Basically, yes. It's a scheduler, a networking layer (cross-communication across nodes if pods that need to talk to each other are scheduled on different nodes)

Basically, yes. It's a scheduler, a networking layer (cross-communication across nodes if pods that need to talk to each other are scheduled on different nodes), and some storage management (so you define a volume and tell MySQL to persist there etc etc). And an optional LB/router for ingress traffic to the pods. That, and a loads of very verbose YAML to describe things.