Book Image

Troubleshooting OpenStack

By : Tony Campbell
Book Image

Troubleshooting OpenStack

By: Tony Campbell

Overview of this book

OpenStack is a collection of software projects that work together to provide a cloud fabric. OpenStack is one of the fastest growing open source projects in history that unlocks cloud computing for everyone. With OpenStack, you are able to create public or private clouds on your own hardware. The flexibility and control afforded by OpenStack puts the cloud within reach of anyone willing to learn this technology. Starting with an introduction to OpenStack troubleshooting tools, we’ll walk through each OpenStack service and how you can quickly diagnose, troubleshoot, and correct problems in your OpenStack. Understanding the various projects and how they interact is essential for anyone attempting to troubleshoot an OpenStack cloud. We will start by explaining each of the major components and the dependencies between them, and move on to show you how to identify and utilize an effective set of OpenStack troubleshooting tools and fix common Keystone problems. Next, we will expose you to common errors and problems you may encounter when using the OpenStack Block Storage service (Cinder). We will then examine Heat, the OpenStack Orchestration Service, where you will learn how to trace errors, determine their root cause, and effectively correct the issue. Finally, you will get to know the best practices to architect your OpenStack cloud in order to achieve optimal performance, availability, and reliability.
Table of Contents (17 chapters)
Troubleshooting OpenStack
About the Author
About the Reviewer

Chapter 8. Troubleshooting the OpenStack the Orchestration Service

Heat is the code name for the OpenStack orchestration service. Much like a conductor works with a collection of musicians and leads them to make beautiful music together, so does Heat work with a collection of OpenStack services in an effort to make cloud building easier. Heat provides a means by which users can coordinate services such as Nova, Neutron, Glance, Keystone, and others. Heat makes it easy to plug the OpenStack services together into Stack. When it comes to troubleshooting Heat, there are two stages you will need to be concerned with. The first is Heat itself and the second is all the OpenStack services Heat leverages to do its job. In this chapter, we will look at the following topics:

  • Troubleshooting Heat services

  • Fixing Heat authentication issues

  • Correcting common Heat template errors