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

Creating a Ceph cluster using VSM


In the last recipe, we just installed VSM; we do not yet have a Ceph cluster. In this recipe, we will create the Ceph cluster using VSM so that VSM can manage this cluster later. You will find that deploying the Ceph cluster is extremely easy with VSM.

How to do it...

To create the Ceph cluster from the VSM dashboard, navigate to Cluster Management | Create Cluster, and then click on the Create Cluster button.

VSM Dashboard create cluster section

If you check preceding screenshot, version 2.2.0 has the Import Cluster tab. As 2.20 is still in beta, we need to use a couple of hacks:

  1. Disable MDSs and RGWs and restart vsm-api.

Open file /usr/lib/python2.7/site-packages/vsm/api/v1/clusters.py.

The file can be found at https://github.com/01org/virtual-storage-manager/blob/master/source/vsm/vsm/api/v1/clusters.py.

RGW is already disabled, we need to do it for MDS also:

        /etc/init.d/vsm-api restart
  1.  Disable MDSs and RGWs and restart vsm-scheduler:

Open file /usr/lib...