[CentOS] nagios check_local_disk failing

Hey all,

I have a local disk check defined which is giving me an error:

Current Status:
  UNKNOWN
 (for 0d 0h 1m 38s)Status Information:Unknown argument
Usage:
check_disk -w limit -c limit [-W limit] [-K limit] {-p pathPerformance Data:-x
device} [-C] [-E] [-e] [-f] [-g group ] [-k] [-l] [-M] [-m] [-R path ] [-r
path ] [-t timeout] [-u unit] [-v] [-X type] [-N type] [-n]

 I have a local check setup like this in the server's config:

define service{
        use                             local-service         ; Name of
service template to use
        host_name                       monitor1
        service_description             Root Partition
        check_command                   check_local_disk!20%!10%!/
        }

It's attempting to do a local disk check on the nagios server itself. Not
an NRPE check.

This is the command definition:

# 'check_local_disk' command definition
define command{
        command_name    check_local_disk
        command_line    $USER1$/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$ -x
$ARG4$
        }

Can someone please tel me where I'm going wrong?

Thanks,
Tim

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