January 2018
Intermediate to advanced
398 pages
7h 54m
English
book
OpenStack Cloud Computing Cookbook - Fourth Edition
by Kevin Jackson, Cody Bunch, Egle Sigler, James Denton
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Adding metadata to a host aggregate
The power of host aggregates comes from the ability to use them to logically group hosts based on their properties. This can be used, for example, to enable load balancing, enforce physical separation, or keep instances that are insecure from being scheduled into a secured environment. We will show this by matching the metadata of a host aggregate with that of an instance flavor.
Getting ready
To add metadata to a host aggregate, you will need the following information:
- The
openstackcommand-line client - The
openrcfile containing appropriate credentials - The name or ID of the aggregate
- The metadata property to add
In our example, these values will be the following:
- Host aggregate:
cookbook-ssd-hosts - Metadata:
ssd=true ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.