The aim of clustering is to take a single point of failure and, by letting it run across multiple servers, make the service more reliable. In theory this sounds relatively simple: if server A goes down, start the service on server B. In practice, however, there are several considerations that need to be taken into account; otherwise, there is a risk that availability will likely be worse than a single server, or even worse, that data corruption may occur. High availability is very hard to get right and very easy to get wrong.
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Mastering Ceph
By :

Mastering Ceph
By:
Overview of this book
Ceph is an open source distributed storage system that is scalable to Exabyte deployments. This second edition of Mastering Ceph takes you a step closer to becoming an expert on Ceph.
You’ll get started by understanding the design goals and planning steps that should be undertaken to ensure successful deployments. In the next sections, you’ll be guided through setting up and deploying the Ceph cluster with the help of orchestration tools. This will allow you to witness Ceph’s scalability, erasure coding (data protective) mechanism, and automated data backup features on multiple servers. You’ll then discover more about the key areas of Ceph including BlueStore, erasure coding and cache tiering with the help of examples. Next, you’ll also learn some of the ways to export Ceph into non-native environments and understand some of the pitfalls that you may encounter. The book features a section on tuning that will take you through the process of optimizing both Ceph and its supporting infrastructure. You’ll also learn to develop applications, which use Librados and distributed computations with shared object classes. Toward the concluding chapters, you’ll learn to troubleshoot issues and handle various scenarios where Ceph is not likely to recover on its own.
By the end of this book, you’ll be able to master storage management with Ceph and generate solutions for managing your infrastructure.
Table of Contents (18 chapters)
Preface
Planning for Ceph
Deploying Ceph with Containers
BlueStore
Ceph and Non-Native Protocols
Section 2: Operating and Tuning
RADOS Pools and Client Access
Developing with Librados
Distributed Computation with Ceph RADOS Classes
Monitoring Ceph
Tuning Ceph
Tiering with Ceph
Section 3: Troubleshooting and Recovery
Troubleshooting
Disaster Recovery
Assessments
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