Nagios error return code of 255 is out of bounds

There is no problem when executing at the command line,

#/usr/lib64/nagios/plugins/check_nrpe-h 192.168.0.107-c Check_memory

OK 0.59G

But this problem is shown in the Nagios browser interface,

The general solution is to examine two aspects:

Vim/etc/nagios/nrpe.cfg

allowed_hosts=127.0.0.1, 192.168.0.110//Address right

Either the client or the SELinux on the server is not turned off

If not all

Then the tail/var/log/messages on the service machine

Warning:return Code of 255 for check of the service ' check-memory ' on Host ' www.node2.com ' is out of bounds.

Note Www.node2.com has a problem, look at the Nagios interface in the host www.node2.com state is down, connection is not www.node2.com, so will be error.

Nagios error return code of 255 is out of bounds