centos7 使用yum 安装 nginx
1、添加安装源
默认情况Centos7中无Nginx的源，所以要设置安装源
sudo rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm

2、安装nginx
 yum install -y nginx
 
3、设置nginx 并设置开机启动
 systemctl start nginx.service
 systemctl enable nginx.service 
 
4、浏览nginx页面

http://localhost