If you're using Elasticsearch you'll sooner or later have to deal with diskspace issues. The setup I currently have to manage gathers 200 to 300 million docs per 24 hours and a solution was needed to always guarantee enough free diskspace so that Elasticsearch wouldn't fail.
It's truly awesome to see how the PiGI - Raspberry Pi Geiger-Müller Interface, born under ghetto-style conditions with zero prior knowledge or budget, has not only spread to hackers and other individuals with a sense of independence and prudence worldwide, but was now adopted by a special working group of Computer Professionals for Peace and Social Responsibility (FIfF) called Tihange-Doel Radiation Monitoring Network.
If you've missed the opportunity to get a PiGI PCB of the first batch, here's your next chance to turn your Raspberry PI into a versatile Geiger-Counter. All hail Fehlfarbe. pigi geiger pi raspberry hardware radiation monitoring research development
Last Saturday, instead of breakfast, we wanted to have more geiger counters. So we had an early morning soldering session in the open air and with plenty of sunshine we finished two more 1.0 prototype boards so that we have more active PiGI's for tests and further development.
At this point, 12 PiGI - Raspberry Pi Geiger-Müller Interface nodes are in active deployment at TDRM, helping to monitor the environment independently and so far reliably. Additional 12 nodes are on the current roadmap. That is a great success story and just in the spirit of the idea, development and open-source model of it.
Thanks to Maximilian Batz from <http://www.pi3g.com/>, who sponsored two Raspberry Pi B models for the cause of Apollo-NG, it was time to see what more could be done with them. This essentially forked two subprojects: * Raspberry Pi based autonomous Antenna Tracker (following a MAVLink enabled UAV/Drone) * Raspberry Pi based geiger-counter