Load balancing nodes configuration (3 Craft nodes behind F5 Big-IP)
Update:

Am I allowed to change my mind on this? :)

My original answer didn't take into account storage/logo, storage/backups and anything else that a plugin might be storing in the craft/storage folder.

So it's probably going to be much cleaner and safer to have CRAFT_STORAGE_PATH point to the shared file system.




I would set CRAFT_STORAGE_PATH and have them write to their local file systems.  That way you have independent logs for each web server.
With that set to 'true', the PHP session files will go to whether PHP/nginx are configured to send them.
The cacheMethod config setting it purely for data caching. It's set to 'file' by default which will write to craft/storage/runtime/cache, but you can change that to some other caching method.


Actually, if you do #1, then 2 and 3 would resolve themselves, no? You'd want to make sure that your load balancer has stick sessions enabled so that a user would get sent to the same web server for subsequent requests.