Nagios Support Forum

Hi,
i am trying to make nagios monitoor filesystems on sevaral remote linux-servers.

On the command line(from the nagios-server) this works fine.

nagios-server:

/usr/lib64/nagios/plugins/check_nrpe -H on7p0021 -t 30 -c check_disk -a '-w 20% -c 10% -R /'

On the remote linux-server:

nrpe.cfg:

command[check_disk]=/usr/lib64/nagios/plugins/check_disk $ARG1$

But is use a services.cfg file, that looks like this:

define service {
use generic-service
host_name on7p0021
check_interval 300
service_description Check Disk Space Root
check_command check_disk!check_root
check_interval 15
retry_interval 1

It doesn't seem to be working. Nothing in the gui, no error calls in the logs..

I also use a basic.cfg, that looks like this:

define command{
command_name check_disk
command_line /usr/lib64/nagios/plugins/check_nrpe -H '$HOSTADDRESS$' -c check_disk -t 300 -a '$ARG1$' '$ARG2$' '$ARG3$' '$ARG4$'
}

What am i doing wrong...?? Please Help.
Regards Paul

Hello, @welbp00. This is what your command looks like compiled.

/usr/lib64/nagios/plugins/check_nrpe -H hostaddress_here -c check_disk -t 300 -a 'check_root'

In your service check, you're calling the check_disk command and after ! you have "check_root", meaning that the first $ARG1$ is going to be check_root. ! signs are used to separate arguments.

This is what I recommend using instead:

define command{
command_name check_nrpe
command_line /usr/lib64/nagios/plugins/check_nrpe -H $HOSTADDRESS$ -t 300 -c $ARG1$ $ARG2$
}

define service {
use generic-service
host_name on7p0021
check_interval 300
service_description Check Disk Space Root
check_command check_nrpe!check_disk! -a '-w 20% -c 10% -R /'
check_interval 15
retry_interval 1

Hello npolovenko, many thnx for your reply.

But i still don't get it to work. I am sure i am doing something wrong....
After the adjustments made given by you, i still don't see anything appear in the nagios gui. The logging is showing no errors.
Here is some more info.

i have a:

010.linux.basic.cfg

define command{
command_name check_disk
command_line /usr/lib64/nagios/plugins/check_nrpe -H '$HOSTADDRESS$' -t 300 -c $ARG1$ $ARG2$
}

-------------------------------------
and a 020.linux.hostgroups.cfg

and a 030.linux.hosts.cfg

and a 040.linux.services.cfg

containing:

define service {
use generic-service
host_name {{ db2Servers.db2primary1.name }}
check_interval 300
service_description Check Disk Space Root
check_command check_nrpe!check_disk! -a '-w 20% -c 10% -R /'
check_interval 15
retry_interval 1
}

What command line must i put in the nrpe.cfg?

Hope you can help this newbee out...

Thnx, and regards.

Paul.

@welbp00, You shouldn't use single quotes around $HOSTADDRESS$ because that will force nagios to import the string literal instead of the actual host name. Please change this:

define command{
command_name check_disk
command_line /usr/lib64/nagios/plugins/check_nrpe -H '$HOSTADDRESS$' -t 300 -c $ARG1$ $ARG2$
}

To this:

define command{
command_name check_disk
command_line /usr/lib64/nagios/plugins/check_nrpe -H $HOSTADDRESS$ -t 300 -c $ARG1$ $ARG2$
}

Also, this is not going to work:

host_name {{ db2Servers.db2primary1.name }}

You need to create host definitions for each host. You can find examples of host definitions in this tutorial:
https://assets.nagios.com/downloads/nag ... e/NRPE.pdf

Section: " Create host and service definitions"

Then you need to create service definitions. You can find examples right after host examples in the same article.

Thnx npolovenko.

I will read the pdf, and configure the files.

I will let you know the progress.

Regards,

Paul.

@welbp00, Sounds good, keep us updated.

Got it working. Something about using two hosts.cfg... A collegua helped me and we worked it out.

Lack of experience was the problem.

Learning every day

Thnx for the support, you may close this topic.

@welbp00, Glad you figured it out! Feel free to open new threads when something else comes up.