Mar 17
This is mostly for reference, but may be of use to others. In order to mount an image (in order to be able to edit it), you can execute the following code:
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1 2 3 |
dev=`sudo kpartx -a -v $FILE |tail -1|awk '{print $3}'` sudo mount /dev/mapper/$dev /mnt |
This is useful for editing one or more files in an image without needing to copy it to a device or card.
Mar 17
EDIT: The metrics below are skewed. Not all JVM’s are created equal. For updated metrics on the Pi, please see JVM Choice Matters (a lot!). What better thing to do on Pi Day than to calculate Pi? I figured while I’m at it, I might as well do some performance testing of the Raspberry Pi …
Mar 13
AT LAST, SIR TERRY, WE MUST WALK TOGETHER Philosophy & Lessons Learned 7 timeless lessons of programming ‘graybeards’ | ITworld Monitoring IEEE Xplore Abstract – Tracking Transaction Footprints for Non-intrusive End-to-End Monitoring Blast from the Past Oooh Shiny! Magpies don’t know what’s just enough! » Ramblings Raspberry Pi Intertech’s Complete Raspberry Pi Class Materials – …
Mar 11
I really like that go can produce static executables which do not require any dynamic libraries; this is especially useful for sysadmin tools. Metrix is one such tool — it is a single executable which is able to gather a variety of metrics and send them to different aggregators (by default it is sent to …
Mar 10
I’ve pushed nimblestratus/rpi-swarm to the Docker Hub. It was pretty easy to port — basically stock Swarm, with Dockerfile changes needed for the Pi. Thanks to hypriot for the hypriot/rpi-golang container which I used as a base. One caveat…. only containers which are created for the Pi will be able to run on the Raspberry …
Mar 06
Karojisatsu — PSA & Must Read Stephen, in his presentation, described a Japanese term called Karoshi – literally as “death from overwork.” I have seen this hundreds of times in our industry and I also have come close enough to understand the brink of Karoshi myself. … In the 1980s there was such a concern …
Mar 06
I have been experimenting with Raspberry Pi computers with the intent of having a small cloud that I can take with me to talks. Plusses: I can have a good sized cluster in a small volume. Low power draw (6W or less per computer) With the release of the Pi 2, distribution based upon available …
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