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

Understanding Ceph object storage


Object storage cannot be directly accessed by an operating system as a disk of filesystem. Rather, it can only be accessed via API at the application level. Ceph is a distributed object storage system that provides an object storage interface via the Ceph object gateway, also known as the RADOS Gateway (RGW) interface, which has been built on top of the Ceph RADOS layer. The RGW uses librgw (RADOS Gateway Library) and librados, allowing applications to establish a connection with Ceph object storage. The RGW provides applications with a RESTful S3/Swift-compatible API interface to store data in the form of objects in the Ceph cluster. Ceph also supports multitenant object storage, accessible via RESTful API. In addition to this, the RGW also supports Ceph Admin APIs that can be used to manage the Ceph storage cluster using native API calls.

The librados software libraries are very flexible and can allow user applications to directly access the Ceph storage...