Book Image

OpenStack Essentials - Second Edition

By : Dan Radez
Book Image

OpenStack Essentials - Second Edition

By: Dan Radez

Overview of this book

OpenStack is a widely popular platform for cloud computing. Applications that are built for this platform are resilient to failure and convenient to scale. This book, an update to our extremely popular OpenStack Essentials (published in May 2015) will help you master not only the essential bits, but will also examine the new features of the latest OpenStack release - Mitaka; showcasing how to put them to work straight away. This book begins with the installation and demonstration of the architecture. This book will tech you the core 8 topics of OpenStack. They are Keystone for Identity Management, Glance for Image management, Neutron for network management, Nova for instance management, Cinder for Block storage, Swift for Object storage, Ceilometer for Telemetry and Heat for Orchestration. Further more you will learn about launching and configuring Docker containers and also about scaling them horizontally. You will also learn about monitoring and Troubleshooting OpenStack.
Table of Contents (20 chapters)
OpenStack Essentials Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Definitions of Ceilometer's configuration terms


As resources are being managed within the OpenStack cluster, there are certain types of things that are being measured by Ceilometer. These types of things are called meters in Ceilometer. Each of these types of measurements gathers samples. Samples are single measurements or data points of a certain meter. The definition of how often to sample a meter is called a pipeline. Once enough samples are collected, they can be aggregated into statistics. Ceilometer statistics show a collection of samples over time for a particular meter. Ceilometer also has the ability to set alarms that will monitor statistics and is able to respond to matching criteria.

Pipelines

Pipelines are something that you shouldn't have to spend time configuring. Ceilometer has a collection of predefined pipelines that should suit most of your needs. If you end up needing a custom pipeline, it would be done in the /etc/ceilometer/pipeline.yaml configuration file. Take a look...