Book Image

Ceph: Designing and Implementing Scalable Storage Systems

By : Michael Hackett, Vikhyat Umrao, Karan Singh, Nick Fisk, Anthony D'Atri, Vaibhav Bhembre
Book Image

Ceph: Designing and Implementing Scalable Storage Systems

By: Michael Hackett, Vikhyat Umrao, Karan Singh, Nick Fisk, Anthony D'Atri, Vaibhav Bhembre

Overview of this book

This Learning Path takes you through the basics of Ceph all the way to gaining in-depth understanding of its advanced features. You’ll gather skills to plan, deploy, and manage your Ceph cluster. After an introduction to the Ceph architecture and its core projects, you’ll be able to set up a Ceph cluster and learn how to monitor its health, improve its performance, and troubleshoot any issues. By following the step-by-step approach of this Learning Path, you’ll learn how Ceph integrates with OpenStack, Glance, Manila, Swift, and Cinder. With knowledge of federated architecture and CephFS, you’ll use Calamari and VSM to monitor the Ceph environment. In the upcoming chapters, you’ll study the key areas of Ceph, including BlueStore, erasure coding, and cache tiering. More specifically, you’ll discover what they can do for your storage system. In the concluding chapters, you will develop applications that use Librados and distributed computations with shared object classes, and see how Ceph and its supporting infrastructure can be optimized. By the end of this Learning Path, you'll have the practical knowledge of operating Ceph in a production environment. This Learning Path includes content from the following Packt products: • Ceph Cookbook by Michael Hackett, Vikhyat Umrao and Karan Singh • Mastering Ceph by Nick Fisk • Learning Ceph, Second Edition by Anthony D'Atri, Vaibhav Bhembre and Karan Singh
Table of Contents (27 chapters)
Title Page
About Packt
Contributors
Preface
Index

Introduction


A single zone configuration typically consists of one zone group, containing one zone and one or more RGW instances, where you may load balance gateway client requests between instances. In a single zone configuration, typically, multiple gateway instances point to a single Ceph storage cluster. With the Jewel release, Ceph supports several multi-site configuration options for the Ceph Object Gateway:

  • Zone: In a zone, one or more Ceph Object Gateways are logically grouped.
  • Zone group: A zone group is a container of multiple zones. In a multi-site configuration there should be a master zone group.  All the changes to configurations are handled by the master zone group.
  • Realm: A realm can have multiple zone groups. It allows separation of the zone groups themselves between clusters. There can be multiple realms for having different configurations in the same cluster.
  • Period: Every realm has a corresponding current period. Each period is a container of an epoch and an unique id. A...