getfree , you should contact the RightScale support.

zacard , a cloud server is just like any other server. If you check our online documentation you will find instructions on how to connect to a database, whatever it is. You just need a JDBC driver for your DB of choice.
As it regards the ...

Is there any solution or template for smartfox connecting to mysql and nosql database on the cloud?And where to deploy the server side extension?

Regards