Ha, I recently wrote a system that does more or less the exact same thing for pushing updates to IoT devices. I can tell the system to update particular nodes t

Ha, I recently wrote a system that does more or less the exact same thing for pushing updates to IoT devices. I can tell the system to update particular nodes to a given git commit, then I can roll it out to a handful of devices, then I can say "update all of them" but wait 30 seconds in between each update and so on.