INTRODUCTION xi PART I: OPENSTACK OVERVIEW CHAPTER 1: INTRODUCING OPENSTACK 3 What Is Cloud Computing? 3 Why Should I Care? 6 Understanding the Architecture 13 Summary 18 CHAPTER 2: UNDERSTANDING THE OPENSTACK ECOSYSTEM: CORE PROJECTS 19 Identity 20 Compute 24 Storage 28 Imaging 34 Dashboard 37 Networking 38 Bringing It All Together 45 Summary 48 CHAPTER 3: UNDERSTANDING THE OPENSTACK ECOSYSTEM: ADDITIONAL PROJECTS 49 OpenStack Heat 50 OpenStack Database as a Service: Trove 54 Designate: DNS as a Service 62 Magnum 67 Murano: Application as a Service 70 Ceilometer: Telemetry as a Service 75 Summary 76 PART II: DEVELOPING AND DEPLOYING APPLICATIONS WITH OPENSTACK CHAPTER 4: APPLICATION DEVELOPMENT 79 Converting a Legacy App to an OpenStack App 79 Building Apps from Scratch 83 OpenStack App Description and Deployment Strategies 87 Summary 92 CHAPTER 5: IMPROVING ON THE APPLICATION 93 Failure Scenarios 94 Hostname and IP Addressing 99 Scaling 103 Improving Our Application 111 Summary 119 CHAPTER 6: DEPLOYING THE APPLICATION 121 Bare Metal, Virtual Machines, and Containers 122 Orchestration and Configuration Management 127 Monitoring and Metering 136 Elasticity 137 Updating and Patching 147 Summary 149 Book Wrap Up 149 INDEX 151