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

Using Ceph cluster with a hands-on approach


Now that we have a running Ceph cluster, we will perform some hands-on practice to gain experience with Ceph, using some basic commands.

How to do it…

  1. Check the status of your Ceph installation:

    # ceph -s  or # ceph status
    
  2. Watch the cluster health:

    # ceph -w
    
  3. Check the Ceph monitor quorum status:

    # ceph quorum_status --format json-pretty
    
  4. Dump the Ceph monitor information:

    # ceph mon dump
    
  5. Check the cluster usage status:

    # ceph df
    
  6. Check the Ceph monitor, OSD, and placement group stats:

    # ceph mon stat
    # ceph osd stat
    # ceph pg stat
    
  7. List the placement group:

    # ceph pg dump
    
  8. List the Ceph pools:

    # ceph osd lspools
    
  9. Check the CRUSH map view of OSDs:

    # ceph osd tree
    
  10. List the cluster authentication keys:

    # ceph auth list
    

These were some basic commands that we learned in this section. In the upcoming chapters, we will learn advanced commands for Ceph cluster management.