Book Image

Ceph Cookbook - Second Edition

By : Karan Singh, Hackett, Umrao
Book Image

Ceph Cookbook - Second Edition

By: Karan Singh, Hackett, Umrao

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)

Ceph admin socket

Ceph components are daemons and Unix-domain sockets. Ceph allows us to use these sockets to query its daemons. The Ceph admin socket is a powerful tool to get and set the Ceph daemon configurations at runtime. With this tool, changing the daemon configuration values becomes a lot easier, rather than changing the Ceph configuration file, which requires the daemon to restart.

To do this, you should log in to the node running the Ceph daemons and execute the ceph daemon commands.

How to do it...

There are two ways to access the admin socket:

  1. Using the Ceph daemon-name:
        $ sudo ceph daemon {daemon-name} {option} 
  1. The default location is /var/run/ceph. Using the absolute path of the socket file:
  ...