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)

Troubleshooting network issues

Ceph storage depends highly upon the underlying network configuration and having a dedicated and reliable network connection. The network is one of the most important pieces in the cluster and is used by Ceph nodes in order to communicate with each other. An issue with the networking infrastructure can cause numerous issues on the Ceph cluster, from flapping OSDs (OSDs going down and up) to monitoring clock skew errors. Additionally, networking errors, such as packet loss or high latency, can cause stability and performance issues throughout the cluster.

How to do it...

If a cluster communication issue is suspected, here are some initial checks that can be undertaken:

  1. Verify that the ceph.conf...