djill — Fri, 03 Jul 2009 09:36:59 +0000

Hi !

I have a problem with check_procs and NRPE, when I execute the check_procs plugin to check some process, It works:
/usr/local/nagios/libexec/check_procs -a vsftpd
PROCS OK: 1 processus avec args ‘vsftpd’

But when I use the same check_procs command with NRPE, it doesn’t work.
/usr/local/nagios/libexec/check_nrpe -H localhost -c vsftpd
(with vsftpd command into nrpe.cfg: command[vsftpd]=/usr/local/nagios/libexec/check_nrpe -H localhost -c vsftpd)
NRPE output is ‘PROCS CRITIQUE: 0 processus’

I execute both commands on localhost.
Others plugins works correctly, for example check_load, check_users
I don’t understand.

Any help would be appreciate

Thanks.

By: Fabio Milano

Fabio Milano — Thu, 25 Jun 2009 17:36:10 +0000

Diger

check_by_ssh can be used as well. However, when monitoring 100’s of servers check_by_ssh can place high load on your Nagios server due to all the open ssh connections.

Feel free to use which ever check method that suits your environment. That is why there is two different methods.