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)

Managing the cluster configuration file

If you are managing a large cluster, it's good practice to keep your cluster configuration file (/etc/ceph/ceph.conf) updated with information about cluster MONs, OSDs, MDSs, and RGW nodes. With these entries in place, you can manage all your cluster services from a single node.

How to do it...

ceph-ansible manages all aspects of the ceph configuration file that we will be using to update our cluster configuration. In order to achieve this, we will be updating the Ceph configuration file using the ceph_conf_overrides section of the /etc/ansible/group_vars/all.yml file and will be adding the details of all MON, OSD, and MDS nodes. Ansible supports the same sections as the Ceph configuration...