Pygrunn: simple cloud with TripleO quickstart - K Rain LeanderΒΆ

Tags: python, pygrunn

(One of my summaries of the one-day 2016 PyGrunn conference).

What is openstack? A “cloud operating system”. Openstack is an umbrella with a huge number of actual open source projects under it. The goal is a public and/or private cloud.

Just like you use “the internet” without concerning yourself with the actual hardware everything runs on, just in the same way you should be able to use a private/public cloud on any regular hardware.

What is RDO? Exactly the same as openstack, but using RPM packages. Really, it is exactly the same. So a way to get openstack running on a Red Hat enterprise basis.

There are lots of ways to get started. For RDO there are three oft-used ones:

  • TryStack for trying out a free instance. Not intended for production.

  • PackStack. Install openstack-packstack with “yum”. Then you run it on your own hardware.

  • TripleO ( It is basically “openstack on openstack”. You install an “undercloud” that you use to deploy/update/monitor/manage several “overclouds”. An overcloud is then the production openstack cloud.

    TripleO has a separate user interface that’s different from openstack’s own one. This is mostly done to prevent confusion.

    It is kind of heavy, though. The latest openstack release (mitaka) is resource-hungry and needs ideally 32GB memory. That’s just for the undercloud. If you strip it, you could get the requirement down to 16GB.

To help with setting up there’s now a TripleO quickstart shell script.

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My name is Reinout van Rees and I work a lot with Python (programming language) and Django (website framework). I live in The Netherlands and I'm happily married to Annie van Rees-Kooiman.

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