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Attached you will find the nrpe.cfg. This is my NNA Server which has IP 49 while XI server has IP 50. This was working fine till I upgraded/updated XI to 5.5.0. I am seriously regretting doing it. Please try to understand, we have lots of other projects to do and this is the last problem we need to ...

OK, I tried, and the nightmare continues. Now if I remove "-2" from the end of the command, I get following error message: "Critical(Return code of 255 for service 'Yum Updates' on host 'nagiosna.af.local' was out of bounds) connect to host 10.100.0.49 port 5666: Connection refused&qu...

Understood,
Now, how do I clear this mess?

[root@localhost ~]# [root@localhost ~]# service nrpe status
-bash: [root@localhost: command not found

Here is the output of the command I tried to run in CCM: [nagios@nagios.af.local ~]$ /usr/local/nagios/libexec/check_nrpe -H 10.100.0.49 -t 30 -c check_disk -a '-w 20% -c 10% -p /' -2 NRPE Plugin for Nagios Copyright (c) 1999-2008 Ethan Galstad (nagios@nagios.org) Version: 2.15 Last Modified: 09-06-...

Well, now we jumped from "frying to pan to fire", now I get following message: Unknown (No output returned from plugin) NRPE Plugin for Nagios Copyright (c) 1999-2008 Ethan Galstad (nagios@nagios.org) Version: 2.15 Last Modified: 09-06-2013 License: GPL v2 with exemptions (-l for more info...

I will try this tomorrow and let you know the results.

Attached please find install.log

HI, I tried to update/upgrade/reinstall NRPE and got following response: login as: root root@10.100.0.50's password: Last login: Wed Jul 11 06:48:20 2018 from pc161101.af.local [root@nagios ~]# cd /tmp [root@nagios tmp]# wget https://assets.nagios.com/downloads/nagiosxi/agents/linux-nrpe-agent.tar.g...

By the way, 10.100.0.49 is my NagiosNNA server and it is working fine, it's my NagiosXI sever, 10.100.0.50 having trouble!!!