先安装nginx的yum源
http://nginx.org/en/linux_packages.html#stable 找到链接，安装：
rpm -ivh http://nginx.org/packages/centos/6/noarch/RPMS/nginx-release-centos-6-0.el6.ngx.noarch.rpm
查看：
yum info nginx
安装：
yum install nginx
service nginx start
先安装nginx的yum源
http://nginx.org/en/linux_packages.html#stable 找到链接，安装：
rpm -ivh http://nginx.org/packages/centos/6/noarch/RPMS/nginx-release-centos-6-0.el6.ngx.noarch.rpm
查看：
yum info nginx
安装：
yum install nginx
service nginx start