My question is this:
Is it possible to have two separate installations of WP with two separate domains sharing the same content?
Scenario: User on http://A.mysite.com publishes a post. http://B.mysite.com uses the exact same database and can show that post as if it was its own.
I’ve been looking around for quite some time for this solution and cannot find a valid procedure to achieve this.
My ideas are:
If your main requirement is to synchronise blog posts from a master site to a slave, then maybe look at the FeedWordPress plugin. It means that you would only add/edit posts on one website and they would be replicated to the other site. That will allow you to cleanly run different plugins on the two sites.
If the URLs are the only difference between the installs you can edit one of the config.php files and add
and to the other config.php add
Both installs will use the same database info only the URLs being different.
However you will have to take care of other possibly different aspects like plugins, users, theme, and so on.
The same way you can define any other different setting case by case.