We have a single WordPress instance, with Multisite enabled, hosting three separate blogs. (blog.example.com/blog1, blog.example.com/blog2, blog.example.com/blog3).
This multisite will be load balanced across a web tier of four servers, all accessing the same DB. I understand that
blogs.dir will need to be synced across the web tier, so that media is present, no matter which server a client hits.
Can I have a fifth web server (i.e.,
post.example.com), whose only purpose is to enable editors to login and post new content, for any of the three blogs? This way the load balanced servers are only receivers of uploaded content from
I know the syncing part is possible, but I'm not sure about how to set up WordPress to be accessible from two different sub-domains. Is that possible?
Edit: I should add that an additional goal by setting it up this way, is we hope to gain some security through obscurity, by blocking access to
/wp-admin/ on the web tier, so you can only login from the one web server (
post), but of course that all depends on the aforementioned question. :)