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

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 pre-flight 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 pre-flight configuration using the shell script file, ceph-cookbook/vsm/post-deploy.sh, present in the GIT 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 know what Vagrant did in the background.

How to do it…

  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 cephuser
    # echo 'cephuser:cephuser' | chpasswd
    # echo "cephuser ALL=(ALL)       NOPASSWD: ALL" >> /etc...