Book Image

Ceph Cookbook - Second Edition

By : Vikhyat Umrao, Karan Singh, Michael Hackett
Book Image

Ceph Cookbook - Second Edition

By: Vikhyat Umrao, Karan Singh, Michael Hackett

Overview of this book

Ceph is a unified distributed storage system designed for reliability and scalability. This technology has been transforming the software-defined storage industry and is evolving rapidly as a leader with its wide range of support for popular cloud platforms such as OpenStack, and CloudStack, and also for virtualized platforms. Ceph is backed by Red Hat and has been developed by community of developers which has gained immense traction in recent years. This book will guide you right from the basics of Ceph , such as creating blocks, object storage, and filesystem access, to advanced concepts such as cloud integration solutions. The book will also cover practical and easy to implement recipes on CephFS, RGW, and RBD with respect to the major stable release of Ceph Jewel. Towards the end of the book, recipes based on troubleshooting and best practices will help you get to grips with managing Ceph storage in a production environment. By the end of this book, you will have practical, hands-on experience of using Ceph efficiently for your storage requirements.
Table of Contents (15 chapters)

Configuring Nova to boot instances from Ceph RBD

In order to boot all OpenStack instances into Ceph, that is, for the boot-from-volume feature, we should configure an ephemeral backend for Nova. To do this, edit /etc/nova/nova.conf on the OpenStack node and perform the following changes.

How to do it…

This recipe deals with configuring Nova to store the entire virtual machines on the Ceph RBD:

  1. Navigate to the [libvirt] section and add the following:
        inject_partition=-2
images_type=rbd
images_rbd_pool=vms
images_rbd_ceph_conf=/etc/ceph/ceph.conf
rbd_user=cinder
rbd_secret_uuid= e279566e-bc97-46d0-bd90-68080a2a0ad8
  1. Verify your changes:
        # cat /etc/nova/nova.conf...