Nagios Support Forum

commands.cfg attached

Some Nagios clients are fine with SSL enabled while it is disabled on others.

Sent zip file.

Line 18 which is throwing the error is here: https://pastebin.com/LNuaMiPQ /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/objects/production.cfg Nagios 3.0.6 Copyright (c) 1999-2008 Ethan Galstad (http://www.nagios.org) Last Modified: 12-01-2008 License: GPL Reading configuration data... Erro...

I guess compiling NRPE w/o SSL is an option on the new strong cipher servers, and the Nagios server is able to connect using the -n switch. How do I modify the Nagios configuration file to pass the "-n" switch to ONLY those new strong cipher servers? current checks look like this: ########...

I think that the Nagios server check_nrpe version is 2.12 the nrpe.cfg file is at: https://pastebin.com/8dmUnfBL nothing in /var/log/messages on the Nagios server Nagios server: [lnxvm02:~]# uname -a Linux 2.6.18-419.el5 #1 SMP Fri Feb 24 22:06:09 UTC 2017 i686 i686 i386 GNU/Linux Nagios client: Lin...

Thanks for the input. Compiling nrpe to not use ssl is not an option. I followd the knowledgebase artice for making different nrpe's work together and got this: ~]# /usr/local/nagios/libexec/check_nrpe -2 -H strongcipherservername /usr/local/nagios/libexec/check_nrpe: invalid option -- 2 NRPE Plugin...

This definitely has something to do with SSL and more particularly not using SSL. So, there are two types of nagios client machines, one type has wealer ciphers enabled and another, newer type has only stronger ciphers. the "-n" is failing on both. With a client with weak ciphers: []# /usr...

[:~]# /usr/local/nagios/libexec/check_nrpe -n -H server_name
CHECK_NRPE: Error receiving data from daemon.

Okay I'm playing around with the -n option, this is my command and the error message, nothing in logs:
/usr/local/nagios/libexec/check_nrpe -n -H server_name -c check_mem
CHECK_NRPE: Error receiving data from daemon.