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

Accessing CephFS via kernel driver


Native support for Ceph has been added in Linux kernel 2.6.34 and the later versions. In this recipe, we will demonstrate how to access CephFS via the Linux kernel driver on ceph-client1.

How to do it…

  1. Check your client's Linux kernel version:

    # uname -r
    
  2. Create a mount point directory:

    # mkdir /mnt/cephfs
    
  3. Get the keys for the clieht.cephfs user, which we created in the last section. Execute the following command from the Ceph monitor node to get the user keys:

    # ceph auth get-key client.cephfs
    
  4. Mount CephFS using the native Linux mount call with the following syntax:

    Syntax: mount -t ceph <Monitor_IP>:<Monitor_port>:/ <mount_point_name> -o name=admin,secret=<admin_user_key>

    # mount -t ceph ceph-node1:6789:/ /mnt/cephfs -o name=cephfs,secret=AQAGSF5VMIDWHhAAox9s/oHg/6FPzf4xRQV73Q==
    
  5. To mount CephFS more securely, avoiding the admin key being visible in the command history, store the admin keyring as plain text in a separate file and...