Zyxel vs. Vodafone Easybox with VDSL 50
I ran in some trouble with my Vodafone Easybox 904 xDSL. Even with 2Ghz and 5Ghz WLAN I had regularly drops. Had to turn on / off the WLAN on the device or had to reboot it to reconnect. Otherwise the VDSL line reguarly got disconnected, also replacing the Easybox from Vodafone didn’t helped, so I bought a Zyxel VMG1312-B30A. Search through the interwebs and took me a while to figure out what settings are required. Continue readingDocker and parallel builds
I was listening to an interesting talk from Laura Frank from Codeship. In case you build or maintain a Continuous {Integration, Delivery} environment this definitely worth watching and they describe how they used LXC and now Docker to build their CI/CD infrastructure.
TL;DR
Interesting to me, the description in the YAML file reminded me quickly on a course I needed to pass during my study in parallel computing.
The exam had one section where you had to describe parallel and sequential processes with some high level constructs.
You had to describe a given time sequence graph for processes on n processors with the primitives BEGIN/END for sequential parts and COBEGIN/COEND for parallel processes.
IPv6 and Monitoring
We are all happy when we are able to get IPv6 connectivity for our new servers. In case the network is provided by someone else and some kernel settings you can get in some tricky situations. With IPv6 there are so many addresses your Laptop and Mobile can have a unique public IPv6 address forever - pretty cool huh? The downside is, it would be pretty easy to trace every connection you ever do back to your device - this really not what you want! Continue readingPimp my Mail Notifications
Notifications are important if you do monitoring. I never liked mail notifications from monitoring systems where all the information is hidden in non-sense text. Otherwise notifications never look the same, so I’m always forced to read all that useless crap again and again. This is an approach to improve the usability of monitoring notifications using more a table pattern which helps me to recognize useful information much quicker. Probably a lot of E-Mail guys will hate me for the reason I’m using HTML in mails. Continue reading
Material Workshop OpenNMS im Büro 2.0
Am 30.03.2015 haben wir im Büro 2.0 in Berlin einen Workshop mit OpenNMS durchgeführt. Die Zielgruppe waren NeueinsteigerInnen und alle die Interesse an Monitoring mit freier Software haben. Es wurden Installationszenarien, das Provisioning und beispielhaft diverse Monitore für Anwendungen und Dienste eingerichtet.
Die Slides sind unter einer freien CC-BY 3.0 lizenziert und stehen auf GitHub zur Verfügung.
Kickstart Workshop OpenNMS im Büro 2.0
Für diejenigen, die kurzentschlossen sind – hier eine letzte Erinnerung für einen kostenfreien Kickstart workshop zu OpenNMS. Die Registrierung und Anfahrt findet ihr unter: