In this chapter, we took a deep look into storage in Kubernetes. We've looked at the generic conceptual model based on volumes, claims, and storage classes, as well as the implementation as volume plugins. Kubernetes eventually maps all storage systems into mounted filesystems in containers. This straightforward model allows administrators to configure and hook up any storage system from local host directories through cloud-based shared storage all the way to enterprise storage systems. You should now have a clear understanding of how storage is modeled and implemented in Kubernetes and be able to make intelligent choices of how to implement storage in your Kubernetes cluster.

In the Chapter 8, Running Stateful Application with Kubernetes, we'll see how Kubernetes can raise the level of abstraction and on top of storage help in developing, deploying, and operating stateful applications using concepts such as stateful sets.