AWS marketplace and no longer supported instance types

I’ve been trying and trying to launch a Neo4j instance on the marketplace without success. It always gave me the nice “success” message, but when I went to the EC2 console: nothing!

A nice green “success” message even though it doesn’t work.

I finally decided to do it the hard way: manually. First step: select an instance type. I immediately try to select the same low cost instance I had picked in the marketplace (m3.medium) and to my surprise that type wasn’t there.

Instance type selection as per the Neo4j marketplace page.

Adding 1 + 1, I went back to the market place and tried with an instance type that still exists: m4.large… success!

So I don’t know who is to blame here, but here are my 2 questions to the internet:

  1. Why do we get the success message even though it doesn’t work?
  2. Why are unsupported instance types offered in the market place?

Python logging to stackdriver

I recently deployed a python application in google app engine / container engine. When I went to check the logs, everything was logged at the “ERROR” level even though my application uses python logging properly. As far as I know there are 2 ways to fix that:

  1. Use the stackdriver client, which requires an additional dependency and somewhat binds your program to google app engine.
  2. Format the logs in a way that stackdriver can parse them, which is easily configurable.

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Lecture: The Art of Debugging

Déverminer (déboguer) est, je crois, un sujet sur lequel je n’avais jamais lu jusqu’à maintenant. Travaillant maintenant presque à temps plein sur le projet MLDB, en C++, gdb est un de mes outils de travail au quotidien. Comme la productivité d’un programmeur dépend largement de la maîtrise de ses outils, j’ai décidé d’y consacrer du temps.

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The Art of Debugging with GDB, DDD, and Eclipse Book Cover The Art of Debugging with GDB, DDD, and Eclipse
Norman S. Matloff, Peter Jay Salzman,
No Starch Press

Lecture: Machine Learning in Action

Après un peu plus de 3 années passées chez Datacratic, il était grand temps que je m’intéresse davantage à l’apprentissage machine. C’est le livre Machine Learning in Action que j’ai choisi pour me lancer.

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Machine Learning in Action Book Cover Machine Learning in Action
Peter Harrington
Manning Publications

Provides information on the concepts of machine theory, covering such topics as statistical data processing, data visualization, and forecasting.