Book Image

Learning Ceph - Second Edition

By : Karan Singh, Vaibhav Bhembre, Anthony D'Atri
Book Image

Learning Ceph - Second Edition

By: Karan Singh, Vaibhav Bhembre, Anthony D'Atri

Overview of this book

Learning Ceph, Second Edition will give you all the skills you need to plan, deploy, and effectively manage your Ceph cluster. You will begin with the first module, where you will be introduced to Ceph use cases, its architecture, and core projects. In the next module, you will learn to set up a test cluster, using Ceph clusters and hardware selection. After you have learned to use Ceph clusters, the next module will teach you how to monitor cluster health, improve performance, and troubleshoot any issues that arise. In the last module, you will learn to integrate Ceph with other tools such as OpenStack, Glance, Manila, Swift, and Cinder. By the end of the book you will have learned to use Ceph effectively for your data storage requirements.
Table of Contents (18 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Objects


Data produced by a Ceph client is stored in objects. In fact, even most of the associated metadata that Ceph stores for client-generated payload data is also stored either as separate Ceph Objects or within existing objects alongside payload data. Each object is identified by a unique name. Once a name is assigned to a newly created object, no other objects can be created with that exact name in the same namespace within a cluster.

Objects in Ceph are called Reliable, Autonomic, Distributed Object Store (RADOS) objects, and operations on them can be performed by using the rados command line tool. It facilitates a balanced distribution of data and workloads across a heterogeneous cluster that can grow or shrink in capacity dynamically. It provides all its client applications (including RBD and RGW) the illusion of a single logical object store with safe semantics and strong consistency guarantees.

Note

It's important to remember the distinction between the RADOS objects that Ceph manages...