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

Configuring Glance for Ceph backend


We have completed the configuration required from the Ceph side. In this recipe, we will configure the OpenStack glance to use Ceph as a storage backend.

How to do it…

This recipe talks about configuring the glance component of OpenStack to store virtual machine images on Ceph RBD:

  1. Log in to os-node1, which is our glance node, and edit /etc/glance/glance-api.conf for the following changes:

    1. Under the [DEFAULT] section, make sure that the following lines are present:

      default_store=rbd
      show_image_direct_url=True
    2. Execute the following command to verify entries:

      # cat /etc/glance/glance-api.conf | egrep -i "default_store|image_direct"
      
    3. Under the [glance_store] section, make sure that the following lines are present under RBD Store Options:

      stores = rbd
      rbd_store_ceph_conf=/etc/ceph/ceph.conf
      rbd_store_user=glance
      rbd_store_pool=images
      rbd_store_chunk_size=8
    4. Execute the following command to verify the previous entries:

      # cat /etc/glance/glance-api.conf | egrep -v "#...