DevOps: A Software Architect's Perspective
- By Len Bass, Ingo Weber, Liming Zhu
- Published May 8, 2015 by Addison-Wesley Professional. Part of the SEI Series in Software Engineering series.
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Description
- Copyright 2015
- Dimensions: 6-1/4" x 9-1/4"
- Pages: 352
- Edition: 1st
- eBook
- ISBN-10: 0-13-404990-X
- ISBN-13: 978-0-13-404990-8
The First Complete Guide to DevOps for Software Architects
DevOps promises to accelerate the release of new software features and improve monitoring of systems in production, but its crucial implications for software architects and architecture are often ignored.
In DevOps: A Software Architect’s Perspective, three leading architects address these issues head-on. The authors review decisions software architects must make in order to achieve DevOps’ goals and clarify how other DevOps participants are likely to impact the architect’s work. They also provide the organizational, technical, and operational context needed to deploy DevOps more efficiently, and review DevOps’ impact on each development phase. The authors address cross-cutting concerns that link multiple functions, offering practical insights into compliance, performance, reliability, repeatability, and security.
This guide demonstrates the authors’ ideas in action with three real-world case studies: datacenter replication for business continuity, management of a continuous deployment pipeline, and migration to a microservice architecture.
Comprehensive coverage includes
• Why DevOps can require major changes in both system architecture and IT roles
• How virtualization and the cloud can enable DevOps practices
• Integrating operations and its service lifecycle into DevOps
• Designing new systems to work well with DevOps practices
• Integrating DevOps with agile methods and TDD
• Handling failure detection, upgrade planning, and other key issues
• Managing consistency issues arising from DevOps’ independent deployment models
• Integrating security controls, roles, and audits into DevOps
• Preparing a business plan for DevOps adoption, rollout, and measurement
Sample Content
Table of Contents
Preface xi
Previewing the Book xiii
Acknowledgments xv
Legend xvii
Part I: Background 1
Chapter 1: What Is DevOps? 3
1.1 Introduction 3
1.2 Why DevOps? 7
1.3 DevOps Perspective 11
1.4 DevOps and Agile 12
1.5 Team Structure 13
1.6 Coordination 17
1.7 Barriers 20
1.8 Summary 23
1.9 For Further Reading 24
Chapter 2: The Cloud as a Platform 27
2.1 Introduction 27
2.2 Features of the Cloud 29
2.3 DevOps Consequences of the Unique Cloud Features 41
2.4 Summary 44
2.5 For Further Reading 45
Chapter 3: Operations 47
3.1 Introduction 47
3.2 Operations Services 47
3.3 Service Operation Functions 57
3.4 Continual Service Improvement 58
3.5 Operations and DevOps 59
3.6 Summary 61
3.7 For Further Reading 61
Part II: The Deployment Pipeline 63
Chapter 4: Overall Architecture 65
4.1 Do DevOps Practices Require Architectural Change? 65
4.2 Overall Architecture Structure 66
4.3 Quality Discussion of Microservice Architecture 72
4.4 Amazon’s Rules for Teams 75
4.5 Microservice Adoption for Existing Systems 76
4.6 Summary 77
4.7 For Further Reading 78
Chapter 5: Building and Testing 79
5.1 Introduction 79
5.2 Moving a System Through the Deployment Pipeline 81
5.3 Crosscutting Aspects 84
5.4 Development and Pre-commit Testing 86
5.5 Build and Integration Testing 91
5.6 UAT/Staging/Performance Testing 95
5.7 Production 96
5.8 Incidents 98
5.9 Summary 98
5.10 For Further Reading 99
Chapter 6: Deployment 101
6.1 Introduction 101
6.2 Strategies for Managing a Deployment 102
6.3 Logical Consistency 105
6.4 Packaging 111
6.5 Deploying to Multiple Environments 114
6.6 Partial Deployment 117
6.7 Rollback 118
6.8 Tools 121
6.9 Summary 121
6.10 For Further Reading 122
Part III: Crosscutting Concerns 125
Chapter 7: Monitoring 127
7.1 Introduction 127
7.2 What to Monitor 129
7.3 How to Monitor 134
7.4 When to Change the Monitoring Configuration 139
7.5 Interpreting Monitoring Data 139
7.6 Challenges 143
7.7 Tools 147
7.8 Diagnosing an Anomaly from Monitoring Data–the Case of Platformer.com 148
7.9 Summary 152
7.10 For Further Reading 153
Chapter 8: Security and Security Audits 155
8.1 What Is Security? 156
8.2 Threats 157
8.3 Resources to Be Protected 159
8.4 Security Roles and Activities 162
8.5 Identity Management 165
8.6 Access Control 169
8.7 Detection, Auditing, and Denial of Service 172
8.8 Development 173
8.9 Auditors 174
8.10 Application Design Considerations 175
8.11 Deployment Pipeline Design Considerations 176
8.12 Summary 177
8.13 For Further Reading 178
Chapter 9: Other Ilities 181
9.1 Introduction 181
9.2 Repeatability 183
9.3 Performance 186
9.4 Reliability 188
9.5 Recoverability 190
9.6 Interoperability 191
9.7 Testability 192
9.8 Modifiability 194
9.9 Summary 195
9.10 For Further Reading 196
Chapter 10: Business Considerations 197
10.1 Introduction 197
10.2 Business Case 197
10.3 Measurements and Compliance to DevOps Practices 206
10.4 Points of Interaction Between Dev and Ops 209
10.5 Summary 211
10.6 For Further Reading 211
Part IV: Case Studies 213
Chapter 11: Supporting Multiple Datacenters 215
11.1 Introduction 215
11.2 Current State 216
11.3 Business Logic and Web Tiers 216
11.4 Database Tier 220
11.5 Other Infrastructure Tools 223
11.6 Datacenter Switch 225
11.7 Testing 232
11.8 Summary 233
11.9 For Further Reading 234
Chapter 12: Implementing a Continuous Deployment Pipeline for Enterprises 237
12.1 Introduction 237
12.2 Organizational Context 238
12.3 The Continuous Deployment Pipeline 240
12.4 Baking Security into the Foundations of the CD Pipeline 257
12.5 Advanced Concepts 259
12.6 Summary 261
12.7 For Further Reading 262
Chapter 13: Migrating to Microservices 263
13.1 Introduction to Atlassian 263
13.2 Building a Platform for Deploying Microservices 265
13.3 BlobStore: A Microservice Example 268
13.4 Development Process 273
13.5 Evolving BlobStore 279
13.6 Summary 284
13.7 For Further Reading 284
Part V: Moving into the Future 285
Chapter 14: Operations as a Process 287
14.1 Introduction 287
14.2 Motivation and Overview 288
14.3 Offline Activities 289
14.4 Online Activities 294
14.5 Error Diagnosis 296
14.6 Monitoring 296
14.7 Summary 298
14.8 For Further Reading 298
Chapter 15: The Future of DevOps 299
15.1 Introduction 299
15.2 Organizational Issues 300
15.3 Process Issues 302
15.4 Technology Issues 305
15.5 What About Error Reporting and Repair? 309
15.6 Final Words 310
15.7 For Further Reading 310
References 311
About the Authors 315
Index 317
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