[Nagiosplug-help] Problem with nagios check_ping plugin

From: Alex Dehaini <alexdehaini(at)gmail.com>
Date: Fri Oct 05 2007 - 11:19:08 EDT

Hi Everyone,

I have been using nagios for 2 months now and it is really good. So far, all plug-ins work well but recently the check_ping plugin has been acting funny and giving wrong results.

This is the OS info
OS - Debian
Nagios Version 2.9
Problem = check_ping plugin reports alot of packet loss on our network but when we use regular ping commands, it is not true. check_ping looks like this in the command.cfg file

# 'check_ping' command definition
define command{

        command_name    check_ping
        command_line    $USER1$/check_ping -H $HOSTADDRESS$ -w $ARG1$ -c
$ARG2$ -p 10
        }

This is an example of a service that uses check_ping

define service{

        use                             servers
        host_name                       bhslave@nkwanta
        service_description             PING
        check_command                   check_ping!200.0,20%!600.0,60%
        }

The problem is nagios will warn me of 28% packet loss to this host that is 3 hops away from the monitoring system and the RTA will be about 60ms. It does this randomly. I will like to know how nagios computes this info and how it determines this.

Any help will be greatly appreciated.

Regards,
Alex Dehaini

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Received on Fri Oct 5 11:26:37 2007