OpenStack Swift：权威指南

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"OpenStack Swift" 是一本关于OpenStack Swift存储服务的书籍，由Joe Arnold及SwiftStack团队成员撰写。该书详细介绍了OpenStack Swift这一开源云存储平台的技术细节和使用方法。 OpenStack Swift是一个分布式对象存储系统，常用于构建大规模、高可用、可扩展的云存储解决方案。它设计的目标是提供高度冗余和容错性，同时保持低延迟和高吞吐量，以满足现代云计算需求。Swift不是传统的文件系统，而是基于RESTful API的对象存储服务，允许用户通过简单的HTTP请求进行数据存取。在书中，作者们可能详细讲解了以下几个关键知识点： 1. **Swift架构**：Swift由多个组件构成，包括Proxy Server、Account Server、Container Server和Object Server。这些组件协同工作，处理请求并确保数据的一致性和可用性。Proxy Server处理客户端请求，Account和Container Server负责元数据管理，Object Server则实际存储数据。 2. **分布式特性**：Swift通过将数据分片并复制到多个节点来实现高可用性和容错性。通常，每个对象会有多个副本，分布在不同的物理位置，以防止单点故障。 3. **一致性模型**：Swift使用最终一致性模型，这意味着更新可能需要一段时间才能在整个系统中可见。这种设计是为了在大规模分布式环境中保持系统的性能。 4. **Swift API**：书中会详细介绍如何使用Swift的RESTful API进行数据操作，如上传、下载、列举和删除对象。API的使用使得Swift可以轻松集成到各种应用程序中。 5. **Swift扩展性**：Swift的设计允许无缝扩展，通过添加更多的服务器和存储节点来应对数据增长。这使得Swift能够适应从小型到大型企业的各种规模的需求。 6. **安全性与访问控制**：Swift支持多种安全措施，包括身份验证（Keystone）、访问控制列表（ACLs）以及加密。这些功能确保了数据的安全性和隐私。 7. **Swift在实际应用中的案例**：书中可能会分享一些使用Swift的实例，如媒体托管、备份服务、大数据分析等，展示如何利用Swift解决实际业务问题。 8. **部署与运维**：作者可能会详细讨论如何规划、安装和配置Swift环境，以及日常运维中的监控、故障排查和性能优化技巧。 9. **社区与开发**：OpenStack Swift是一个活跃的开源项目，书中可能包含如何参与社区、报告问题、贡献代码等内容，帮助读者更深入地了解和参与OpenStack生态。 "OpenStack Swift" 这本书全面覆盖了Swift的基础知识、高级特性以及实际应用，对于想要学习和部署OpenStack Swift的IT专业人员来说，是一本非常有价值的参考资料。

these systems work, and why and how they should be used. Now it’s my hope that this

book can deliver both practical and theoretical insights about an important and rapidly

evolving topic: object storage with Swift.

Before proceeding further, I’d like to share John Dickinson’s memories of working on

the original Swift development team. John explains why and how Swift was developed

and captures the collaborative and innovative spirit of OpenStack and the development

of Swift.

The Origins of Swift: From the Small to the Open

Recalled fondly by John Dickinson, OpenStack Swift Project Technical Lead, Director of

Technology at SwiftStack.

In 2008, Rackspace developed its Rackspace Cloud Files cloud storage service as a re‐

sponse to customer demands and as an answer to Amazon’s Simple Storage Service (S3).

The underlying technology developed for the first iteration of Rackspace Cloud Files

was great up to a point, but frankly required a lot of time, effort, and money to scale.

With unstructured data growing so rapidly, we knew we needed something better. So

in August 2009, Rackspace set a team to work developing a complete, ground up re‐

placement for their initial cloud storage platform. I was fortunate to be on the original

project team, code-named “Swift.”

A team of about nine of us set to work. None of us had specific roles. Mostly, we sat

around in a small, often hot room, on the fourth floor in downtown San Antonio, iden‐

tifying the hard problems we needed to solve. We were trying to figure out how we

would deploy Swift, what the network would look like, what the infrastructure to support

it was going to look like—all that good stuff. We were very collaborative, but we would

also compete to arrive at the best solution. We’d think about a problem and then go

home. Two people would come back the next day with implementations for it and we’d

choose the one we thought was better. There was a really great team dynamic and it was

an awesome experience. Ideas were always flying around that room and some of them

were crazy. But some of them worked out really well.

We worked on this for about a year and in July 2010, as part of the OpenStack project

that Rackspace cofounded with NASA, we released the source code for Swift under the

Apache 2 license. We contributed the Cloud Files Swift Code, which became OpenStack

Object Storage. In October 2010, a subsequent release of Swift, named “Austin,” which

included the compute orchestration framework contributed by NASA, was made public.

The first commercial deployments of Swift outside Rackspace were at Korea Telecom

and Internap, which used Swift to provide public cloud storage services. (That’s how I

came to know Joe Arnold, and ultimately join SwiftStack.) Swift is now used by web

companies, businesses of all sizes, life sciences companies, research organizations, and

service providers worldwide.

xiv | Preface

In the end, I think we created the kernel of a great cloud storage platform and I am proud

to have been part of that. But it is also very gratifying to be part of something larger.

When Rackspace Hosting made a short video about how Swift was made, we chose to

end with a shot of text receding into star-filled outer space. Our invocation of Star

Wars was partly tongue in cheek and partly serious. We really did and still do feel that

we’re part of a growing rebel force fighting the emergence of proprietary cloud stacks

and creating a standard way to deploy applications and connect clouds. We’re still part

of the minority, but our forces and capacities are growing, in large part because more

and more companies and developers are working with OpenStack Swift.

Why This Book?

At SwiftStack, a company that I cofounded in 2011, our big idea was to provide Swift

object storage with a management system so our customers could achieve (1) flexibility

in how (and where) they deployed their storage, (2) control of their data without being

locked in to a vendor, and (3) extremely economical private cloud storage.

These features are the essence of software-defined storage (SDS), a new term that is still

evolving. We think the term perfectly illustrates the fundamental change that Swift rep‐

resents. Key aspects of SDS are scalability, adaptability, and the ability to use most any

hardware. Operators can now make choices concerning how their storage is scaled and

managed, and how users can store and access data—all driven programmatically for the

entire storage tier, regardless of where the storage resources are deployed. SwiftStack

was very early in this trend and was one of the first to offer an SDS storage controller

to manage commodity storage hardware.

SwiftStack is dedicated to delivering and improving Swift solutions because we believe

that data storage should scale globally, without technical constraints, limits, or lock-in.

When data-centric organizations and data-centric applications can grow unconstrain‐

ed, they will be able to discover and take advantage of new opportunities and innovations

in their industries.

This book was started as a way to voice those beliefs. We are highlighting SDS, which

is a fundamental change that is happening in the storage sector. Of course, we will shine

the spotlight brightly on understanding the Swift object storage project and we will

introduce SwiftStack. We bring not just our ideas—but the experience of the entire

SwiftStack team. SwiftStack is fortunate to include some of the founders of Swift and

top contributing Swift developers. Together, we have learned much from real-world

deployments, large and small, which we will share with you throughout this book.

Preface | xv

Who Should Read This Book?

OpenStack Swift is written for deployers, operators, and developers interested in using

Swift. Although it’s not necessary to read this book cover to cover, we make an attempt

to provide the topics in a logical order.

This book attempts to explain Swift in clear and simple terms so that anyone can un‐

derstand the basic concepts and principles, though a few skills will be useful to get the

most out of this book. We assume some familiarity with Linux administration, net‐

working, and storage. Additionally, basic programming skills will come in handy for

the chapters covering the Swift API. We offer programming overviews on Python, Ruby,

PHP, and Java.

This book aims to help newcomers learn from our experiences. Our goal is to get you

up and running more quickly and easily, making your successful conversion to Swift,

well, swifter!

What’s in This Book?

This book has three major components. Part I (Chapters 1 through 4) covers the fun‐

damentals of Swift in a way we hope is accessible to all our readers. Think of it as a Swift

boot camp. We aim to familiarize you with the architecture, history, use cases, and basic

operation of Swift.

Part II (Chapters 5 through 8) is geared to developers who want to get the most out of

their Swift cluster. A big shift has happened with the transition from filesystems to

objects, and these chapters will provide a foundation on how to use an HTTP-

addressable object storage system. How to use Swift—and how not to use Swift—will

be covered in gruesome detail.

The next major component of the book is for storage operators, architects, and systems

administrators. We break this section into three parts—installation, planning a deploy‐

ment, and ongoing operations. Part III (Chapters 9 and 10) covers Swift installation

options. Part IV (Chapters 11 through 14) offers guidance on deployment considera‐

tions: hardware, networking, and Swift features of interest to operators. Finally, Part V

(Chapters 15 through 17) covers what to do when (not if) something goes wrong.

Depending on your interests, here are a few possible itineraries through the book:

• If you’re responsible for designing and architecting a Swift cluster, read Part I, then

check out Part IV.

• If you’re a developer, after reading Part I, continue with Part II to learn about Swift

and its API.

xvi | Preface

Using Code Examples

This book aims to help you work effectively with Swift. In general, you may use the code

in this book in your programs and documentation. You do not need to contact us for

permission unless you’re reproducing a significant portion of the code. For example,

writing a program that uses several chunks of code from this book does not require

permission. Selling or distributing a CD-ROM of examples does require permission.

Answering a question by citing this book and quoting example code does not require

permission. Incorporating a significant amount of example code from this book into

your product’s documentation does require permission.

We appreciate, but do not require, attribution. An attribution usually includes the title,

author, and publication year. For example: “OpenStack Swift, by Joe Arnold and mem‐

978-1-491-90082-6.”

If you feel your use of code examples falls outside fair use or the permission given here,

feel free to contact us via email (

contact@swiftstack.com).

Examples will be maintained at http://swiftstack.com/book/.

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xviii | Preface

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资源: 5

OpenStack Swift：权威指南

OpenStack Swift对象存储在SSD上的优化

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oio-swift:Openstack Swift 网关和中间件的 Openio 风格，允许通过 Openstack Swift 网关访问 OpenIO SDS

sakai-openstack-swift:Openstack Swift酒井资源

patch-openstack-swift:OpenStack Swift 上的 LightSync 补丁

swift:OpenStack Swift API

OpenStack Swift 无水印pdf

puppet-swift:OpenStack Swift Puppet模块

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