linux - Nagios NRPE on Ubuntu 12.04 "Unable to read output"

Saturday, August 30, 2014

Right to the point.

NRPE.CFG Modifications:

Added Nagios Host to Allowed:


allowed_hosts=127.0.0.1,192.168.1.10

Removed # in front of command_prefix=/usr/bin/sudo

After that i have reloaded the service.


/etc/init.d/nagios-nrpe-server restart

I have also edited /etc/sudoers


# User privilege specification
root    ALL=(ALL:ALL) ALL
nagios  ALL=NOPASSWD: /usr/lib/nagios/plugins/

Running:


$ ./check_users -w 5 -c 10
USERS OK - 1 users currently logged in |users=1;5;10;0

Works and i get my results

Running:


su nagios -c "./check_users -c 2 -w 2"

Resolves in nothing.

From the Nagios host to the new remote system i can run:

check_nrpe -H 192.168.1.20

And i get NPRE v2.12 as result.

I have checked so to that Nagios is owner to the plugin folder but still no go.

Any tips would be helpful.

(and yes i have googled and read a 10-20 threads but still no go)

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