安装NRPE启动时报错问题！

chao1999

apt-get install libssl-dev libssl0.9.8   
tar zxvf nrpe-2.12.tar.gz  
cd nrpe-2.12  
./configure
make all  
make install-plugin  
make install-daemon  
make install-daemon-config  

/usr/local/nagios/bin/nrpe -c  /usr/local/nagios/etc/nrpe.cfg –d    # 启动NRPE

执行完命令后提示如下：

NRPE - Nagios Remote Plugin Executor
Copyright (c) 1999-2008 Ethan Galstad (nagios@nagios.org)
Version: 2.12
Last Modified: 03-10-2008
License: GPL v2 with exemptions (-l for more info)
SSL/TLS Available: Anonymous DH Mode, OpenSSL 0.9.6 or higher required

***************************************************************
** POSSIBLE SECURITY RISK - TCP WRAPPERS ARE NOT AVAILABLE!  **
**      Read the NRPE SECURITY file for more information     **
***************************************************************

Usage: nrpe [-n] -c <config_file> <mode>

Options:
-n            = Do not use SSL
<config_file> = Name of config file to use
<mode>        = One of the following two operating modes:
   -i          =    Run as a service under inetd or xinetd
   -d          =    Run as a standalone daemon

Notes:
This program is designed to process requests from the check_nrpe
plugin on the host(s) running Nagios.  It can run as a service
under inetd or xinetd (read the docs for info on this), or as a
standalone daemon. Once a request is received from an authorized
host, NRPE will execute the command/plugin (as defined in the
config file) and return the plugin output and return code to the
check_nrpe plugin.

3 [root@sps ~/nrpe-2.12]$