Book Image

Mastering Kubernetes - Second Edition

By : Gigi Sayfan
Book Image

Mastering Kubernetes - Second Edition

By: Gigi Sayfan

Overview of this book

Kubernetes is an open source system that is used to automate the deployment, scaling, and management of containerized applications. If you are running more containers or want automated management of your containers, you need Kubernetes at your disposal. To put things into perspective, Mastering Kubernetes walks you through the advanced management of Kubernetes clusters. To start with, you will learn the fundamentals of both Kubernetes architecture and Kubernetes design in detail. You will discover how to run complex stateful microservices on Kubernetes including advanced features such as horizontal pod autoscaling, rolling updates, resource quotas, and persistent storage backend. Using real-world use cases, you will explore the options for network configuration, and understand how to set up, operate, and troubleshoot various Kubernetes networking plugins. In addition to this, you will get to grips with custom resource development and utilization in automation and maintenance workflows. To scale up your knowledge of Kubernetes, you will encounter some additional concepts based on the Kubernetes 1.10 release, such as Promethus, Role-based access control, API aggregation, and more. By the end of this book, you’ll know everything you need to graduate from intermediate to advanced level of understanding Kubernetes.
Table of Contents (16 chapters)

GlusterFS and Ceph volumes in Kubernetes

GlusterFS and Ceph are two distributed persistent storage systems. GlusterFS is, at its core, a network filesystem. Ceph is, at the core, an object store. Both expose block, object, and filesystem interfaces. Both use the xfs filesystem under the covers to store data and metadata as xattr attributes. There are several reasons why you may want to use GlusterFS or Ceph as persistent volumes in your Kubernetes cluster:

  • You may have a lot of data and applications that access the data in GlusterFS or Ceph
  • You have administrative and operational expertise managing GlusterFS
    or Ceph
  • You run in the cloud, but the limitations of the cloud platform persistent storage are a non-starter

Using GlusterFS