Nagios Support Forum

Hi!

Another issue migrating from Nagios Core 3.2.3 to Nagios XI 5.8.2. All the checks with check_nrpe are failing with error "NRPE Error: Could not complete SSL handshake" (both in windows and linux machines):

Linux machines
Version of nrpe (running without xinetd): NRPE v2.12

Windows machines
Version of nrpe: NRPE 0.39.327

I have checked this post (same simptoms), trying with -2, -3 and -n options but same error. Is there another solution instead of upgrading all our clients (more than 800 including windows and linux)?

Hi,

If you're not planing to upgrade the NRPE agent on the remote systems, then you'll want to add the -2 flag to the check_nrpe command in Nagios XI. This can be done in the CCM by going to Configure > Core Config Manager > Commands.

See: https://support.nagios.com/kb/article/n ... s-786.html

The SSL error is most likely the result of a changing IP address. Check the following file on the remotes systems and make sure the allowed host option is set to the IP address of the XI server. More details and instructions are available in the following guide.

NRPE - CHECK_NRPE: Error - Could Not Complete SSL Handshake

Hi Benjamin, thank you for your reply.

The -2 parameter doesn't work unless we add the following line to the nrpe.cfg: Once added the line, the check is working again but we're going to update all of our clients after all

Glad to hear you resolved it! Let us know if you have any related questions or if we're okay to lock this up and mark it as resolved.

Please, mark this topic as resolved.

SoporteGSID wrote:Please, mark this topic as resolved.

Locking thread