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

Understanding the VSM architecture


In this recipe, we will quickly go through the architecture of VSM, which consists of the following components:

The VSM controller

VSM is a web-based application that is typically hosted on a controller machine, which is referred to as a VSM controller node. You can use a dedicated physical or virtual server that can act as a VSM controller node. The VSM controller software is the core component of VSM that connects to the Ceph cluster through VSM agents. The VSM controller gathers all the data coming from VSM agents and monitors the Ceph cluster. For operations such as cluster creation, pool creation, and so on, the VSM controller sends instructions to VSM agents to perform the required operation. As shown in the following diagram, Ceph administrators/operators connect to the VSM controller node via HTTPs or APIs, and they can use VSM software. The VSM controller node also connects to the OpenStack controller to configure OpenStack to use Ceph. In addition...