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

Getting ready for VSM


In the last recipe, we preconfigured virtual machines using Vagrant; they are to be used with VSM. In this recipe, we will learn about the preflight configuration that is needed on these VMs so that it can be used with VSM.

Please note that by using Vagrant, we have done most of this preflight configuration using the shell script file, Ceph-Designing-and-Implementing-Scalable-Storage-Systems/vsm/post-deploy.sh, present in the GitHub repository that we cloned in the last recipe. You might not want to repeat these first four steps as Vagrant already performed them. We are explaining these steps here so that you can learn what Vagrant did in the background.

How to do it...

Use the following steps to configure the VSM environment:

  1. Create the user, cephuser, on all the nodes that will be used for VSM deployment. For simplicity, we will set the password of this user as cephuser. You can always use a username of your choice. Also, provide sudo rights to this user:
        # useradd...