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 9. Troubleshooting the OpenStack Telemetry Service

Ceilometer is the code name of the OpenStack telemetry service. Ceilometer is responsible for metering in an OpenStack cluster. This service captures data about events, notifications, and measurements throughout the cluster. This data can be used for multiple purposes, including billing, monitoring, and autoscaling. Ceilometer works in conjunction with other OpenStack services in order to provide its functionality. In this chapter, we will explore the following topics:

  • Troubleshooting Ceilometer processes

  • Resolving Ceilometer authentication issues

  • Troubleshooting issues between Ceilometer, the message broker, and the database

  • Fixing issues with Ceilometer meters for Glance and Nova