My OpenStack IP: 141.142.208.127
My OpenStack IP: 141.142.209.135
CoreOS is an extremely minimalistic Linux distro. It ships with etcd, docker, and fleetctl (notice: no package manager) with the main idea being that docker containers can provide any type of environment that would suit your current task.
The quick start tutorial for CoreOS can be found here.
Docker.io is a containerization technology that is blowing up right now in popularity.
The quick start tutorial for Docker can be found here.
More information about using Docker can be found here.
Kubernetes
Kubernetes is a cluster management framework that utilizes docker containers to enforce a given configuration.
For example: a downed node will be recreated, while an extraneous node will be killed.
A quick start tutorial for a Kubernetes can be found here.