Nagios web界面提示Apache应该是我们最常用的部署了，它可以被弄得很复杂，但在Nagios apache这个平台上，我们只需要简单的功能即可，为了验证用户，我们稍微加一点修改就行了。
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即可几则Nagios apache的问题处理装了几次，换了几个版本的系统，脑袋都大了，终于解决了
nrpe在 ./configure时提示
checking for SSL... configure: error: Cannot find ssl libraries
把openssl-devel装上就可以了
Nagios apacheweb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。
Service Commands 中Enable notifications for this service时报错Sorry Dave, I can't let you do that...
It seems that you have chosen to not use the authentication functionality of the CGIs.
I don't want to be personally responsible for what may happen as a result of allowing unauthorized users to issue commands to Nagios,so you'll have to disable this safeguard if you are really stubborn and want to invite trouble.
Read the section on CGI authentication in the HTML documentation to learn how you can enable authentication and why you should want to.
修改cgi.cfg文件
修改use_authentication=1 (默认) ，如果没有添加，重启nagios服务。
is not allowed to connect to this MySQL server
server(nagios服务端192.168.0.132)
#/usr/local/nagios/libexec/check_mysql -H 192.168.0.207 -u root -p xukixu
此时可能会出现错误：Host '192.168.0.132' is not allowed to connect to this MySQL server
因此只要在客户端做个mysql授权用户访问即可
Nagios client(客户端192.168.0.207)
#mysql -uroot -pabcd
mysql>grant all privileges on *.* to
root@192.168.0.132
identified by 'abcd;
mysql>flush privileges;
mysql>quit;
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