Groesbeek, view of the 'National Liberation Museum 1944-1945' in Groesbeek. © Ton Kersten
Fork me on GitHub
Archive for April 2014

Docker panics

2014-04-14 (140) by Ton Kersten, tagged as sysadm

This morning I was messing around with Docker and I wanted to build me a nice, clean container with Ubuntu in it, to test Ansible thingies. I’ve done that before and everything worked as a charm. Until today.

I have this Dockerfile (I’ve stripped it to the bare bones that still fail):

FROM ubuntu:latest
RUN echo "deb precise main universe" > /etc/apt/sources.list
RUN apt-get -y update
RUN apt-get -y upgrade
RUN apt-get -y install git git-flow
RUN apt-add-repository -y ppa:mozillateam/firefox-next
RUN apt-get install -y firefox

and when I run

docker build .

I end up with a beautiful kernel panic. Whatever I try, panic Nothing in any logfile

I’m running kernel version Linux lynx 3.2.0-60-generic #91-Ubuntu SMP Wed Feb 19 03:54:44 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux which had no problems before.

The Docker version is Docker version 0.10.0, build dc9c28f

Is there anybody out there that knows what’s happening?


Ansible @ Loadays

2014-04-05 (139) by Ton Kersten, tagged as ansible, sysadm

Last Saturday I attended Loadays in Antwerp, Belgium.

After listening to Jan Piet Mens’s talk about Ansible, I was up for it.

At 11:30 sharp, I started my own presentation for an almost packed room. It’s called “Ansible, why and how I use it” and you can find it on SpeackerDeck.

It was a lovely talk, with a very knowledgeable crowd.

Please, have a look at it and if you have any questions, let me know.

Thanks to the crew for organizing such a lovely event, every year.

Photos of the event where taken by Robert Keerse and you can see them at his Google Plus page. Do enjoy!!

For those of you with a strong stomach, the complete presentation is on Youtube as well. Have a look at the Youtube stream