The ability to quickly and efficiently spin up 10's of containers in seconds soon makes you realize that. if VM sprawl was bad enough, with containers the problem can easily get a whole lot worse. With the arrival of Docker in the modern IT infrastructure, a need to manage all these containers arose. Enter Kubernetes.
Although several container orchestration technologies are available, Kubernetes has enjoyed wide-ranging success and, as it is the product on which Rook is built, this book will focus on it.
Kubernetes is an open source container-orchestration system for automating the deployment, scaling, and management of containerized applications. It was originally developed at Google to run their internal systems but has since been open sourced and seen its popularity flourish.
Although this chapter will cover deploying an extremely simple Kubernetes cluster to deploy a Ceph cluster with Rook, it is not meant to be a full tutorial and readers are encouraged to seek other resources in order to learn more about Kubernetes.