Suppose you have three hosts (host.one.domain.name, host.two.domain.name host.three.domain.name) with the same credentials, with access by ssh key, then any time...
All examples here for deploy RoR application with unicorn, staging machine (where we deploys) available via ssh by ssh_key...
If you don't have ssh key, open terminal and run following commands: cd ~/.ssh ^ ssh-keygen -t rsa -C...