During a trip to Manhattan last winter (Jan 2016 or so) I heard some buskers in Union Square station making sounds that were at once familiar and new.
Continue readingReimagining the Saxophone
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Running SAS University Edition on Fedora 25
My Wife is a statistician. Over the course of her career, she’s done a lot of work coding in SAS, and, due to the expense of licensing, I’ve never been able to run that code myself. So, when I heard about SAS having a free version, I figured I would download it and have a look, maybe see if I could run something.
Like many companies, SAS went the route of shipping a virtual appliance. They chose to use Virtual Box as the virtualization platform. However, when I tried to install and run the VM in virtual box, I found that the mechanism used to build the Virtual Box specific module for the Linux Kernel, the build assumption were not met, and the VM would not run.
Instead of trying to fix that situation, I investigated the possibility of running the virtual appliance via libvirt on my Fedora systems already installed and configured kvm setup. Turns out it was pretty simple.
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Exploring long JSON files with jq
The JSON file format is used for marshalling data in lots of different applications. If you are new to an application, and don’t know the data, it might be hard to visually parse the JSON and understand what you are seeing. The jq command line utility can help make it easier to scope in to a section of the file. This is a starting point.
Continue readingA Ray in a Minecraft Mod
I want to shoot a ray. And not just parallel to one of the axis of the cartesion coordinate system. I want to look in a direction and shoot a ray in that direction. I want to be able to shoot aray in any direction and walk on it. Like certain ice based superheros. And now I can do that.
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Keystone Development Bootstrap with Service Catalog
My Last post showed how to get a working Keystone server. Or did it.
$ openstack service list The service catalog is empty.
Turns out, to do most things with Keystone, you need a service catalog, and I didn’t have one defined. To fix it, rerun bootstrap with a few more options.
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Keystone development server on Fedora 25
While Unit tests are essential to development, I often want to check the complete flow of a feature against a running keystone server as well. I recently upgraded to Fedora 25, and had to reset my environment. Here is how I set up for development.
Update: turns out there is more.
JSON Home Tests and Keystone API changes
If you change the public signature of an API, or add a new API in Keystone, there is a good chance the Tests that confirm JSON home layout will break. And that test is fairly unfriendly: It compares a JSON doc with another JSON doc, and spews out the entirety of both JSON docs, without telling you which section breaks. Here is how I deal with it:
Understanding the Election in Terms of the game Go.
If you want to understand elections, to understand influence, learn the game of Go (wei qi in chinese).
This is not a justification, or even a detailed election analysis. Just analogy to help promote discussion.
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Showing Code
Jill Jubinski is a well known and respected community leader in OpenStack. When she says something, especially about recruiting, it is worth listening to her, and evaluating what she says. When she tweeted:
While I find the ‘show some code ur proud of’ stance, its like, what if someone doesnt want to code outside of work? That has to be ok too.
my response came off as a contradicting her. It was:
nothing to show would be suspect. If you hate to code, no paycheck would be high enough to make you do it well.
Which goes to show that terseness is a demanding constraint; I did not adequately state what I was trying to state in my attempt to limit it to a single tweet. And of course, that meant it became a discussion back and forth.
Let me try to be a little more nuanced and fair here. What Jill says is spot on: it should be 100% OK for a programmer, and a good one, to not have anything that they are capable of showing prior to an interview. I, myself, would have fallen into that category earlier in my career.
Keystone Domains are Projects
Yesterday, someone asked me about inherited role assignments in Keystone projects. Here is what we worked out.
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