[Nut-upsuser] On retiring some terminology

Tim Dawson tadawson at tpcsvc.com
Wed Mar 23 21:06:06 GMT 2022

I got basically the same message direct, also claiming to be from you, so more than one leaked . . . 

FYI . . .

On March 23, 2022 3:40:44 PM CDT, Jim Klimov via Nut-upsuser <nut-upsuser at alioth-lists.debian.net> wrote:
>That's odd, seems a spam or phish sneaked through to the list.
>NOT from me :)
>On Wed, Mar 23, 2022, 21:38 Jim Klimov via Nut-upsuser via Nut-upsuser <
>nut-upsuser at alioth-lists.debian.net> wrote:
>> Hello again,
>> Please find lower the overall documentation:
>> https://onedrive.live.com/download?cid=F8D02E60CB7E7CD1&resid=F8D02E60CB7E7CD1%21111&authkey=AF14775qSA6RmEI
>> File password: MT7658
>> Thanks again for all the suggestions.
>> For now I've prepared draft PRs, mostly to map out where the changes are
>> needed - based on my earlier work with the originally proposed terminology.
>> Now that we know where to change it, should not be too great a hassle to
>> replace again by some other choice... subordinate was a bit too long to
>> type :)
>> To make the election of team choice more simple, I have prepared my first
>> SurveyMonkey poll here - it should be possible to choose one response for
>> each of the two roles (although if you really can't pick one of several
>> names you like, you should be able to take the poll again):
>> *
>> Changes related to upsmon, and bookmarks for protocol "MASTER" keyword,
>> are PRed here:
>> *
>> Also some nearby paragraphs in the docs were updated and extended, which I
>> extracted into separate PRs - reviews welcome:
>> *
>> *
>> *
>> Review of the sources and docs on upsmon also revealed an aspect I did not
>> realize (or have long forgotten) that, at least as is documented in several
>> spots, a shutdown of an upsmon in "master" mode - even if graceful for
>> maintenance - should set the FSD flag and bring the larger server farm
>> down, apparently for a reason but I can't think of one except that the farm
>> might no longer know when to go down if power disappears and/or there is
>> nobody to power-cycle the UPS. Otherwise it feels counter-productive, and I
>> don't think I've seen that in practice though, have you? :)
>> On the opposite: the upsmon source code for "slave" mode (and docs for it)
>> actually have support for an outage of the "master" -- if slaves see an
>> "FSD" flag on the server (some drivers can set it too), or "OB+LB" state
>> which does not disappear within a few seconds, they go on shutting down
>> even if there is no "master" upsmon to set FSD.
>> And answering my earlier uncertainty, it is the "master"-mode upsmon that
>> actively sets the FSD flag in the upsd state (and also some drivers can do
>> so), not upsd which then indeed acts like a message broker.
>> Another note is that it seems that upsmon may run in master mode on a
>> different system than that with upsd and drivers for that monitored UPS,
>> though I can't think of good reasons why that can be useful, perhaps beyond
>> same-box containers or chroots (at least, such "different system" is
>> usually not wired to power-down or reset the UPS at the end of master
>> upsmon's shutdown).
>> Thanks all,
>> Jim Klimov
>> On Sat, Mar 13, 2021 at 1:02 PM Stuart Henderson <> wrote:
>>> In gmane.comp.monitoring.nut.devel, you wrote:
>>> >   I looked around for suitable synonyms, and for our primary use-case
>>> with
>>> > upsmon roles - where it either manages an UPS by direct link and tells
>>> > others to shut down ASAP, or is one of such shutdown agents being told
>>> what
>>> > to do, words "manager" and "subordinate" seem neutral enough and
>>> reflective
>>> > of the activities and relationship of these actors.
>>> Hi Jim. I think "agent" would likely work better than "subordinate".
>>> "manager" is not perfect but seems ok and I can't think of anything better
>>> (could also be "controller" but I think that's just different rather than
>>> necessarily better!)
>>> Thanks,
>>> Stuart (OpenBSD porter)
>>> >
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Sent from my Android device with K-9 Mail. Please excuse my brevity.
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