Today I added two new cheat sheets: RHCE Cheat Sheet RHEV/RHCVA Especially the RHEV/RHCVA cheat sheet is not very comprehensive, but maybe it is still a little helpful when learning for the RHCVA exam. Enjoy!

Am 2. November 2012 erscheint in Deutschland offiziell die aktuelle Ausgabe des Linux Magazins. Darin enthalten ist u.a. mein Artikel über Cfengine 3.4.0 und die Neuerungen in der Community Edition, der vor allem das neue Posix-ACL-Feature näher beleuchtet.   Ich bedanke mich herzlichst beim Linux Magazin für die erneute Gelegenheit, einen Artikel in dieser Zeitschrift [...]

Today I added three more cheat sheets: LPIC-1 Module 101 LPIC-2 Module 102 RHCSA All of them are partly in German and were copied from my private Wiki. I hope you find them useful and please let me know if you have any feedback for me.

Many Linux sysadmins have in common that working with configuration and other text files is part of their daily work. In my case, I often migrate older Linux boxes to our own Ubuntu fork. Therefore it is required to also use old configurations where it makes sense. When configuring and testing the applications on the [...]

Ever needed to find out what hardware runs a specific server without knowing anything about this system? Well, this happens to me from time to time. But since we are Linux sysadmins we know that there are possibilities to find out what we are dealing with. Let’s assume you are currently in such a situation [...]

Today I am starting a new series of blog posts: “Tools for Linux sysadmins” The first blog post will cover ethtool, one of the most useful tools to handle network cards since it gives you full control about the cards’ settings and other stuff. I mainly use it for two things: Reading out the firmware [...]