If you're running on EC2, you should _really_ be using a tool like Chef or Puppet (or at least your OS's package manager with custom packages) to make your conf

If you're running on EC2, you should _really_ be using a tool like Chef or Puppet (or at least your OS's package manager with custom packages) to make your configuration repeatable. This will allow you to spin up new machines in a known configuration in minutes, and your entire environment will be completely documented.