Difficiles Nugae Labs

In the nagios world, PNP4Nagios is an useful tool for collecting measures and drawing a graphic, e.g. to show the use of a monitored resource.
A plugin for PNP4Nagios is useful if it’s able to write some performance data.

So, the plugin output should be something like

PING OK – Packet loss = 0%, RTA = 0.26 ms|’ping reply time’=26ms

instead of

PING OK – Packet loss = 0%, RTA = 0.26 ms

If Your plugin does’n write performance data, You can put a simple shell scritp between nagios and the plugin with a small modification of Your nagios config.

1. /etc/nagios/commands.cfg
   

   define command{
   command_name wrapped_ping
   command_line /usr/lib/nagios/plugins/wrapped_ping $HOSTADDRESS$ $ARG1$ $ARG2$
   }

2. /etc/nagios/services.cfg
   

   define service{
   use generic-service ; Name of service template to use

   host_name intranet
   service_description PING
   is_volatile 0
   check_period 24×7
   max_check_attempts 3
   normal_check_interval 5
   retry_check_interval 1
   contact_groups admins
   notification_interval 120
   notification_period 24×7
   notification_options w,u,c,r
   check_command wrapped_ping!100.0,20%!500.0,60%
   }

3. /etc/nagios/serviceextinfo.cfg
   

   define serviceextinfo {
   host_name intranet
   service_description PING
   action_url /nagios/share/index.php?host=$HOSTNAME$&srv=$SERVICEDESC$
   }

Here You can download my version of the wrapped_ping shell script I wrote.

Tags: nagios

This entry was posted on Tuesday, December 29th, 2009 at 13:22 and is filed under Notes. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.