1.报错信息：
CHECK_NRPE: Error - Could not complete SSL handshake.


2.原因
nrpe配置文件没有授权服务端连接


3.解决方法
[root@nagios etc]# vim nrpe.cfg
allowed_hosts=192.168.1.21,127.0.0.1
[root@nagios etc]# pkill nrpe
[root@nagios etc]# /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d