默认情况Centos7中没有Nginx的源，Nginx官方提供了源，所以执行如下命令添加源

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

    安装Nginx

    1. yum install -y nginx

    启动Nginx并设置开机自动运行

    1. systemctl start nginx.service
    3. systemctl enable nginx.service

    Nginx关闭命令

    1. systemctl stop nginx.service

    Nginx重启命令

    1. systemctl restart nginx.service

    关闭防火墙

    1. systemctl stop firewalld 临时关闭
    3. systemctl disable firewalld ，然后reboot 永久关闭
    5. systemctl status firewalld 查看防火墙状态。

    输入IP测试：
    image.png