https://www.crowdsupply.com/ben-wang/remoteboot
I've created a successful Kickstarter project doing exactly this ;)
Uses a ESP8266 chip and has the basic version of what you described
However, I'd need it to be open-source, because connecting it to a HP Proliant server is probably not trivial (these beasts have two power supplies). Also, I need it to work over ethernet.
However, I'd need it to be open-source, because connecting it to a HP Proliant server is probably not trivial (these beasts have two power supplies). Also, I need it to work over ethernet.