Passive host checks

Nagios
1

i am running groundworks nagios on my machine,everything is working successfully except with passive host checks.
passive host checks are not working for me ,here is my configuration file
/usr/local/groundwork/nagios/eventhandlers/submit_host_check_result:
#!/bin/sh

    # Arguments:
    #  $1 = host_name (Short name of host that the service is
    #       associated with)
    #  $2 = svc_description (Description of the service)
    #  $3 = state_string (A string representing the status of
    #       the given service - "OK", "WARNING", "CRITICAL"
    #       or "UNKNOWN")
    #  $4 = plugin_output (A text string that should be used
    #       as the plugin output for the service checks)
    #

    # Convert the state string to the corresponding return code
    return_code=-1

    case "$3" in
        UP)
                    return_code=0
                ;;
           DOWN )
                return_code=1
                    ;;

UNREACHABLE)
return_code=-1
;;
esac

    # pipe the service check info into the send_nsca program, which
    # in turn transmits the data to the nsca daemon on the central
    # monitoring server

    /usr/bin/printf "%s\t%s\t%s\n" "$1" "$return_code" "$4" | /usr/local/groundwork/bin/send_nsca central server -c /usr/local/groundwork/etc/send_nsca.cfg

/usr/local/groundwork/nagios/etc/checkcommands.cfg:
define command {
command_name submit_host_check_result
command_line $USER2$/submit_host_check_result $HOSTNAME$ $HOSTSTATE$ ‘$HOSTOUTPUT$’
}
here USER2=/usr/local/groundwork/nagios/eventhandlers
passive service checks are working properly
please anyone help in passive host checks,thanks in advance for any help

2

most likely the service checks are working and the host checks are not, due to the fact that host checks are never made by nagios, unless a service check fails. So make the service fail, and perhaps the host check will work then.
Also, it helps a great deal, to run your command by hand first, to make sure it works. If it doesn’t, then paste the output here. i might say something like “command not found” or whatever.