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Managed Services for Grid Technology

10,000 3,000

Topic Description

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Summary
This project will examine two main areas of interest. Firstly it will study grid technology: a meta-computing infrastructure to enable distributed computing. It will examine the motivations for grid technology, the architecture and existing grids. The Globus toolkit, a middleware toolkit which enables grid environment will also be examined.
Secondly it will study the area of the Service Provider. It will look at the services already offered by Service Providers, the technology behind them and the motivations for using a Service Provider.
It seeks to explore how a Service Provider could utilize grid technology to offer new services to its customers and to see if this is beneficial over existing technologies. It will then discuss different ways in which this solution could be implemented.
A GridFTP web service was chosen for design and implementation. The benefits of implementing a service in web services are explained. It is designed and implemented to enable file transfer throughout the test grid environment in the Informatics department of the university using the GridFTP protocol.
Evaluation of the service shows that the system was almost completed and that it could be distributed, although not in the manner intended during the design. The project is evaluated on several criteria and shown to be a success overall.
Suggestions are offered as to how the system could be improved and future designs that could be developed in new projects such as a security service that could be implemented.

CONTENTS
PROJECT MANAGEMENT………………………………………. 1
1.1 INTRODUCTION……………………………………………………………………………………………………………….1
1.2 OBJECTIVES ……………………………………………………………………………………………………………………1
1.3 MINIMUM REQUIREMENTS………………………………………………………………………………………………..2
1.4 TIMELINE……………………………………………………………………………………………………………………….2
1.5 ACHIEVEMENTS ………………………………………………………………………………………………………………3
1.6 PROBLEMS ENCOUNTERED ……………………………………………………………………………………………….4
1.7 SUMMARY ……………………………………………………………………………………………………………………..4
THE GRID………………………………………………………………. 5
2.1 INTRODUCTION……………………………………………………………………………………………………………….5
2.2 WHAT IS THE GRID?…………………………………………………………………………………………………………5
2.3 WHY IS THE GRID NEEDED? ……………………………………………………………………………………………..6
2.4 GRID INFRASTRUCTURE……………………………………………………………………………………………………7
2.5 CURRENT STATUS & EXAMPLE GRIDS………………………………………………………………………………..9
2.6 THE GLOBUS TOOLKIT……………………………………………………………………………………………………10
2.6.1 Resource Management (GRAM) ……………………………………………………………………………..11
2.6.2 Information Services (MDS) …………………………………………………………………………………..11
2.6.3 Security Services (GSI) ………………………………………………………………………………………….11
2.6.4 Data Management (GridFTP)………………………………………………………………………………….12
2.6.4 Using Globus ………………………………………………………………………………………………………..13
2.7 WEB SERVICES ……………………………………………………………………………………………………………..13
2.7.1 eXtensible Mark-up Language (XML)……………………………………………………………………….14
2.7.2 Simple Object Access Protocol (SOAP) …………………………………………………………………….14
2.7.3 Web Services Description Language (WSDL) ……………………………………………………………15
2.8 WEB SERVICES AND THE GRID ………………………………………………………………………………………..15
2.8 SUMMARY ……………………………………………………………………………………………………………………15
SERVICE PROVIDERS ………………………………………….. 16
3.1 INTRODUCTION……………………………………………………………………………………………………………..16
3.2 WHAT IS A SERVICE PROVIDER (SP)? ……………………………………………………………………………….16
3.2 THE MARKET………………………………………………………………………………………………………………..17
3.4 TYPES OF SERVICE…………………………………………………………………………………………………………17
3.4.1 Co-Location:…………………………………………………………………………………………………………18
3.4.2 Application Hosting:………………………………………………………………………………………………18
3.4.3 Full Managed/Dedicated Services:…………………………………………………………………………..19
3.4.5 Storage Services…………………………………………………………………………………………………….19
3.4.6 Web Hosting Services……………………………………………………………………………………………..19
3.4.7 Meta Services ………………………………………………………………………………………………………..20
3.5 TECHNOLOGY USED BY SPS: …………………………………………………………………………………………..20
3.5.1 Infrastructure ………………………………………………………………………………………………………..20
3.5.2 Virtual Private Networks (VPNs)……………………………………………………………………………..21
3.5.3 Web Hosting………………………………………………………………………………………………………….21
3.6 HOW DOES GRID TECHNOLOGY RELATE TO AN ISP …………………………………………………………….22
3.7 SUMMARY ……………………………………………………………………………………………………………………24
DESIGN CHOICES………………………………………………… 25
4.1 INTRODUCTION: …………………………………………………………………………………………………………….25
4.2 EXISTING TECHNOLOGY: ………………………………………………………………………………………………..25
4.2 DESIGN ISSUES: …………………………………………………………………………………………………………….25
4.2.1 Storage Management:…………………………………………………………………………………………….25
4.2.2 Security: ……………………………………………………………………………………………………………….26
4.2.3 Application management: ……………………………………………………………………………………….26
4.2.4 Resource Management:…………………………………………………………………………………………..26
V
4.3 DESIGN DECISION………………………………………………………………………………………………………….27
4.4 DESIGN MODEL: ……………………………………………………………………………………………………………28
4.5 GRIDFTP:…………………………………………………………………………………………………………………….29
4.7 HTML INTERFACE…………………………………………………………………………………………………………30
4.7 THE SERVICE ………………………………………………………………………………………………………………..31
IMPLEMENTATION……………………………………………….. 33
5.1 INTRODUCTION……………………………………………………………………………………………………………..33
5.2 IMPLEMENTATION………………………………………………………………………………………………………….33
5.3CREATING THE WEB SERVICE……………………………………………………………………………………………35
5.4 DIFFICULTIES………………………………………………………………………………………………………………..36
5.6 TESTING……………………………………………………………………………………………………………………….37
5.7 SUMMARY ……………………………………………………………………………………………………………………37
EVALUATION……………………………………………………….. 38
6.1 INTRODUCTION……………………………………………………………………………………………………………..38
6.2 GRIDFTP EVALUATION ………………………………………………………………………………………………….38
6.2.1 Criteria…………………………………………………………………………………………………………………38
6.2.2 Discussion…………………………………………………………………………………………………………….38
6.3 PROJECT EVALUATION……………………………………………………………………………………………………40
6.3.1 Criteria…………………………………………………………………………………………………………………40
6.3.1 Discussion…………………………………………………………………………………………………………….42
6.2 SUMMARY ……………………………………………………………………………………………………………………45
CONCLUSION………………………………………………………. 46
7.1 INTRODUCTION……………………………………………………………………………………………………………..46
7.2 PROJECT ACHIEVEMENTS ……………………………………………………………………………………………….46
7.3 FUTURE WORK ……………………………………………………………………………………………………………..47
7.4 SUMMARY ……………………………………………………………………………………………………………………47
REFERENCES………………………………………………………. 48
APPENDIX A: PERSONAL REFLECTIONS ……………………………………………………………………………………50
APPENDIX B: GLOBUS SCRIPTS USED DURING RESEARCH …………………………………………………………….51
APPENDIX C: TEST PLAN ………………………………………………………………………………………………………

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