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


OpenStack is one of the fastest growing open source projects in the history. Its rapid adoption and popularity has led to an increase in the demand of OpenStack talent. The skills you will learn in this book will help you position yourself as an effective OpenStack troubleshooter.

What this book covers

Chapter 1, The Troubleshooting Toolkit, covers various tools that will provide invaluable as you troubleshoot OpenStack.

Chapter 2, Troubleshooting OpenStack Identity, helps you to quickly recognize and resolve identity and authentication issues.

Chapter 3, Troubleshooting the OpenStack Image Service, fixes problems with Glance, the OpenStack Image service.

Chapter 4, Troubleshooting OpenStack Networking, shows you how to resolve networking problems within your OpenStack cluster.

Chapter 5, Troubleshooting OpenStack Compute, adverts that the compute service is central to OpenStack, and this chapter includes helpful tips for quickly getting things resolved in case the service breaks.

Chapter 6, Troubleshooting OpenStack Block Storage, explores ways to resolve issues with persistent storage in an OpenStack cluster.

Chapter 7, Troubleshooting OpenStack Object Storage, introduces you to object storage in OpenStack and helps you master the techniques to resolve common issues.

Chapter 8, Troubleshooting the OpenStack Orchestration Service, discusses Heat, the OpenStack Orchestration service, and how to navigate through errors or problems with this service.

Chapter 9, Troubleshooting the OpenStack Telemetry Service, explores Ceilometer and how to troubleshoot issues with the telemetry processes and meters.

Chapter 10, OpenStack Performance, Availability, and Reliability, provides you with tips for maintaining the overall health of your OpenStack cluster.

What you need for this book

This book is based upon the Liberty release of OpenStack running on the Ubuntu operating system. While most of the content will be relevant to other versions of OpenStack, and alternate operating systems, the examples are based on the author's configuration.

Who this book is for

You will need a basic understanding of OpenStack, Linux, and cloud computing. If you have an understanding of Linux, this book will help you leverage that knowledge in the world of OpenStack, giving you confidence to tackle most issues that may arise.


In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "Typing ceilometer help in the terminal will give you a list of the available commands."

A block of code is set as follows:

instance_usage_audit = True 
instance_usage_audit_period = hour 
notify_on_state_change = vm_and_task_state 
notification_driver = messagingv2

Any command-line input or output is written as follows:

sudo -u ceilometer ceilometer-api --config-file=/etc/ceilometer/ceilometer.conf --log-file=/var/log/ceilometer/ceilometer-api.log


Warnings or important notes appear in a box like this.


Tips and tricks appear like this.

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