August 2016
Beginner to intermediate
182 pages
4h 26m
English
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Chapter 8. Telemetry
Ceilometer is the telemetry component in OpenStack. While all the other components in OpenStack are busy managing virtual resources, Ceilometer keeps a watchful eye over them and measures the usage of resources, what resources are being used, and how they are being used within the cluster. In this chapter, we are going take a look at what is being measured and how to query the telemetry data. Then, we will use gnuplot to plot some of the data on a graph.
Understanding the data store
Before we start exploring Ceilometer, it is important to know that, by default, Ceilometer uses MongoDB to store all of its telemetry data. This data store can grow very rapidly and can use excess space. It is in your interest to keep Mongo's data ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.