一次遇到 CHECK_NRPE: Error - Could not complete SSL handshake.

環境：CentOS 6.4，源碼安裝nrpe-2.15

安裝nrpe已經幾十次了，沒想到今天又遇到這個錯誤，用以前的方法無法解決，現記錄如下。

# /usr/local/nagios/libexec/check_nrpe -H localhost
CHECK_NRPE: Error - Could not complete SSL handshake.

解決方法：

因為測試的時候 127.0.0.1並不報錯

# /usr/local/nagios/libexec/check_nrpe -H 127.0.0.1
NRPE v2.15
所以試着在/etc/xinetd.d/nrpe 的 "only_from" 選項后面增加 localhost，發現測試結果正確了。

# cat /etc/xinetd.d/nrpe
# default: on
# description: NRPE (Nagios Remote Plugin Executor)
service nrpe
{
        flags           = REUSE
        socket_type     = stream
        port            = 5666
        wait            = no
        user            = nagios
        group           = nagios
        server          = /usr/local/nagios/bin/nrpe
        server_args     = -c /usr/local/nagios/etc/nrpe.cfg --inetd
        log_on_failure  += USERID
        disable         = no
        only_from       = 127.0.0.1 localhost
}

# /etc/init.d/xinetd restart

# /usr/local/nagios/libexec/check_nrpe -H localhost
NRPE v2.15