Book Image

Ceph Cookbook

Book Image

Ceph Cookbook

Overview of this book

Ceph is a unified, distributed storage system designed for excellent performance, reliability, and scalability. This cutting-edge technology has been transforming the storage industry, and is evolving rapidly as a leader in software-defined storage space, extending full support to cloud platforms such as Openstack and Cloudstack, including virtualization platforms. It is the most popular storage backend for Openstack, public, and private clouds, so is the first choice for a storage solution. Ceph is backed by RedHat and is developed by a thriving open source community of individual developers as well as several companies across the globe. This book takes you from a basic knowledge of Ceph to an expert understanding of the most advanced features, walking you through building up a production-grade Ceph storage cluster and helping you develop all the skills you need to plan, deploy, and effectively manage your Ceph cluster. Beginning with the basics, you’ll create a Ceph cluster, followed by block, object, and file storage provisioning. Next, you’ll get a step-by-step tutorial on integrating it with OpenStack and building a Dropbox-like object storage solution. We’ll also take a look at federated architecture and CephFS, and you’ll dive into Calamari and VSM for monitoring the Ceph environment. You’ll develop expert knowledge on troubleshooting and benchmarking your Ceph storage cluster. Finally, you’ll get to grips with the best practices to operate Ceph in a production environment.
Table of Contents (18 chapters)
Ceph Cookbook
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Creating Ceph pools on specific OSDs


A Ceph cluster typically consists of several nodes having multiple disk drives. And, these disk drives can be of mixed types. For example, your Ceph nodes might contain disks of the types SATA, NL-SAS, SAS, SSD, or even PCIe, and so on. Ceph provides you with flexibility to create pools on specific drive types. For example, you can create a high performing SSD pool from a set of SSD disks, or you can create a high capacity, low cost pool using the SATA disk drives.

In this recipe, we will understand how to create a pool named ssd-pool backed by SSD disks, and another pool named sata-pool, which is backed by SATA disks. To achieve this, we will edit CRUSH maps and make the necessary configurations.

The Ceph cluster that we deployed and have played around with in this book is hosted on virtual machines and does not have real SSD disks backing it. Hence, we will be assuming we have a few virtual disks as SSD disks for learning purposes. There will be no change...