If a team is used to using Capistrano for application deployments, what is the compelling benefit of switching to MCollective, or adding it into the mix? The team is already taking on the task of adopting Puppet for system configuration management, so there is a question of how much to learn at once.
In order to launch an EC2 instance you need a key pair. How do you handle the situation where an engineer with acccess to the private key for that key pair leaves the company? Would it work to add individual ssh access, and deauthorize the initial key pair, immediately after instance launch?