centos7系统库中默认是没有nginx的rpm包的，所以我们本身需要先更新下rpm依赖库

(1)利用yum安装nginx需要包罗Nginx的库，莫斯科服务器 新加坡vps，安装Nginx的库

#rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm

(2)利用下面呼吁安装nginx

#yum install nginx

(3)启动Nginx

#service nginx start

或

#systemctl start nginx.service