Nagios Support Forum

Hi

I am seeing alot of new monitors that have been configured reporting back with the following message
CHECK_NRPE: Receive header underflow - only 0 bytes received

These are on CentOS7 Servers

The Monitors are setup as like this
Check Command
check_nrpe
$ARG1$ check_mem
$ARG2$ -a '-w 20 -c 10'

When it is configured like this we get the above meaage

If I remove $ARG2$ then the Monitor reports back OK

Thanks

Do you have dont_blame_nrpe=1 set in your /usr/local/nagios/etc/nrpe.cfg file to allow arguments on the remote system?

Please attach these files from one of the failing NRPE systems:
What does show on the remote system when you run the check and it fails?