nginx error! The page you are looking for is not found. Website Administrator Something has triggered missing webpage on your website. This is the default 404 error page for nginx that is distributed with Fedora. It is located /usr/share/nginx/html/404.html You should customize this error page for your own site or edit the error_page directive in the nginx configuration file /etc/nginx/nginx.conf
这种是属于正常的404错误，无法找到被请求的网页
也就是网页不存在，无法进行访问
查询一下PID号，执行一个Nginx的命令
如果发现无法找到PID号，说明服务端口没有启动
查看一下对应端口，是否有服务启用命令：lsof -i 端口号
这里我们看到明明有nginx的服务，但是为什么无法访问网站
我们把现有的进程全部杀掉
命令：kill -9 进程号
然后重启Nginx的服务，再进行查看指定端口确认启动服务后重新访问一下指定网页
