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

Core components


One of Ceph's advantages over other storage solutions is the wide and extensible range of services that can be offered with a single backend to manage.

Reliable Autonomic Distributed Object Store (RADOS)

Ceph's foundation is a low-level data store named RADOS that provides a common backend for multiple user-consumable services.

RADOS is an object storage system layer that provides a data durability and availability framework that all user-facing Ceph services are layered atop. RADOS is:

  • Highly available with no single point of failure (SPoF)
  • Reliable and resilient
  • Self-healing
  • Self-managing
  • Adaptive
  • Scalable
  • Not found on the Galactica

RADOS manages the distribution of data within Ceph. Durability and availability of data are adaptively maintained by initiating operations as needed to recover from component failures and to balance the cluster when capacity is added or removed. Fundamental to this task is the CRUSH algorithm, which we will discuss in depth later. RADOS ensures that multiple...