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

Swift authentication

One of the unique characteristics of Swift, when compared to other OpenStack projects is that Swift can be run completely standalone. While Swift can be used with other OpenStack projects, it does not have any direct dependencies on those projects. For example, Swift can be configured to use its own internal authentication system or it can be configured to use Keystone. It is important to understand this nuance when troubleshooting Swift Authentication problems. Typically, a Swift installation will be configured to use one of the three authentication methods: TempAuth, Swauth, or Keystone. To determine which authentication method Swift is using, look in the proxy-server.conf configuration file located at /etc/swift/proxy-server.conf. In this file, there is a stanza named [pipeline:main]. This stanza will contain a string representing the authentication method being used, either tempauth or swauth.

Troubleshooting TempAuth

TempAuth, as the name implies, is a temporary authorization...