The "How It Works" page, https://letsencrypt.org/howitworks/ , has me a bit worried. Anytime I see a __magic__ solution that has you running a single command to solve all your problems I immediately become suspicious at how much thought went into the actual issue. If I'm running a single web app on a single Ubuntu server using Apache then I'm set! If I'm running multiple web apps across multiple servers using a load…
I don't get why they are releasing a command line, instead of just giving us a cert that we can install by ourselves.
Generate key, Generate CSR, Send CSR, Receive Certs from CA, Verify ownership, Install certs
Presumably their command line client creates the key, the CSR, sends the CSR, then gets back the certs (at least I'd hope so). I'd be happy to use a vetted command line utility which did that, or even just parts of that process, if I were sure the private key were not transmitted. It's just automating stuff which with current CAs needs to be done manually.