Book Image

OpenStack Orchestration

By : Adnan Ahmed Siddiqui
Book Image

OpenStack Orchestration

By: Adnan Ahmed Siddiqui

Overview of this book

This book is focused on setting up and using one of the most important services in OpenStack orchestration, Heat. First, the book introduces you to the orchestration service for OpenStack to help you understand the uses of the templating mechanism, complex control groups of cloud resources, and huge-potential and multiple-use cases. We then move on to the topology and orchestration specification for cloud applications and standards, before introducing the most popular IaaS cloud framework, Heat. You will get to grips with the standards used in Heat, overview and roadmap, architecture and CLI, heat API, heat engine, CloudWatch API, scaling principles, JeOS and installation and configuration of Heat. We wrap up by giving you some insights into troubleshooting for OpenStack. With easy-to-follow, step-by-step instructions and supporting images, you will be able to manage OpenStack operations by implementing the orchestration services of Heat.
Table of Contents (14 chapters)
OpenStack Orchestration
About the Author
About the Reviewers
Stack Group of Connected Cloud Resources

Heat and DevStack

DevStack provides a set of scripts for automated installation of OpenStack on Ubuntu as well as Fedora Linux. It is a tool to help OpenStack developers to quickly set up an OpenStack environment using scripts. These scripts automatically download or clone the required packages and repositories from the OpenStack website that are necessary for setting up an OpenStack cloud.

One drawback with this approach is that the environment is not persistent across server reboots. There are scripts such as rejoin-stack that need to be run to recreate the environment after a server has been rebooted.

Therefore, DevStack is not recommended for a production install. However, it can only be used for testing and development purpose, where an OpenStack environment is created and destroyed several times. When OpenStack is required in a purely development environment, other methods of installation can be used.

DevStack can also be configured for enabling and using Heat services. This can be done...