CentOS7 on Raspberry Pi 2 Model B

So here is a little sightseeing I did last night… I was down in ARMv7 land, looking at a RPI2 (some call it Raspberry Pi 2 Model B). The ultimate goal is to run an OpenShift3 PaaS on a cluster of RPI2. Therefor I would like to install CentOS7 on 3 or 4 RPI2. The first step was pretty straight forward and simple: flash some CentOS image to a SD Card. J described that on the CentOS blog, no need for me to redo that work. Afterwards I disabled all repos but c7buildroot and c7pass1. ARMv7 support is not in the official mirrors, so all the repos that use the mirror script (like /etc/yum.repos.d/CentOS-Base.repo) will fail!

So, what do we have… a Linux rpi2-os-gw 3.18.14-v7+ #794 SMP PREEMPT Sun Jun 7 12:50:51 BST 2015 armv7l armv7l armv7l GNU/Linux with java-1.6.0-openjdk.armv7hl and

[root@rpi2-os-gw ~]# sestatus
SELinux status: disabled

Something else?

root@rpi2-os-gw ~]# yum search docker
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Warning: No matches found for: docker
No matches found
[root@rpi2-os-gw ~]# yum search kubernetes
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Warning: No matches found for: kubernetes
No matches found
[root@rpi2-os-gw ~]#

And… GO? No, no GO :(

Posted at 18° 27' on 2015-07-07 | Filed Under: ARMv7, CentOS, container, docker, kubernetes | read on

producing themed PDF using Asciinurse (and she will convert your Asciidoc)

In preparation of my current work assignment I have revisited Asciinurse and enabled here to produce PDF.

Asciinurse is my take to separate Asciidoctor and all it’s dependencies into a single docker container image. With Version 1.3.0 I have enabled her to produce themed PDF out of your asciidoc files, simply by running docker run --rm -t -i -v $PWD:/data -v /etc/localtime:/etc/localtime b4mad/asciinurse asciidoctor-pdf -a pdf-style=rh-ra -v myfile.asciidoc

Looking at the command line, -a pdf-style will do the magic trick for you, it selects the theme to be applied by asciidoctor-pdf.

Posted at 19° 00' on 2015-06-18 | Filed Under: docker, Fedora, general blogging | read on

preparing my Atomic App demo for Red Hat Summit

Beside the hands on lab I co-host with some colleagues – @collier_s @nhripps @erikonopen – I have prepared a short demo on #Atomicapp it gives a short context what we are solving and why, additionally there is one slide that explains what a #Nulecule is. 

From the presentation (and github):

  • Application description and context maintained within a single container through extensible metadata
  • Composable definition of complex applications through inheritance and composition of containers into a single, standards-based, portable description.
  • Simplified dependency management for the most complex applications through a directed graph to reflect relationships.
  • Container and orchestration engine agnostic, enabling the use of any container technology and/or orchestration technology

The second part of the demo is the famous #WordPress Atomic App referencing a pre-built #MySQL Atomic App. 
You will find it on the #RedHatSummit channel and/or the #projectatomic channel on YouTube later this month. 

Posted at 18° 25' on 2015-06-04 | Filed Under: general blogging | read on