Aug 052014

I was very fortunate to win a 3D printer, Makerbot Mini, at a developer conference. I think 3D printing technology is amazing, but never had a really good excuse to purchase one. Now, I don’t need excuses! Here are my first impressions: If you have a 3D printer at your desk at work, people will [...]

 Posted by at 9:13 am
Jul 182014

We are very excited to be doing a workshop at OSCON this year! “Curious about OpenStack, but don’t know where to start? In this hands on tutorial we will walk you through the basics of OpenStack, the OpenSource cloud computing platform that is used to build private and public clouds.” Since this is a [...]

 Posted by at 1:54 pm
Mar 192014

Last week I was troubleshooting neutron issues, and one of my colleagues showed me a new cool tool to help debug some issues. Here is the link to the tool and its current documentation: Basic usage: Get a neutron network UUID: neutron net-list Add a probe to on the network: neutron-debug –config-file <config file for [...]

 Posted by at 1:09 pm
Feb 032014

OpenStack services have very powerful command line interfaces, with lots of different options.  I went looking for a good command line cheat sheet, and did not find many options, so decided to created one myself. This is not a replacement for reading excellent OpenStack documentation, rather, a short summary of some basic commands. Comments, corrections, [...]

Jan 202014

If you want to play with the new razor-server version but don’t feel like installing all the bits by hand, try out a little vagrant script I wrote at So far, it has been tested with the WMware Fusion, and is somewhat of a work in progress. Keep in mind, that it takes a [...]

 Posted by at 11:28 pm
Jan 202014

Since razor has been re-written to razor-server, I had to re-write Chef broker as well. I modeled (copied) the new Chef broker after the original one as much as I could. There were, however, some natural differences and some new challenges. The biggest issue was that since the broker configuration JSON is stored as one [...]

 Posted by at 10:46 pm
Jan 202014

If you have not been following google groups and other discussions, this is a summary of the main differences between the original razor and razor-server. The new razor-server is a somewhat different beast than the original razor. If you go to the original git repo,, you will find a note stating “TL;DR: Razor is [...]

 Posted by at 9:44 pm
Aug 232013

If you are trying to use razor to install CentOS and are running issues with the chef broker hand off, it is likely that this failure is cause the clock difference between your chef client and chef server. To verify, after install of OS is complete, log into your new node and run chef-client. [root@centos9 [...]

 Posted by at 2:50 pm