Book Image

Mastering Ceph

By : Nick Fisk
Book Image

Mastering Ceph

By: Nick Fisk

Overview of this book

Mastering Ceph covers all that you need to know to use Ceph effectively. Starting with design goals and planning steps that should be undertaken to ensure successful deployments, you will be guided through to setting up and deploying the Ceph cluster, with the help of orchestration tools. Key areas of Ceph including Bluestore, Erasure coding and cache tiering will be covered with help of examples. Development of applications which use Librados and Distributed computations with shared object classes are also covered. A section on tuning will take you through the process of optimisizing both Ceph and its supporting infrastructure. Finally, you will learn to troubleshoot issues and handle various scenarios where Ceph is likely not to recover on its own. By the end of the book, you will be able to successfully deploy and operate a resilient high performance Ceph cluster.
Table of Contents (12 chapters)


As mentioned, Ansible will be the orchestration tool of choice for this book, let's look at it in a bit more detail.

Ansible is an agentless orchestration tool written in Python, which uses SSH to carry out configuration tasks on remote nodes. It was first released in 2012 and has gained widespread adoption, and it is known for its ease of adoption and low learning curve. Red Hat purchased the commercial company Ansible, Inc. in 2015 and so has a very well-developed and close-knit integration for deploying Ceph.

Files named playbooks are used in Ansible to describe a list of commands, actions, and configurations to carry out on specified hosts or groups of hosts and are stored in a YAML file format. Instead of having large unmanageable playbooks, Ansible roles can be created that allow a playbook to contain a single task, which may then carry out a number of tasks associated with the role.

The use of...