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Date:      Fri, 9 Jun 2000 18:25:10 -0700
From:      "Donald Fast" <djfast@telus.net>
To:        <stable@FreeBSD.ORG>
Subject:   RE: APC Back-UPS Pro
Message-ID:  <000101bfd27a$b7f6a160$9232e8d8@bc.hsia.telus.net>
In-Reply-To: <002b01bfd252$586b4700$b8209fc0@campbellmithun.com>

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> -----Original Message-----
> From: owner-freebsd-stable@FreeBSD.ORG
> [mailto:owner-freebsd-stable@FreeBSD.ORG]On Behalf Of Shawn Barnhart
> Sent: Friday, June 09, 2000 1:36 PM
> To: stable@FreeBSD.ORG
> Subject: Re: APC Back-UPS Pro
> 
> 
> ----- Original Message -----
> From: "Doug White" <dwhite@resnet.uoregon.edu>
> 
> | The problem with this is doing it securely. You can have one monitor
> | machine but having some automated way of telling the others to shutdown
> | that can't be tricked is a tough problem.  ssh with a null-passphrase RSA
> | key is about as close as you can get, but that doesn't keep root on one
> | machine from telling the others to shutdown, but that may not be a problem
> | in your environment :)
> 
> Does any of the UPS stuff on FreeBSD do it securely?
> 
> It seems like it would be safer for a client machine to poll the
> UPS-monitoring server for power status vs. having the monitoring server
> alert its clients to do something like shut down.
> 
> On the more sophisticated end you could do it as an SNMP trap, or you could
> just write the UPS status to a file on the monitoring box and the clients
> could fetch the status periodically and make their own decisions about what
> to do when the power went off.
> 
or you could get the multi-computer option 
http://www.apcc.com/products/management/shareups_smartslot_spec.cfm
and then each machine can decide on its onw


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