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Ceph Cookbook

You're reading from   Ceph Cookbook Practical recipes to design, implement, operate, and manage Ceph storage systems

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Product type Paperback
Published in Nov 2017
Publisher Packt
ISBN-13 9781788391061
Length 466 pages
Edition 2nd Edition
Languages
Tools
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Authors (3):
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Karan Singh Karan Singh
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Karan Singh
 Hackett Hackett
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Hackett
 Umrao Umrao
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Umrao
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Table of Contents (23) Chapters Close

Title Page
Credits
Disclaimer
Foreword
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
1. Ceph – Introduction and Beyond FREE CHAPTER 2. Working with Ceph Block Device 3. Working with Ceph and OpenStack 4. Working with Ceph Object Storage 5. Working with Ceph Object Storage Multi-Site v2 6. Working with the Ceph Filesystem 7. Monitoring Ceph Clusters 8. Operating and Managing a Ceph Cluster 9. Ceph under the Hood 10. Production Planning and Performance Tuning for Ceph 11. The Virtual Storage Manager for Ceph 12. More on Ceph 13. An Introduction to Troubleshooting Ceph 14. Upgrading Your Ceph Cluster from Hammer to Jewel

Configuring two-way mirroring


Two-way mirroring requires a rbd-mirror daemon running on both clusters, the primary and the secondary. With two way mirroring it is possible to mirror data or images from the primary site to a secondary site, and the secondary site can mirror data or images back to the primary site. 

We will not be demoing this configuration in this book at it is very similar to one-way configuration, but we will highlight the changes needed for two way replication at the pool level, these steps are covered in the one-way replication recipe.

How to do it...

  1. Both clients must have the rbd-mirror installed and running:
        # yum install rbd-mirror
        # systemctl enable ceph-rbd-mirror.target
        # systemctl enable ceph-rbd-mirror@<client-id>
        # systemctl start ceph-rbd-mirror@<client-id>
  1. As with one way mirroring, both clients must have copies of the respective cluster configuration files and keyrings for client users for the mirrored pools.
  2. The pools...
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