Book Image

Mastering Ceph

By : Nick Fisk
Book Image

Mastering Ceph

By: Nick Fisk

Overview of this book

Mastering Ceph covers all that you need to know to use Ceph effectively. Starting with design goals and planning steps that should be undertaken to ensure successful deployments, you will be guided through to setting up and deploying the Ceph cluster, with the help of orchestration tools. Key areas of Ceph including Bluestore, Erasure coding and cache tiering will be covered with help of examples. Development of applications which use Librados and Distributed computations with shared object classes are also covered. A section on tuning will take you through the process of optimisizing both Ceph and its supporting infrastructure. Finally, you will learn to troubleshoot issues and handle various scenarios where Ceph is likely not to recover on its own. By the end of the book, you will be able to successfully deploy and operate a resilient high performance Ceph cluster.
Table of Contents (12 chapters)

Tuning Ceph

While the default configuration of Linux and Ceph will likely provide reasonable performance due to many years of research and tweaking by developers, it is likely that a Ceph administrator may want to try and squeeze more performance out of its hardware. By tuning both, the operating system and Ceph, performance gains maybe realized. In the Chapter 1, Planning for Ceph you learned about how to choose hardware for a Ceph cluster; now let's learn how to make the most of it.

In this chapter, you will learn about the following topics:

  • Latency and why it matters
  • When you should tune
  • The dangers of blindly setting configuration options
  • The importance of benchmarks and when you should learn to ignore them
  • The importance of being able to observe the results of your tuning
  • Key tuning options that you should look at

It's important to understand that by tuning, all you are doing is reducing bottlenecks...