问题:

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?

回答1:

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

回答2:

I meet this issue and found the solution from Capifony, please try it Capifony: deployment in clustered machines
You just prepare your servers, and setup with Capifony

cap HOSTS="machine1.domain, machine2.domain" deploy:setup

And after that, always use HOSTS variable for your deploy command:

cap HOSTS="machine1.domain, machine2.domain" deploy

or deploy multistage command:

cap HOSTS="machine1.domain, machine2.domain" stage_name deploy