Archive for tag ‘Raspberry Pi‘

 
 

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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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!

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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First post!

29. November 2012 • Category: Uncategorized • Comment: 0

So my Raspberry Pi is almost ready to be sent off to EDIS in Graz, Austria.  It’s configured for its final network and it’s seeing me as logging in from New York, though it’s still dangling from its UTP cable in my (increasingly misnamed) Entropy Room.   I’ll make a few minor adjustments before sending it off (security, timezone and ntp services amongst others), but  it should be details only.   Once it’s installed in Graz, I’ll try to keep my paws off it, as, missing Lights-Out Management or serial console, I’ll have limited control of it.

I’ll post a couple of articles here on what I’ve done to cope with my missing LOM, fragile disk and limited memory, and to test things out.

Even if my Austrian RasPi will never be terribly useful (and I still think that it will), the process will be an interesting experience full of issues I’d never encounter in my day-job or wrt my “proper” server in the aforementioned Entropy Room.

So, as they say, “Stay tuned.”