在/var/www/html新建index.html
<html>
<head>
<meta http-equiv="Content-Language" content="zh-CN">
<meta HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=gb2312">
<meta http-equiv="refresh" content="0.1;url=http://IP/horizon/">
<title></title>
</head>
<body>
</body>
</html>
重启服务即可
systemctl restart httpd