Running a homebrew web app moderately reliably

I've written an application in node.js, and I want to deploy it to my linode (or somewhere, maybe nodejitsu?). It's a pretty simple app, just a couchdb server and some view rendering and caching logic.

Properties I'd like from the app environment:

• one-button restart or redeploy.
• if my app crashes, the environment should try restarting it (and emailing me) a few times before giving up.
• secure(-ish). maybe a chroot jail?
• replicable. I'd like to be able to run the same (or a similar) environment on my local machine, or on a new server, easily.

What do?