Hard to say without knowing what they ran on what. There is a non trivial amount of memory that gets eaten up by the various k8s processes, docker and networkin

Hard to say without knowing what they ran on what. There is a non trivial amount of memory that gets eaten up by the various k8s processes, docker and networking if you are using small nodes. I have a completely empty k8s cluster up right now with 1 worker and 1 master and the worker has about ~230 mb of ram used up.