An introduction to OpenStack Heat

Fri 06 December 2013 by Lars Kellogg-Stedman Tags openstack heat neutron

Heat is a template-based orchestration mechanism for use with OpenStack. With Heat, you can deploy collections of resources -- networks, servers, storage, and more -- all from a single, parameterized template.

In this article I will introduce Heat templates and the heat command line client.

Writing templates

Because Heat began life as …

read more

A unified CLI for OpenStack

Fri 22 November 2013 by Lars Kellogg-Stedman Tags openstack

The python-openstackclient project, by Dean Troyer and others, is a new command line tool to replace the existing command line clients (including commands such as nova, keystone, cinder, etc).

This tool solves two problems I've encountered in the past:

  • Command line options between different command line clients are sometimes inconsistent …

read more

json-tools: cli for generating and filtering json

Sun 17 November 2013 by Lars Kellogg-Stedman Tags json openstack

Interacting with JSON-based APIs from the command line can be difficult, and OpenStack is filled with REST APIs that consume or produce JSON. I've just put pair of tools for generating and filtering JSON on the command line, called collectively json-tools.

Both make use of the Python dpath module to …

read more

Quantum in Too Much Detail

Thu 14 November 2013 by Lars Kellogg-Stedman Tags openstack quantum networking

I originally posted this article on the RDO website.

The players

This document describes the architecture that results from a particular OpenStack configuration, specifically:

  • Quantum networking using GRE tunnels;
  • A dedicated network controller;
  • A single instance running on a compute host

Much of the document will be relevant to other …

read more

A random collection of OpenStack Tools

Tue 12 November 2013 by Lars Kellogg-Stedman Tags openstack

I've been working with OpenStack a lot recently, and I've ended up with a small collection of utilities that make my life easier. On the odd chance that they'll make your life easier, too, I thought I'd hilight them here.


Crux is a tool for provisioning tenants, users, and …

read more