Caching docker image on CircleCI

At BKNO3 we use Docker and docker-compose for development, in order to make sure every developer can easily and reliably set up a development environment locally, even if they're not familiar with the project itself (we have several components, with different developers working on each one).

The same docker ...

Shooting timelapse videos on Linux

I've been doing some experiments with shooting timelapse videos, and I'd like to share information that could be useful for others (or future me looking for it again..).

Far from being a guide, I'm just pasting here the commands I used.

Just as a reference, I'm ...

PostGIS on Gitlab-CI

It took me a while to figure out how to setup postgis on a gitlab-ci build, and could not find anything on the docs, so here is a brief explanation of what I did:

First of all, I used mdillon/postgis as a base image for the service, to avoid ...

Python3 development with Emacs

I am currently working on a mix of Python2/Python3 projects, and as such, I need to find a way to customize a few things on a per-project basis. This post contains notes I'm going to take along the path.

Per-directory variables

Using .dir-locals.el, you can customize things ...

Make Skype use desktop theme on 64bit Linux

To make Skype use the same theme as other desktop applications (in my case, the same theme I'm using for Gtk apps), you'll need to install the 32bit version of the gtk theme engine you're using.

On debian jessie, I simply did:

apt-get install gtk2-engines:i386

Also ...

Deploying an Elasticsearch cluster via SaltStack

Here is a short guide covering the steps I followed in order to deploy an ElasticSearch cluster using SaltStack to manage configuration.


For the purposes of testing, I will be using a bunch of locally-installed virtualmachines. Specifically, we'll have:

  • A machine running salt master
  • Three elasticsearch nodes

Creating ...

Hanging out the laundry - the engineer way

The problem

I live in a small apartment with just a shared garden, and I usually hang out the laundry inside on a drying rack which tends to be way too small, especially for things like bed sheets.

The solution

The only option to lay out a proper clothesline was ...

Prevent Spotify from "freezing" on Linux with Awesome wm

I recently upgraded Spotify on Linux to version 0.9.10.

A part from the nice improvements (it's cool to have a browse tab, at last), there are also some issues.

Specifically, it looks like the song change notification doesn't work well with Awesome WM, causing most parts ...

Using nvidia driver on debian jessie

I had some troubles getting nvidia proprietary drivers up & running on Debian Jessie (kernel 3.13-1-amd64).

I'm sharing the solution I found here, as it might be useful to somebody else.

Machine configuration

Machine: Thinkpad W530
Graphics card: NVIDIA Corporation GK107GLM [Quadro K2000M] (rev a1)
Operating System: Debian Jessie ...

Importing Apache logs in ElasticSearch

I needed some way to visualize and analyze logs from webservers.

So, I decided to use the "elasticsearch stack" for that:

Setting up ElasticSearch

Just download, untar and launch:

tar xzvf elasticsearch-1.1.1.tar ...

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