• … or why you should care about “OOMScoreAdjust” in your systemd-enabled docker-images Recently I put together a docker image with “PostgreSQL 9.4” installed from the project’s software repository on “CentOS 7.1” to back a rails application. Unfortunately I was not abled to run the “PostgreSQL”-server in a container based on that image. It failed with exit code 206/OOM_ADJUST. In this article I’m going to describe the reason for the failure using a minimal failing example.

  • If you need to share files from your local system with others, you’ve got plenty of options. For some of them you need a client installed locally and an account at a remote website. Fortunately there are easier options available as most programming languages come with an HTTP server. In most cases it’s able to serve files from a local directory and is sufficient for a lot use cases. In this article I am going to show you, how I solved the problem by “writing” a local web server in Go running on Linux, Windows and Mac OS X.

  • Having a suite testing a lot of features is a good thing. But if your project supports a lot of different Rubies – MRI-Ruby, JRuby etc. – you might face platform dependent bugs. Read on, if you like to know how we worked around some platform dependent bugs in aruba to keep the build status “green” on all support Rubies.