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It'd be nice to have a HUD of the entire cluster's activity. Munin is lightweight, easy to get going, and can maybe run on one of the three webservers, or on the caching server maybe...
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This will be helpful information when it comes time to work on a potential inline UPS.
Some numbers:
| Pi State | Power Consumption | Per Pi (average) |
| --- | --- | --- |
| Idle | 170 mA (7.2W) | …
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**tl;dr** [Getting Gigabit Networking on a Raspberry Pi 2 and B+](http://www.midwesternmac.com/blogs/jeff-geerling/getting-gigabit-networking)
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I'd like to see what gives us the most bang for the…
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There are a few considerations here (along with the determination as to what balancing software to use—see #1):
1. Should the balancer have two network interfaces—one for public, one for internal?
2. …