Nagios, 2nd Edition

2.9 When Nagios Needs to Do Something: The command Object

Everything that Nagios does is defined in command objects. In the example file supplied, checkcommands.cfg defines a broad range of commands which only need to be included. To do this, you just copy the file to the subdirectory mysite:^[37]

nagios@linux:/etc/nagios$ cp objects/checkcommands.cfg \ mysite/checkcommands.cfg

The existing command check_ping illustrates the definition of this object type:

# -- /etc/nagios/mysite/checkcommands.cfg
...
define command{
  command_name check_ping
  command_line $USER1$/check_icmp -H $HOSTADDRESS$ -w $ARG1$ -c $ARG2$
-p 5
}
...

check_ping is the name by which the command will later be called when defining a service. commard_line describes the command to be ...