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

Monitoring defined


There are two classifications of monitoring, performance monitoring and availability monitoring. Performance monitoring shows the performance of what is being monitored over time. Availability monitoring show the status of what is being monitored at a point in time. Often, the same things are monitored, but the purposes of the two types of monitoring are different. As an example, if a server's CPU utilization was being monitored, availability monitoring checks the CPU utilization, and if it breaches a certain threshold, the monitoring alerts an operator that the utilization is high or may have remained high over the most recent checks. Performance monitoring keeps track of the CPU utilization in the longer term and most likely creates a graph to show the trend of CPU utilization on a server across days or weeks or longer.

In this chapter, we will focus on availability monitoring to be able to determine the current health of an OpenStack cluster based on the current status...