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  • Book Overview & Buying Mastering Ceph
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Mastering Ceph

Mastering Ceph

By : Nick Fisk
5 (4)
Buy this Book
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Mastering Ceph

Mastering Ceph

5 (4)
By: Nick Fisk
Buy this Book

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)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
Planning for Ceph
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Planning for Ceph
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What is Ceph?
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How Ceph works?
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Ceph use cases
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Specific use cases
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Infrastructure design
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Network design
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How to plan a successful Ceph implementation
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Summary
2
Deploying Ceph
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Deploying Ceph
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Preparing your environment with Vagrant and VirtualBox
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Orchestration
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Ansible
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A very simple playbook
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Adding the Ceph Ansible modules
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Change and configuration management
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Summary
3
BlueStore
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BlueStore
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What is BlueStore?
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Why was it needed?
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How BlueStore works
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How to use BlueStore
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Summary
4
Erasure Coding for Better Storage Efficiency
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Erasure Coding for Better Storage Efficiency
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What is erasurecoding?
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How does erasure coding work in Ceph?
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Algorithms and profiles
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Where can I use erasure coding?
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Creating an erasure-coded pool
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Summary
5
Developing with Librados
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Developing with Librados
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What is librados?
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How to use librados?
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Example librados application
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Summary
6
Distributed Computation with Ceph RADOS Classes
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Distributed Computation with Ceph RADOS Classes
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Example applications and the benefits of using RADOS classes
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Writing a simple RADOS class in Lua
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Writing a RADOS class that simulates distributed computing
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RADOS class caveats
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Summary
7
Monitoring Ceph
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Monitoring Ceph
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Why it is important to monitor Ceph
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What should be monitored
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PG states -the good, the bad, and the ugly
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Monitoring Ceph with collectd
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Summary
8
Tiering with Ceph
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Tiering with Ceph
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Tiering versus caching
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What is a bloom filter
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Tiering modes
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Uses cases
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Creating tiers in Ceph
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Tuning tiering
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Promotion throttling
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Summary
9
Tuning Ceph
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Tuning Ceph
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Latency
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Benchmarking
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Recommended tunings
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Summary
10
Troubleshooting
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Troubleshooting
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Repairing inconsistent objects
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Full OSDs
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Ceph logging
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Slow performance
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Extremely slow performance or no IO
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Investigating PGs in a down state
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Large monitor databases
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Summary
11
Disaster Recovery
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Disaster Recovery
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What is a disaster?
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Avoiding data loss
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What can cause an outage or data loss?
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RBD mirroring
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RBD recovery
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Lost objects and inactive PGs
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Recovering from a complete monitor failure
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Using the Cephs object store tool
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Investigating asserts
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Summary

BlueStore

In this chapter, you will learn about BlueStore, the new object store in Ceph designed to replace the existing filestore. Its increased performance and enhanced feature set are designed to allow Ceph to continue to grow and provide a resilient high-performance distributed storage system for the future.

You will learn the following topics:

  • What is BlueStore?
  • The limitations with filestore
  • What problems BlueStore overcomes
  • The components of BlueStore and how it works
  • How to deploy BlueStore OSDs
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Mastering Ceph
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