RDO Bug Triage

Mon 13 January 2014 by Lars Kellogg-Stedman Tags openstack redhat

This Wednesday, January 15, at 14:00 UTC (that's 9AM US/Eastern, or date -d "14:00 UTC" in your local timezone) I will be helping out with the RDO bug triage day. We'll be trying to validate all the untriaged bugs opened against RDO.

Feel free to drop by …

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Visualizing Neutron Networking with GraphViz

Mon 23 December 2013 by Lars Kellogg-Stedman Tags openstack neutron networking

I've put together a few tools to help gather information about your Neutron and network configuration and visualize it in different ways. All of these tools are available as part of my neutron-diag repository on GitHub.

In this post I'm going to look at a tool that will help you …

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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 …

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A Python interface to signalfd() using FFI

Thu 28 November 2013 by Lars Kellogg-Stedman Tags python

I just recently learned about the signalfd(2) system call, which was introduced to the Linux kernel back in 2007:

signalfd() creates a file descriptor that can be used to accept signals targeted at the caller. This provides an alternative to the use of a signal handler or sigwaitinfo(2 …

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Long polling with Javascript and Python

In this post I'm going to step through an example web chat system implemented in Python (with Bottle and gevent) that uses long polling to implement a simple publish/subscribe mechanism for efficiently updating connected clients.

My pubsub_example repository on GitHub has a complete project that implements the ideas discussed …

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