How is the circle of lights set up? What does it show? | Hacker News

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		PanMan on Aug 21, 2014 \| parent \| context \| favorite \| on: Multi-Datacenter Cassandra on 32 Raspberry Pi’s How is the circle of lights set up? What does it show?

robszumski on Aug 21, 2014 [–]

The two rings in the middle are from OpsCenter, the admin UI that they provide. The lights on the outside are from the LED on the Pis I believe.

If you hit the button, I believe one of the rings would turn red but the cluster would still be able to function.

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