0. 安装源

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

1. 安装

sudo yum install nginx

2. 启动

sudo systemctl start nginx

3. 启用浏览文件目录

3.1 创建目录

mkdir /root/www

3.2 修改配置文件

vim /etc/nginx/nginx.conf

3.2.1 修改运行nginx用户

# user nginx;
user root;

3.2.2 启用目录

        location / {
            root /root/www;
            autoindex on;
            autoindex_exact_size off;
            autoindex_localtime on;
        }

3.3 重启nginx服务

sudo systemctl restart nginx

3.4 测试

mkdir  /root/www/files
echo "hello" > /root/www/files/hello.txt
curl 127.0.0.1/files/hello.txt

4. 开机自动启动nginx服务

sudo systemctl enable nginx

5. 防火墙开放80端口

firewall-cmd --zone=public --add-port=80/tcp --permanent
firewall-cmd --reload

6. 问题排查

6.1 上述操作后访问返回403

确认nginx运行身份具有目录读取权限
确认selinux已关闭：参考 https://blog.csdn.net/xinluke/article/details/51925293