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  • Book Overview & Buying OpenStack Essentials
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OpenStack Essentials

OpenStack Essentials

By : Dan Radez
2.7 (3)
Buy this Book
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OpenStack Essentials

OpenStack Essentials

2.7 (3)
By: Dan Radez
Buy this Book

Overview of this book

OpenStack is a widely popular platform for cloud computing. Applications that are built for this platform are resilient to failure and convenient to scale. This book, an update to our extremely popular OpenStack Essentials (published in May 2015) will help you master not only the essential bits, but will also examine the new features of the latest OpenStack release - Mitaka; showcasing how to put them to work straight away. This book begins with the installation and demonstration of the architecture. This book will tech you the core 8 topics of OpenStack. They are Keystone for Identity Management, Glance for Image management, Neutron for network management, Nova for instance management, Cinder for Block storage, Swift for Object storage, Ceilometer for Telemetry and Heat for Orchestration. Further more you will learn about launching and configuring Docker containers and also about scaling them horizontally. You will also learn about monitoring and Troubleshooting OpenStack.
Table of Contents (15 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
Free Chapter
1
1. RDO Installation
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1. RDO Installation
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OpenStack architecture
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Dashboard
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Keystone
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Glance
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Neutron
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Nova
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Cinder
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Swift
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Ceilometer
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Heat
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OpenStack installation
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Installing RDO using Packstack
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Installing RDO using Triple-O
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Connecting to your Overcloud
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Summary
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2. Identity Management
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2. Identity Management
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Services and endpoints
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Interacting with Keystone in the dashboard
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Endpoints in the dashboard
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Summary
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3. Image Management
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3. Image Management
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Glance as a registry of images
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Using the web interface
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Building an image
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Summary
4
4. Network Management
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4. Network Management
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Networking and Neutron
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Open vSwitch configuration
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Creating a network
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Web interface management
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External network access
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Web interface external network setup
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Summary
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5. Instance Management
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5. Instance Management
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Managing flavors
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Managing key pairs
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Launching an instance
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Managing floating IP addresses
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Managing security groups
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Communicating with the instance
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Launching an instance using the web interface
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Summary
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6. Block Storage
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6. Block Storage
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Use case
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Creating and using block storage
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Attaching the block storage to an instance
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Managing Cinder volumes in the web interface
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Backing storage
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Ceph setup
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Summary
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7. Object Storage
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7. Object Storage
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Use case
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Architecture of a Swift cluster
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Creating and using object storage
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Object file management in the web interface
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Using object storage on an instance
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Ring files
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Summary
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8. Telemetry
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8. Telemetry
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Understanding the data store
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Definitions of Ceilometer's configuration terms
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Graphing the data
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Summary
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9. Orchestration
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9. Orchestration
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About orchestration
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Writing templates
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The Heat Orchestration Template format
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Launching a stack
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Autoscaling instances with Heat
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LBaaS setup
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Web interface
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Summary
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10. Docker
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10. Docker
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Containers
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OpenStack integration
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Nova compute configuration
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Glance configuration
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Launching a Docker instance
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Summary
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11. Scaling Horizontally
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11. Scaling Horizontally
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Scaling compute nodes
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Installing more control nodes
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Load-balancing control services
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High availability
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Highly available database and message bus
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Summary
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12. Monitoring
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12. Monitoring
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Monitoring defined
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Installing Nagios
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Monitoring methods
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Non-OpenStack service checks
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Monitoring control services
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Monitoring network services
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Monitoring compute services
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Summary
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13. Troubleshooting
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13. Troubleshooting
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The OpenStack debug command-line option
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Tailing the server logs
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Troubleshooting Keystone and authentication
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Troubleshooting Glance image management
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Troubleshooting Neutron networking
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Troubleshooting Nova launching instances
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Troubleshooting post-boot metadata
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Troubleshooting console access
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Troubleshooting Cinder block storage
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Troubleshooting Swift object storage
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Troubleshooting Ceilometer Telemetry
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Troubleshooting Heat orchestration
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Getting more help
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Summary
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Index
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Index

Building an image

Now that we've looked at getting a disk image into Glance, let's investigate how a cloud image is built. A cloud image is just a sealed disk image with cloud-init included. A sealed disk image is a file that has an operating system installed in it and has had all the host-specific items removed from it. Cloud-init is a post-boot process that checks the metadata service of OpenStack and asks for post-boot commands that should be run on the launched instance. We'll see cloud-init's use cases in Chapter 5, Instance Management, and Chapter 9, Orchestration; for now, we'll just make sure it's included in the cloud image we build. To build the image, we'll use virt-install. There are quite a few other options. If you're familiar with a different disk-image-building tool, use that if you like. This is just one example of how to build one of these images. Go ahead and make sure virt-install is installed. The following command accomplishes...

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