Nagios/NRPE relationship

[Lee Azzarello]

It helps me to build up a NRPE service check manually. First execute
it manually on the host and confirm it's working, next copy the
command line into the nrpe configuration. Disconnect from that host
and connect to the host where nagios is running and manually execute
the check_nrpe plugin with the IP/hostname of the remote host to
confirm remote execution works. Then go into the service configuration
and lock it down. I prefer not to pass arguments via NRPE, so the
service check is always just the name of the NRPE command name on the
remote host.

There is also SNMP, though that's a real can of worms if you haven't
yet worked with Net-SNMP before.

-lee

On Wed, Mar 4, 2009 at 6:26 PM, Martyn <martyn at chetnet.co.uk> wrote:
> Hi all, hope you do no think this is a stupid question; however I have to
> ask it anyway for a better understanding.
>
> I have my Nagios Server with NRPE plugins installed and I have a Linux
> Remote Server that I want to monitor, I know that you need NRPE on the
> remote Linux box but after that it goes a bit glazed, this is the bit I need
> to understand.
>
> Here is the standard configuration NRPE installed on my remote Linux box:
>
> command[check_users]=/usr/local/nagios/libexec/check_users -w 5 -c 10
> command[check_load]=/usr/local/nagios/libexec/check_load -w 15,10,5 -c
> 30,25,20
> command[check_disk1]=/usr/local/nagios/libexec/check_disk -w 20 -c 10 -p
> /dev/sda1
> command[check_zombie_procs]=/usr/local/nagios/libexec/check_procs -w 5 -c 10
> -s Z
> command[check_total_procs]=/usr/local/nagios/libexec/check_procs -w 150 -c
> 200
>
> So my question is, if I need to monitor SMTP on the remote box I would have
> to ask the remote administrator to add the following command to their
> nrpe.cfg:
>
> Command[check_smtp]=/usr/local/nagios/libexec/check_smtp -H localhost
>
> Do they have to use the -H localhost directive or is there something
> different they can use, the localhost just does not seem right looking at
> the other examples above.
>
> Then on my Nagios Server, under the .cfg box I want to monitor I define the
> command:
>
> define service{
>         use                              generic-service
>         host_name                   linux-server
>         service_description       SSH
>         check_command          check_nrpe!check_ssh
>         }
>
> Hope its not such a stupid question that it does not warrant a reply.
>
> Rgs
> Martyn
>
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------------------------------------------------------------------------------
Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA
-OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise
-Strategies to boost innovation and cut costs with open source participation
-Receive a $600 discount off the registration fee with the source code: SFAD
http://p.sf.net/sfu/XcvMzF8H
_______________________________________________
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::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
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