[Nut-upsuser] Synology NAS is shutting down Ubuntu servers after very brief power outage (fwd)

Todd Benivegna todd at benivegna.com
Fri Aug 14 19:30:41 BST 2020

Sorry, I guess it is  */usr/syno/bin/synoups*

On Fri, Aug 14, 2020 at 2:27 PM Todd Benivegna <todd at benivegna.com> wrote:

> I found something interesting that I think may apply here.  Check this
> out...
> https://forum.synology.com/enu/viewtopic.php?f=19&t=73960&hilit=ups+slave
> *I have the latest version of the Windows port of NUT (A UPS management
> package) installed on my Windows 7 machine. The UPS I am using is a very
> old APC BK650M which is controlled and sends its status via a special
> serial cable to the Windows machine.*
> *I also have my Synology NAS (which uses NUT for its UPS management)
> connected over the local network as a slave to the Windows NUT master. The
> Synology slave is configured to immediately go into "safe mode" whenever an
> FSD (system shutdown message) or OB+LB (On-Battery and Low Battery)
> indication is received from the Windows NUT master.*
> *The Windows master machine responds correctly to OB+LB events, correctly
> shutting down the master machine. The Synology box also responds to the
> OB+LB events from the master correctly and goes into "safe mode", the
> expected behavior.*
> *The problem comes when using the command "upsmon -c fsd" on the Windows
> NUT master to force a UPS system shutdown to test the system. The Windows
> master shuts down correctly, but the Synology NAS slave does not go into
> "safe mode" when it receives the FSD notification.*
> *I was wondering if there is a bug in the Windows port of NUT such that
> the FSD notification is not sent to the slaves when "upsmon -c fsd" is
> executed.*
> *I then looked into the Synology NAS NUT configuration more closely.*
> *When configured as a NUT slave device, the Synology responds to an FSD
> notification from the NUT master by calling a script defined in the
> Synology's /usr/syno/etc/ups/upssched.conf with an "fsd" argument. The
> script is /usr/syno/bin/synoups.*
> *Before causing the NAS to go into "safe mode", the script first retrieves
> the status of the NUT master with upsc. If the status is "OL" (on-line),
> the script aborts any action for the received FSD notification. Since the
> UPS is actually on-line and not in a low battery state when the test FSD is
> sent from the Windows master, the Synology will not enter "safe mode" - it
> does nothing.*
> *If the device was in OB (on battery), LB (low battery), or OB+LB mode,
> the OL check would fail and the Synology would enter "safe mode", as
> expected.*
> *I tried commenting out the OL status check in the Synology script. The
> Synology slave then enters "safe mode" when a "upsmon -c fsd" is issued
> from the Windows master, as expected.*
> *Interesting that Synology disables the test functionality on the NAS.*
> Roger, do you know where in /usr/syno/etc/ups/upssched.conf the OL status
> check is as mentioned above?  I'd like to comment that out and see if it
> works.  I'd really like to test everything out without waiting for
> the battery to run out, but if not then I will do that; will just take
> about 45 minutes or so.  I would never have guessed that it would do a
> check like that, which basically prevents the "upsmon -c fsd" test!
> On Fri, Aug 14, 2020 at 12:30 PM Todd Benivegna <todd at benivegna.com>
> wrote:
>> Thanks Larry, no problem. I appreciate the input. Whenever you get a
>> chance I’d really like to compare notes with someone who has NUT and a
>> Synology to see why the heck mine doesn’t work! ;). I’m also using my Pi as
>> the master like you. Thanks.
>> Todd
>> --
>> *Todd Benivegna* // todd at benivegna.com
>> On Aug 14, 2020, 11:55 AM -0400, Larry Fahnoe <fahnoe at fahnoetech.com>,
>> wrote:
>> On Fri, Aug 14, 2020 at 10:31 AM Todd Benivegna <todd at benivegna.com>
>> wrote:
>>> I have not edited a single file, including anything to do with NUT, on
>>> the Synology via ssh.... ever. How is yours configured in the UI? Do you
>>> have it set to go into safe mode after a certain number minutes?
>> Hi Todd,
>> I misunderstood (have only been casually reading this thread), I thought
>> you had been editing files on the Synology, but good to know that it is
>> still stock. I do not have access to my Synology appliances (away on
>> travel) so I can't give you an accurate answer on how I have it configured.
>> I will let you know in a few days (once I have access to them again).
>> --Larry
>> --
>> Larry Fahnoe, Fahnoe Technology Consulting, fahnoe at FahnoeTech.com
>>            Minneapolis, Minnesota       www.FahnoeTech.com
> --
> *Todd Benivegna* // todd at benivegna.com

*Todd Benivegna* // todd at benivegna.com
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