55 lines
1.9 KiB
Text
55 lines
1.9 KiB
Text
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Desc: Typical setups for data rooms
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File: data-room.txt
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Date: 27 May 2002
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Auth: Russell Kroll <rkroll@exploits.org>
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The split nature of this UPS monitoring software allows a wide variety of
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power connections. This document will help you identify how things should
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be configured using some general descriptions.
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There are two main elements:
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1. There's a UPS attached to a serial port on this system.
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2. This system depends on a UPS for power.
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You can play "mix and match" with those two to arrive at these descriptions
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for individual hosts:
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A: 1 but not 2
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B: 2 but not 1
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C: 1 and 2
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A small to medium sized data room usually has one C and a bunch of Bs.
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This means that there's a system (type C) hooked to the UPS which depends
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on it for power. There are also some other systems in there (type B)
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which depend on that same UPS for power, but aren't directly connected to
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it.
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Larger data rooms or those with multiple UPSes may have several "clusters"
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of the "single C, many Bs" depending on how it's all wired.
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Finally, there's a special case. Type A systems are connected to a UPS's
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serial port, but don't depend on it for power. This usually happens when
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a UPS is physically close to a box and can reach the serial port, but
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the wiring is such that it doesn't actually feed it.
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Once you identify a system's type, use this list to decide which of the
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programs need to be run for monitoring:
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A: driver and upsd
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B: upsmon (as slave)
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C: driver, upsd, and upsmon (as master)
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To further complicate things, you can have a system that is hooked to
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multiple UPSes, but only depends on one for power. This particular
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situation makes it an "A" relative to one UPS, and a "C" relative to the
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other. The software can handle this - you just have to tell it what to
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do.
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Multi-power supply boxes
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========================
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If you are running large server-class systems that have more than one
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power feed, see big-servers.txt for information on how to handle it
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properly.
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