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


As we have seen throughout this book, many OpenStack services make heavy use of databases. Production deployments typically use MySQL or Postgres as a backend database server. As you have learned, a failing or misconfigured database will quickly lead to trouble in your OpenStack cluster. Database problems can also present more subtle concerns that may grow into huge problems if neglected.


The database server can become a single point of failure if your database server is not deployed in a highly available configuration. OpenStack does not require a high-availability installation of your database, and as a result, many installations may skip this step. However, production deployments of OpenStack should take care to ensure that their database can survive the failure of a single database server.

MySQL with Galera Cluster

For installations that use the MySQL database engine, there are several options that can be used to cluster your installation. One popular method is to...