VirtuBox
Thanks for explain.
VirtuBox you mean explaining how to configure your DNS ?
I just realized yes, it would be great if there is a tutorials upon how to setup DNS correctly.
In my case, my domain is on Aliyun, and I already add server Ip into A record.
http://prntscr.com/qgkx5a
I use Digitalocean server for test, and digital ocean also provide "Add domain" , so I add record as below:
http://prntscr.com/qgkujr
but I found when I access subsite dashboard, Nginx 502 error might happen.
I searched google, some articles show might relate to DNS configuration, so what is the right way for DNS confirmation to recommend please?
Thanks