Check_NRPE Error - Could not Complete SSL Handshake Nagios
You may get encounter error “CHECK_NRPE: Error - Could not complete SSL handshake” from Nagios monitoring you need to check SSL or nrpe file configuration
1. Be ensure openssl-devel package be installed in your system. If it’s not, install that using YUM command
2. Check the nrpe configure file make sure the only_from = is the IP of Nagios monitoring server.
[root@host]# vi /etc/xinetd.d/nrpe
Assume that the nagios server IP address is 192.168.0.1 and Client IP Address : 192.168.0.10
also check in your nrpe.cfg file Nagios server IP address added on allowed_hosts.
Now, restart xinetd,
I hope, after you did will never facing this issue on Nagios Monistroing.