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

Scaling out your Ceph cluster


From the roots, Ceph has been designed to grow from a few nodes to several hundreds, and it's supposed to scale on the fly without any downtime. In this recipe, we will dive deep into the Ceph scale-out feature by adding MON, OSD, MDS, and RGW nodes.

Adding the Ceph OSD

Adding an OSD node to the Ceph cluster is an online process. To demonstrate this, we would require a new virtual machine named ceph-node4 with three disks that will act as OSDs. This new node will then be added to our existing Ceph cluster.

How to do it…

Run the following commands from ceph-node1 until otherwise specified:

  1. Create a new node, ceph-node4, with three disks (OSD). You can follow the process of creating a new virtual machine with disks and the OS configuration, as mentioned in the Setting up virtual infrastructure recipe in Chapter 1, Ceph – Introduction and Beyond, and make sure ceph-node1 can ssh into ceph-node4.

    Before adding the new node to the Ceph cluster, let's check the current...