Unai Huete Beloki - The Art of Site Reliability Engineering (SRE) with Azure: Building and Deploying Applications That Endure

The Art of SiteReliability Engineering(SRE) with AzureBuilding and DeployingApplications That EndureUnai Huete BelokiForeword by Peter De TenderThe Art of Site Reliability Engineering (SRE) with Azure: Building and DeployingApplications That Endure Unai Huete Beloki San Sebastian, Spain ISBN-13 (pbk): 978-1-4842-8703-3 ISBN-13 (electronic): 978-1-4842-8704-0 https://doi.org/10.1007/978-1-4842-8704-0 Copyright 2022 by Unai Huete Beloki This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. Trademarked names, logos, and images may appear in this book. Rather than use a trademark symbol with every occurrence of a trademarked name, logo, or image we use the names, logos, and images only in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of the trademark. The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights. While the advice and information in this book are believed to be true and accurate at the date of publication, neither the authors nor the editors nor the publisher can accept any legal responsibility for any errors or omissions that may be made.

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Printed on acid-free paper Table of Contents About the Author vii About the Technical Reviewer ix Acknowledgments xi Foreword xiii Introduction xv Chapter 1: The Foundation of Site Reliability Engineering 1 The History of Site Reliability Engineering 1 Why SRE Is Not DevOps 20 3 Identify Best Practices Around SRE 6 Automate Everything 7 Identify Acceptable Service Levels 7 Be Focused on Engineering 8 Understand the Challenges of SRE 9 Clarify Prerequisites to the Role of SRE 12 Summary 15 Chapter 2: Service-Level Management Definitions and Acronyms 17 Why Its Not a Glossary 18 Risk Assessment 18 Understand Reliability 23 Service-Level Metrics 24 Unavailability Metrics 30 Postmortems 39 iii Table of ConTenTs Toil 40 Hierarchy of Reliability 41 Summary 43 Chapter 3: Azure Well-Architected Framework (WAF) 45 Understanding Well-Architected Framework (WAF) Concepts 46 WAF Reliability Building Block 49 Reliability Checklists 58 Testing Applications for Resiliency 59 Well-Architected Framework Assessment 62 Summary 68 Chapter 4: Architecting Resilient Solutions in Azure 69 What Is Resiliency? 69 Azure Platform Resiliency 71 Resiliency Based in Numbers 74 Resiliency on Application Design 76 Mainly Used Components/Platform Features for Resilient Solutions 78 Resilient Architecture Examples 82 PaaS Resilient Architecture 84 Microservices Architecture 86 Testing Resiliency on Azure 89 Summary 89 Chapter 5: Automation to Enable SRE with GitHub Actions/Azure DevOps/Azure Automation 91 Automation for SRE 92 CI/CD Automation with DevOps 93 What Is DevOps 93 Modern Deployment Strategies 122 Summary 142 iv Table of ConTenTs Chapter 6: Monitoring As the Key to Knowledge 143 Operational Awareness 144 SLI/SLO/SLA 145 Error Budget/Burn Rate 147 Observability vs Monitoring 148 Azure Service Health 148 Azure Monitor 150 Data Sources 151 Visualize 153 Analyze 160 Application Insights 167 Azure Monitor Alerts 178 [DEMO] Tracking SLI/SLO/SLA Using Application Insights and Log Analytics 182 Azure DevOps 187 GitHub 189 Summary 192 Chapter 7: Efficiently Handle Incident Response and Blameless Postmortems 193 Incident Response (IR) 193 Incident Response Pillars 196 Incident Tracking/Detection 199 Communication and ChatOps 202 Eradication/Remediation 204 Measuring Performance 211 [DEMO] Incident Response 214 Blameless Postmortems 218 Best Practices/Tips 221 Summary 222 v Table of ConTenTs Chapter 8: Azure Chaos Studio (Preview) and Azure Load Testing (Preview) 223 Intro to Chaos Engineering 224 Chaos Monkey 225 Principles of Chaos (Engineering) 226 Azure Chaos Studio 228 Load/Performance Testing 261 Azure Load Testing 262 Summary 271 Index 273 vi About the AuthorUnai HueteBeloki is a Microsoft Technical Trainer (MTT) working at Microsoft, based in San Sebastian (Spain). From February 2017 to July 2020, he worked as a PFE (Premier Field Engineer), offering support and education as a DevOps expert to Microsoft customers all around EMEA, mainly focused on the following technologies: GitHub, Azure DevOps, Azure Cloud Architecture and Monitoring, and Azure AI/Cognitive Services. Since July 2020, he has worked as a Microsoft Technical Trainer (MTT) on the technologies mentioned above and served as the MTT lead for the AZ-400 DevOps Solutions exam, helping shape the content of the exam/course. In his free time, he loves traveling, water sports like surfing and spearfishing, and mountain-related activities such as MTB and snowboarding. vii About the Technical ReviewerPeter DeTender has more than 20 years experience in architecting and deploying Microsoft data center technologies, having started his career on Windows NT4 Server in 1996. Since early 2012, he started shifting to cloud technologies (Microsoft 365, Intune) and quickly moved to the Azure platform, working as a cloud solution architect and trainer, out of his own company.

Since September 2019, Peter has worked at Microsoft as part of the prestigious Microsoft Technical Trainer team, providing Azure readiness workshops to larger customers and partners across the globe. Peter recently relocated to Redmond, WA, to continue this role in the West US team. Prior to joining Microsoft, he was an Azure MVP for 5 years and a Microsoft Certified Trainer for more than 12 years. He is still actively involved in the community as a speaker, technical writer, and author. Follow Peter on Twitter at @pdtit and check his technical blog, www.007ffflearning.com. ix