I have managed to successfully deploy my Symfony2 application to a production web server, but cannot find any documentation on how to deploy to multiple servers with one deploy command. In fact, at this stage it seems that my only option is to have multiple checkouts with separate config files. Is this really the case?
You should take a look to http://capifony.org/
Update:
Here you can find a sample of how to set it up.
Deploying a Rails App to Multiple Servers using Capistrano - Best Practices