Service Availability

List of Contributors xiii Foreword xv Preface xix Acknowledgments xxv List of Abbreviations xxvii Part I INTRODUCTION TO SERVICE AVAILABILITY 1 Definitions, Concepts, and Principles 3 Francis Tam 1.1 Introduction 3 1.2 Why Service Availability? 4 1.3 Service Availability Fundamentals 6 1.4 Achieving Service Availability 13 1.5 Conclusion 20 2 The Birth of the Service Availability Forum 23 Francis Tam 2.1 Introduction 23 2.2 Technology Environment 23 2.3 Business Environment 24 2.4 The Service Availability Forum Era 27 2.5 Concluding Remarks 28 Part II THE SA FORUM SYSTEM: SERVICES AND FRAMEWORKS 3 Overview of the Service Availability Architecture 33 Dave Penkler 3.1 Introduction 33 3.2 HA Concepts Applied 39 3.3 Architecture 43 3.4 Open Issues 59 3.5 Conclusion 62 4 The SA Forum Information Model: The Heart of Control and Monitoring 63 Maria Toeroe 4.1 Introduction 63 4.2 Background 64 4.3 The SA Forum Information Model 67 4.4 Conclusion 83 5 Consistent and High Level Platform View 85 Maria Toeroe 5.1 Introduction 85 5.2 Hardware Platform Interface 86 5.3 Platform Management Service 96 5.4 Cluster Membership Service 121 5.5 Conclusion 131 6 Model Based Availability Management: The Availability Management Framework 133 Maria Toeroe 6.1 Introduction 133 6.2 Background 134 6.3 The Availability Management Framework 138 6.4 Conclusion 191 7 Communication and Synchronization Utilities 193 Maria Toeroe and Sayandeb Saha 7.1 Introduction 193 7.2 Event Service 194 7.3 Message Service 202 7.4 Checkpoint Service 212 7.5 Conclusion 223 8 Services Needed for System Management 227 Maria Toeroe 8.1 Introduction 227 8.2 Log Service 228 8.3 Notification Service 236 8.4 Information Model Management Service 247 8.5 Conclusion 262 9 Model-Based Software Management: The Software Management Framework 265 Maria Toeroe 9.1 Introduction 265 9.2 Background 266 9.3 Software Management a la Carte 268 9.4 Conclusion 294 10 Combining the Services 297 Maria Toeroe 10.1 Introduction 297 10.2 Application Design and Development 297 10.3 Application Platform Design 299 10.4 Operation and Maintenance 301 Part III SA FORUM MIDDLEWARE IN ACTION 11 SA Forum Programming Model and API Conventions 305 Francis Tam 11.1 Introduction 305 11.2 Programming Model 306 11.3 Making Sense of the API Specifications 312 11.4 Practical Topics 316 11.5 Concluding Remarks 322 12 SA Forum Java Mappings: Specifications, Usage, and Experience 325 Robert Hyerle and Jens Jensen 12.1 Introduction 325 12.2 Background 325 12.3 Understanding the Java Mappings 328 12.4 Using the Java Mappings 335 12.5 Going Further 343 13 SA Forum Middleware Implementations 347 Mario Angelic and Ulrich Kleber 13.1 Introduction 347 13.2 The OpenHPI Project 348 13.3 The OpenSAF Project 355 13.4 Conclusion 368 14 Integration of the VideoLAN Client with OpenSAF: An Example 371 Anik Mishra and Ali Kanso 14.1 Introduction 371 14.2 Going Under the Hood: The VLC Workflow 372 14.3 Integrating VLC with OpenSAF 373 14.4 Summary and Conclusion 387 15 Migration Paths for Legacy Applications 391 Mario Angelic 15.1 Introduction 391 15.2 Reasons for Migration 392 15.3 Integration Criteria 393 15.4 How to Migrate 399 15.5 Open Issues 413 15.6 Conclusion 413 16 Overcoming Complexity: Formal Modeling Techniques at the Rescue 415 Maria Toeroe and Ferhat Khendek 16.1 Introduction 415 16.2 Background 416 16.3 Model-Based Software Management 419 16.4 Conclusion 428 17 Conclusion 431 17.1 Summary 431 17.2 The Future 433 References 435 Index 443