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had to do this today

Posted 08-17-2013 at 05:08 AM by nglbrkr (Notes)

when you lose the root password, don't panic

http://xmodulo.com/2013/02/how-to-re...an-ubuntu.html

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Raspberry Pi Server Cluster Performance

Posted 08-15-2013 at 04:36 PM by Pyplate

I've done some testing on my cluster. 4 Pies is definitely better than one, there's a big difference in performance between a single Pi and a 4 node cluster. You can read more detail here: server cluster testing.

As you'd expect, a cluster of four Raspberry Pies isn't that powerful, but setting it up has been interesting. It can handle a surprising amount of traffic - I got 2800 visits from Reddit yesterday. The minimum page load time is over a second (as tested on my local network),...

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Epoptes – Open source computer lab management and monitoring tool

Posted 08-15-2013 at 07:01 AM by sridhar11

Epoptes is an open source computer lab management and monitoring tool. It allows for screen broadcasting and monitoring,remote command execution, message sending, imposing restrictions like screen locking or sound muting the clients and much more!

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Load balanced cluster with Raspberry Pies

Posted 08-13-2013 at 03:19 PM by Pyplate

I finally got around to doing it. I've set up a 4 node Raspberry Pi cluster. It's not that powerful, but setting it up has been good practice.

I used an old PC running Lubuntu as a load balancer. I just installed Apache and I'm using Apache's balancer module. I installed Lubuntu because I'm using a very old PC that has 512MB of RAM. The PC is more powerful than the cluster, but if I just used the PC as a server, I wouldn't have learned anything about load balancing.
...

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WiringPi-Perl example

Posted 08-12-2013 at 09:11 PM by drask
Updated 08-16-2013 at 01:11 PM by drask

Tags perl, raspberry pi, wiringpi

This is a Raspberry Pi project I did a few months ago and meant to post somewhere. There is a Perl interface to the WiringPi module. It's available from https://github.com/WiringPi/WiringPi-Perl. Unfortunately it doesn't come with any examples, but the WiringPi module comes with some nice examples. Unfortunately they are all written in C and it can take some trial and error to translate and I never found any translations of the examples online, or any WiringPi-Perl specific examples.
...

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