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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
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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

Launching a Docker instance

Now that a there is a compute node that is configured to use the docker driver and there is a Glance image available to launch from, you are ready to boot a Docker container with OpenStack. The docker integration that you have completed enables a Docker instance to be launched the same way that a virtual machine instance is launched:

undercloud# openstack server create --flavor 1 --image centos --key-name openstack --nic net-id={internal net-id} "My First Docker Instance"

The container will be spawned on the compute node that supports Docker and will become active. Once it is active, there is the question of what to do with it? Generally, a container is launched with intent to run a specific process. As an example, we can tell the Docker image to run the SSH daemon on boot as its process. Doing this, it can be connected to over SSH similar to a virtual machine:

undercloud# glance image-update --property os_command_line='/usr/sbin/sshd -D' centos...

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