以本站 “www.draftposts.com” 为例，预期结果是把 WordPress 后台管理面板 (“www.draftposts.com/wp-admin/”) 的域名换成另外一个（比如改成 “admin.draftposts.com/wp-admin/”）。
Nginx
How to Host wp-admin on a Different Domain
Let’s take this WordPress site “www.draftposts.com” as an example. What we want to achieve is to host the admin panel (“www.draftposts.com/wp-admin/”) on a different (sub)domain (making it “admin.draftposts.com/wp-admin/” for example).