（1）下载Nginx的RPM包
wget http://nginx.org/packages/centos/6/noarch/RPMS/nginx-release-centos-6-0.el6.ngx.noarch.rpm
（2）安装rpm包
rpm -ivh nginx-release-centos-6-0.el6.ngx.noarch.rpm
（3）采用yum进行安装Nginx
yum install nginx
注意：需要按y进行确认安装
