Book Image

Cloud Native with Kubernetes

By : Alexander Raul
Book Image

Cloud Native with Kubernetes

By: Alexander Raul

Overview of this book

Kubernetes is a modern cloud native container orchestration tool and one of the most popular open source projects worldwide. In addition to the technology being powerful and highly flexible, Kubernetes engineers are in high demand across the industry. This book is a comprehensive guide to deploying, securing, and operating modern cloud native applications on Kubernetes. From the fundamentals to Kubernetes best practices, the book covers essential aspects of configuring applications. You’ll even explore real-world techniques for running clusters in production, tips for setting up observability for cluster resources, and valuable troubleshooting techniques. Finally, you’ll learn how to extend and customize Kubernetes, as well as gaining tips for deploying service meshes, serverless tooling, and more on your cluster. By the end of this Kubernetes book, you’ll be equipped with the tools you need to confidently run and extend modern applications on Kubernetes.
Table of Contents (22 chapters)
1
Section 1: Setting Up Kubernetes
5
Section 2: Configuring and Deploying Applications on Kubernetes
11
Section 3: Running Kubernetes in Production
16
Section 4: Extending Kubernetes

Persistent volumes without cloud storage

Our previous examples assume that you are running Kubernetes in a cloud environment and can make use of storage services provided by the cloud platform (AWS EBS and others). This, however, is not always possible. You may be running Kubernetes in a data center environment, or on dedicated hardware.

In this case, there are many potential solutions for providing storage to Kubernetes. A simple one is to change the volume type to hostPath, which works within the node's existing storage devices to create persistent volumes. This is great when running on minikube, for instance, but does not provide as powerful an abstraction as something like AWS EBS. For a tool with on-premise capabilities similar to cloud storage tools like EBS, let's look at using Ceph with Rook. For the full documentation, check out the Rook docs (which will teach you Ceph as well) at https://rook.io/docs/rook/v1.3/ceph-quickstart.html.

Rook is a popular open source...