It appears as though you do not have permission to view information for any

nagios web界面提示
It appears as though you do not have permission to view information for any of the services you requested...
打开cgi.cfg配置文件，里面有个参数:
use_authentication=1
为了保障系统的安全性，nagios设置了这个参数，默认为1,改为0即可

重启nagios 服务
/etc/init.d/nagios restart