Book Image

Learning Ceph - Second Edition

By : Karan Singh, Vaibhav Bhembre, Anthony D'Atri
Book Image

Learning Ceph - Second Edition

By: Karan Singh, Vaibhav Bhembre, Anthony D'Atri

Overview of this book

Learning Ceph, Second Edition will give you all the skills you need to plan, deploy, and effectively manage your Ceph cluster. You will begin with the first module, where you will be introduced to Ceph use cases, its architecture, and core projects. In the next module, you will learn to set up a test cluster, using Ceph clusters and hardware selection. After you have learned to use Ceph clusters, the next module will teach you how to monitor cluster health, improve performance, and troubleshoot any issues that arise. In the last module, you will learn to integrate Ceph with other tools such as OpenStack, Glance, Manila, Swift, and Cinder. By the end of the book you will have learned to use Ceph effectively for your data storage requirements.

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Table of Contents (18 chapters)
Title Page
Title Page
Credits
Credits
About the Authors
About the Authors
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Customer Feedback
Customer Feedback
Preface
Preface
Free Chapter
1
Introducing Ceph Storage
Introducing Ceph Storage
The history and evolution of Ceph
New since the first edition
The future of storage
Ceph compared to other storage solutions
Summary
2
Ceph Components and Services
Ceph Components and Services
Introduction
Core components
Core services
Summary
3
Hardware and Network Selection
Hardware and Network Selection
Introduction
Hardware selection criteria
Memory
Storage drives
Controllers
Processors
Summary
4
Planning Your Deployment
Planning Your Deployment
Layout decisions
Architectural decisions
Operating system decisions
Networking decisions
Summary
5
Deploying a Virtual Sandbox Cluster
Deploying a Virtual Sandbox Cluster
Installing prerequisites for our Sandbox environment
Bootstrapping our Ceph cluster
Deploying our Ceph cluster
Scaling our Ceph cluster
Summary
6
Operations and Maintenance
Operations and Maintenance
Topology
Configuration
Scrubs
Logs
Common tasks
Working with remote hands
Summary
7
Monitoring Ceph
Monitoring Ceph
Monitoring Ceph clusters
Monitoring Ceph MONs
Monitoring Ceph OSDs
Monitoring Ceph placement groups
Monitoring Ceph MDS
Open source dashboards and tools
Summary
8
Ceph Architecture: Under the Hood
Ceph Architecture: Under the Hood
Objects
Placement groups
Setting PGs on pools
CRUSH
Ceph pools
Summary
9
Storage Provisioning with Ceph
Storage Provisioning with Ceph
Client Services
Ceph Block Device (RADOS Block Device)
The Ceph Filesystem (CephFS)
Ceph Object Storage (RADOS Gateway)
Summary
10
Integrating Ceph with OpenStack
Integrating Ceph with OpenStack
Introduction to OpenStack
The Best Choice for OpenStack storage
Virtual OpenStack Deployment
Summary
11
Performance and Stability Tuning
Performance and Stability Tuning
Ceph performance overview
Kernel settings
Network settings
Ceph settings
Client settings
Benchmarking
Summary

Ceph Object Storage (RADOS Gateway)

Ceph provides us more abstractions other than RBD images and CephFS to store and access data. One of the most widely used is the object storage system. An object storage system is one where files can be uploaded to and downloaded from storage servers using simple and conventional protocols such as HTTP.

Ceph's RADOS Gateway (RGW) storage service aims to fill this need by presenting Amazon S3-compatible and OpenStack Swift-compatible interfaces atop RADOS objects. There are abundant GUI clients, command line clients, and SDKs for every major programming language that supports Amazon S3. Clients talking to object storage systems need only to know how to leverage these widely-available tools to store and retrieve files.

In order to show how to provision an RGW service, we will again use the sandbox cluster we created in Chapter 5, Deploying a Virtual Sandbox Cluster. When deploying in production you most likely will want to configure the RGW service on dedicated...

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