CAN use Kubernetes. They support Cattle (Rancher's own), Kubernetes, or Swarm for orchestration. I talked with some of the folks that work at Rancher at the l

CAN use Kubernetes. They support Cattle (Rancher's own), Kubernetes, or Swarm for orchestration. I talked with some of the folks that work at Rancher at the last Dockercon and IIRC they even had some rudimentary Mesos support.