PT Commons

h1. Setting up NRPE on Debian server

{{>toc}}

Process:

h2. on client server

h3. Install NRPE

<pre>

aptitude install nagios-nrpe-server nagios-plugins-basic

</pre>

h3. Edit config file

<pre>

vim /etc/nagios/nrpe.cfg

</pre>

* Add IP_v4_of_Nagios_server to allowed_hosts

h3. start service

<pre>

service nagios-nrpe-server restart

</pre>

h3. check that service is running

<pre>

netstat -tpln | grep 5666

</pre>

h3. edit local config to add specified checks

<pre>

vim /etc/nagios/nrpe_local.cfg

</pre>

Add a NRPE test check and a disk check.

<pre>

0 octavia:/etc/nagios# cat nrpe_local.cfg 

######################################

# Do any local nrpe configuration here

######################################

command[check_nrpe_daemon]=/bin/echo "NRPE OK"

# disk checks

command[check_disk_root]=/usr/lib/nagios/plugins/check_disk -w 20% -c 10% -p /dev/root

</pre>

h3. restart service

<pre>

service nagios-nrpe-server restart

</pre>

h2. on monitoring server

h3. test connection

On Nagios/Icinga server test that that worked:

<pre>

/usr/lib/nagios/plugins/check_nrpe -H clientserveruri.com -c check_nrpe_daemon

NRPE OK

</pre>

h3. set up checks.

example service config file

<pre>

###############################################################################

###############################################################################

#

# SERVICE DEFINITIONS

#

###############################################################################

###############################################################################

define service{

        use                     generic-service         ; Inherit default values from a template

        host_name               clientserver

        service_description     SSH

        check_command           check_ssh

        }

define service{

        use                     generic-service         ; Inherit default values from a template

        host_name               clientserver

        service_description     HTTP

        check_command           check_http

        }

define service{

        use                     generic-service         ; Inherit default values from a template

        host_name               clientserver

        service_description     Users

        check_command           check_nrpe_1arg!check_users

        }

define service{

        use                     generic-service         ; Inherit default values from a template

        host_name               clientserver

        service_description     Load

        check_command           check_nrpe_1arg!check_load

        }

define service{

        use                     generic-service         ; Inherit default values from a template

        host_name               clientserver

        service_description     Zombie Processes

        check_command           check_nrpe_1arg!check_zombie_procs

        }

define service{

        use                     generic-service         ; Inherit default values from a template

        host_name               clientserver

        service_description     Total Processes

        check_command           check_nrpe_1arg!check_total_procs

        }

define service{

        use                     generic-service         ; Inherit default values from a template

        host_name               clientserver

        service_description     Disk Space /root

        check_command           check_nrpe_1arg!check_disk_root

        }

</pre>

sources:

http://xmodulo.com/2014/03/nagios-remote-plugin-executor-nrpe-linux.html

https://wiki.icinga.org/display/howtos/Setting+up+NRPE+with+Icinga