Nagios, 2nd Edition

9.3 Nagios Configuration

The matching command object is again defined in the file checkcommands.cfg; similar to check_local_disk, it should be named check_ssh_disk:

# check_ssh_disk command definition
define command{
    command_name  check_ssh_disk
    command_line     $USER1$/check_by_ssh -H $HOSTADDRESS$ \
                     -i /etc/nagios/.ssh/id_dsa \
                     -C "$USER1$/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$"
}

The command line stored in command_line first runs check_by_ssh; $USER1$ contains the local plugin path on the Nagios server. Next come the arguments—the IP address of the target host (parameter -H), the private key file (parameter -i) and finally, with the -C parameter, the complete command that the target host should carry out. If the plugin path on the target host and ...