In this chapter, you have learned how to troubleshoot Ceph when all looks lost. In the event that Ceph is unable to recover PGs itself, you now understand how to manually rebuild PGs from failed OSDs. You can also rebuild the monitor's database in the event that you lose all of your monitor nodes but still have access to your OSDs. In the event of a complete cluster failure that you are unable to recover from, you also have gone through the process of recreating RBDs from the raw data remaining on your OSDs. Finally, you have configured two separate Ceph clusters and configured replication between them using RBD mirroring to provide a failover option, should you encounter a complete Ceph cluster failure.
Mastering Ceph
By :
Mastering Ceph
By:
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.
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Current Title:
Mastering Ceph
Table of Contents (12 chapters)
Preface
Free Chapter
Planning for Ceph
Deploying Ceph
BlueStore
Erasure Coding for Better Storage Efficiency
Developing with Librados
Distributed Computation with Ceph RADOS Classes
Monitoring Ceph
Tiering with Ceph
Tuning Ceph
Troubleshooting
Customer Reviews