I'm trying to implement dual LAMP servers for a series of PHP+MySQL hosted sites which are very session-sensitive. Files can be shared between the two via a remote NFS mount and the databases can be moved to a central server as well. However, how can I have the session data from Apache/PHP available to multiple servers?
One option I've found would be to keep the sessions in the respective databases, but I'd rather not rewrite sites which I don't maintain. Any other way of doing this?
I'd like to hear past experiences and current setups, if any.
