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)

Disaster Recovery

In the previous chapter, you learned how to troubleshoot common Ceph problems, which, although may be affecting the operation of the cluster, weren't likely to cause a total outage or data loss. This chapter will cover more serious scenarios where the Ceph cluster is down or unresponsive. It will also cover various techniques to recover from data loss. It is to be understood that these techniques are more than capable of causing severe data loss themselves and should only be attempted as a last resort. If you have a support contract with your Ceph vendor or have a relationship with Red Hat, it is highly advisable to consult them first before carrying out any of the recovery techniques listed in this chapter.

In this chapter, you will learn the following:

  • How to avoid data loss
  • How to use RBD mirroring to provide highly available block storage
  • How to investigate asserts
  • How to rebuild monitor...