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Preface

With the continuous development of IT, its application field is also changing and deepening with each passing day, which provides more and more abundant tools and means for information communication between people, people and things, and things and things, and profoundly changes people's life and mode of production today.

In recent years, with the rise of cloud computing applications (such as Ali nail, field 365, cloud OA, decoration and other industry segments ERP cloud applications, etc.), a large number of innovative Internet enterprises have emerged, and at the same time, the majority of small and micro enterprises have taken the express train of enterprise informatization. For users, the biggest advantage of public cloud applications is low barriers to use, but the outstanding disadvantage is security issues, user data and privacy are difficult to be adequately protected. Recently, the heated discussion about the data leakage of tens of millions of users of Facebook has made people think more rationally when making a choice. On the other hand, the hardware facilities needed to build a private cloud not only have a sharp reduction in overall cost compared with traditional IT, but also continue to improve the performance-to-price ratio. The author believes that the two will coexist and integrate with each other for a long time, and both have their own best application scenarios and market segments. Nowadays, some enterprises choose to rent VPS (Virtual Private Server Virtual Private Server) as a compromise, which is exactly the same as the private cloud solution except that they do not have to buy their own hardware.

The nickname of this book is "Building a Private Cloud platform for Modern small and medium-sized Enterprises: a complete case study".

Content introduction

Through a complete case, this book introduces in detail the complete implementation process of modern enterprise self-built IT application platform from "requirements-> Design-> implementation". The book is divided into seven chapters (including: case design, headquarters local network, virtualization platform, network platform, network management platform, application platform and current × × public applications) and three appendices. The case enterprise is a new IT company with branches. Compared with ordinary enterprise cases, there is more design and implementation of a "user remote hosting platform".

The experimental environment of this book has been carefully designed, on the premise of ensuring that it is the same as the implementation and results of the actual environment, fully considering the minimization of the experimental environment to meet the learning and experimental needs of the majority of readers. At the same time, the download link of the network resources of this book provides all the software installation packages and topology diagrams involved in this book for readers to download and use.

This book is divided into two volumes (platform and application), the content is relatively independent, for the convenience of readers.

Book characteristics

1. Only one case, simplicity is not simple: "small and medium-sized enterprises with branches are now × × × public IT platform construction."

2. The scheme design and implementation of "user experience as the center" can directly implement the content of this book in the actual environment of the enterprise.

3. Application technology integration: network (link aggregation, multiple × ×, IGP routing protocols, firewalls, QoS, etc.), virtualization (VMware), Windows Server applications (distributed domain environment applications, distributed file sharing services, etc.)

4. High integration of application technology: for example, in the practical scheme of Direct Access, not only the problem of Kerberos authentication agent caused by domestic Internet supervision is solved, but also the flow control requirements in practical applications are met through QoS in the network layer.

5. Engineering level configuration Guide: from requirements-> Design-> configuration, the final project quality goal can be achieved smoothly, quickly and correctly according to the step order of this book. The contents of the article as a reference are all concentrated in the appendix chapters of the book, which not only ensures the integrity of the content, but also maintains the fluency in the use of the book. Efficient production like an assembly line is one of the original intentions of this book.

6. The experimental environment is easy to build: on the premise of ensuring that the implementation and results of the actual environment are the same, this book fully considers the minimization of the experimental environment to meet the learning and experimental needs of the majority of readers.

The purpose of this book

The original intention: to improve the efficiency and level of the company's internal technical team, the corresponding questions are as follows:

1, in the face of similar cases of engineering projects, over-reliance on a small number of "awesome" experience, prone to omissions, deep hidden problems, difficult to find, difficult to control quality, long project cycle, high late maintenance costs, in the client also affected the company's reputation.

2. The interface of team division is not clear, the efficiency is low, the responsibility of the problem is unclear, and it is easy to pass the buck to each other.

3. The growth of new employees is slow, and the purpose of learning is not clear.

Applicable readers: peer (IT system Integration Company) system engineers, teachers and students of secondary and higher vocational colleges, information center administrators, enterprise network management, and IT technology enthusiasts.

Requirements for readers: have some familiarity and understanding of computer network, virtualization technology and Windows Server products.

Introduction to the author

The author (Hu Jianyuan) is now the Technical Director and Product and solution Manager of Changde Zhifeng Information Technology Co., Ltd.

The author has been engaged in product research and development, solution development, product planning and other related work in well-known IT enterprises such as Huawei Technology, ZTE and Ruijie Network. Until the establishment of Changde Zhifeng Information Technology Co., Ltd., I still keep an undiminished interest in the application of the latest IT technology, and pay more attention to the production of new technologies and the construction of technical teams.

Link: https://pan.baidu.com/s/10OiV-SJ4dzmvx_OVg-cCug extraction code: ybxa

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