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)

Profiling Ceph memory

Memory profiling is the process of dynamic program analysis using TCMalloc to determine a program's memory consumption and identify ways to optimize it. In this recipe, we discuss how you can use memory profilers on the Ceph daemons for memory investigation.

How to do it...

Let's see how to profile memory use for the Ceph daemons running on our nodes:

  1. Start the memory profiler on a specific daemon:
        # ceph tell osd.2 heap start_profiler
To auto-start the profiler as soon as the Ceph osd daemon starts, set the environment variable as CEPH_HEAP_PROFILER_INIT=true.

It's a good idea to keep the profiler running for a few hours so that it can collect as much information related to...