May 2018
Intermediate to advanced
256 pages
7h 6m
English
Content preview from OpenStack for Architects - Second Edition
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Assigning roles
Once we've declared our roles in the composition layer, we need a mechanism via which we apply them to systems. The tool that we've been using up to this point (Packstack) does this over SSH—it generates a set of Puppet manifests that include the community modules and then it applies them to the systems in our lab one by one. It supports two roles: the controller role and the compute role. Our lab deployment currently has controller and compute nodes, but we'll also be defining database nodes that can run the database and messaging services.
Many of the organizations that we've worked with have used Cobbler (http://cobbler.github.io), Foreman (http://theforeman.org), Puppet Enterprise (https://puppetlabs.com/puppet/puppet-enterprise ...
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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.