Thread:Extension talk:Collection/Problem with multiple webservers acting as a single wiki communicating with rendering server.

We have two webservers that are front-ended by an F5 load-balancing appliance. These servers are sharing ALL files in the mediawiki instance (LocalSettings.php down to the latest uploaded file). The database is on a third server that is hidden from the public view and mwlib is installed on a fourth server also hidden from public view.

Our test environment has all three of these functions (webserver, database and mwlib) consolidated onto a single server and the Collection extension for mediawiki works okay.

But for our complex production environment, the collection of articles works and submits to the mwlib server, but the rendered PDF file is not retrievable. The TCP traffic in the mwlib server seems to indicate that it is trying to send data back to the F5 address for the mediawiki site instead of to the individual webserver that submitted the request for rendering.

Are there any configuration changes I can make to Collection or MWLIB to make the transfer of data stay between the individual webserver and the mwlib server?