Archive for category ‘Technology‘

 
 

It Lives Again …

25. April 2015 • Category: Technology • Comment: 0

For reasons I’m not ready to disclose and, I fear, could prevent me from ever working in this industry again, this site was off the air for an extended time. Well, obviously, it’s back now


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Standing Desk

05. October 2014 • Category: Technology • Comment: 0

Reading this article on standing desks, I thought a few comments were warranted.


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Graz AWOL.

31. August 2013 • Category: Technology • Comment: 0

It had to happen. My Austrian RasPi went down 22nd of August and hasn’t come back yet. Without LOM (or a service contract with the hosting site), I’m a little out of luck here. When I set it up, I thought I wouldn’t care, but, turns out, I do a bit. So I’ve migrated the blog to my alternative RasPi for now (graz was obviously running nightly back-ups) and will move the rest over the coming week or so. Lesson learned: If you’ve spent more than a couple of hours on it, chances are it deserves redundancy. After so many years with fault tolerance being a non-negotiable feature at work, I kick myself for not realising that it also is when you’re just playing around. In all fairness, this is the first server I have away from my home, but still. Bad Henrik, no cookie!

Public smartphone chargers

18. June 2013 • Category: Society, Technology • Comment: 0

In this era of government mass surveillance and identity theft, I’m hoping people think twice before plugging their smartphone into a public charger, be it AT&Ts Street Charge network, a public charger in the airport or a treadmill in your local gym. Most of the pins of the (old) iPhones 30 pin dock connector is meant to transfer data and you can’t tell from looking at it, if they will, when you plug your phone in. Whether by design of the “charging station” or because somebody hacked it is really not important.

Same goes for the lightning connector and the various incarnations of USB-based connectors used on Android devices.

It’s certainly unlikely, but not impossible and if you’re anything like me, you’re carrying a huge amount of personal data that you’d probably prefer to keep to yourself. Smartphones are powerful tools, but “big gun makes big hole in foot.” So keep that smartphone charged from home.

That is all.

Arrived!

27. January 2013 • Category: Technology • Comment: 0

It’s arrived! I sent it by USPS Int’l Registered and Insured on the 15th December 2012 and it came online sometime friday 25th january. It’s now part of the Austrian Raspberry Sanctuary. Yay! I’m quite excited.

Colo RasPi – SD Card setup

08. December 2012 • Category: Technology • Comment: 3

I shan’t regurgitate all the science behind flash storage, as it’s readily available at finer websites like these:

https://lwn.net/Articles/428584/
http://blogofterje.wordpress.com/2012/01/14/optimizing-fs-on-sd-card/
https://en.wikipedia.org/wiki/Flash_memory

However, the cliff notes would say something like this: SD cards are organised in chunks of storage (“erase blocks” or “allocation units,” let’s call them AU) that are erased and frequently written as a unit.

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Faux EDIS subnet for testing

01. December 2012 • Category: Technology • Comment: 0

(Given that EDIS has run out of RasPi racking space and I’m probably the last one to get my act together and ship mine, the following may not be so interesting anymore, but I’m posting it anyway in case somebody colocates a server without Lights-Out Management.   Though, you really shouldn’t do that.)

In order to configure and test my Graz-bound RasPi completely before shipping it off, I configured my TomatoUSB-running Linksys router to have a 151.236.4.0/24 network on one of its ports and NAT all traffic going there as if it was going out to my ISP.

I’ll describe what I did here for inspirational rather than instructional purposes.   A lot of this depends on which router software you use and whether your ISP gives you a DHCP address or a static one (like mine does), so expect to add a little research before starting to implement it.


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