I've got Nagios up and running well, except I'm having problems with the check_nrpe command.
I have a command set up to send the following:
check_nrpe -H $HOSTADDRESS$ - c checkEventLog -a filter=new file=application MaxWarn=1 MaxCrit=1 filter=in filter-generated=>1d filter+eventID==34113
If I execute this command directly from the shell it returns the expected result.
However, within Nagios it always reports the state as WARNING and the Status Information is always (null).