On Aug 8, 2017, at 6:34 PM, Todd Benivegna <t...@benivegna.com> wrote:
> 
> OS name and version:  MacOS 10.9.5 on 2011 Mac mini
> NUT version:  2.7.4-1
> NUT installation method:  Package installed via FINK and FinkCommander
> Exact device name:  APC Back-UPS NS 650M1 (brand new)
> 
> Issue:  
> 
> I have the NUT client installed and running properly; two processes running 
> as root and the other as regular user processes.  The NUT server is my 
> Synology NAS (DS416).  Client is communicating with server (confirmed by 
> running "sudo upsc UPS@[Your_IP]”).  It receives events when I manually pull 
> the power plug and shuts down properly when I do a forced shutdown (by doing 
> “sudo upsmon -c fsd” via telnet on the NAS).
> 
> The problem is when there is an actual brief power outage of a few seconds, 
> maybe 5 - 10 seconds max.  The NAS stays powered up, however the Mac mini 
> (NUT client) shuts down.  When booted back up it immediately shuts down again.

When it is in that state, what do you get from "upsc UPS@[IP] ups.status"? (Not 
a big deal, but upsc doesn't need root privileges - it just connects over a TCP 
socket.)

> It will keep shutting down as soon as it boots up in MacOS and will keep 
> doing that until I reboot the NAS.  I’m not sure if the problem is the client 
> or server, however I’ve been talking to Synology Tech Support and this was 
> their last message:
> 
> "Can you please check the NUT settings on your Clients and make sure that 
> there is enough of a delay/wait period after it gets the signal.”
> 
> What delay are they talking about?  I have looked through the upsmon.conf and 
> am not sure if anything there is the appropriate delay to adjust.  Does that 
> even seem right?  Is the problem with the client or the server?  I can paste 
> my upsmon.conf and any logs if necessary.  Any help would be greatly 
> appreciated.  Thank you.

Unless the ups.status value is "OB LB", a basic upsmon configuration won't shut 
down a client system for just a brief excursion onto battery power. Beyond 
that, things get complicated, so we would need to see how things are 
configured. Be sure to blank out any passwords, and you can also strip out 
lines with comments in the configuration ("grep -v '^#'" or something similar).

Be sure to CC the list on the reply - other people on the list are more 
familiar with the "shut down after N minutes" style of shutdown than I am.
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