Nut upsuser - Aug 2020 - Synology NAS is shutting down Ubuntu servers after very brief power outage (fwd)

Not much in the way of configuration…. I’m pretty sure I’ve got it correct.


--
Todd Benivegna // todd at benivegna.com
On Aug 13, 2020, 8:54 PM -0400, Manuel Wolfshant <wolfy at
nobugconsulting.ro>, wrote:
> On August 14, 2020 3:46:05 AM GMT+03:00, Todd Benivegna <todd at
benivegna.com> wrote:
> > So I finally got a test in after I changed my RPi to the master and
> > everything else (including my Synology) to slaves.  Before I did that
> > though, I timed the shutdown of my Synology since it is the slowest
> > slave to shutdown.  It took 40 seconds to shutdown, so I changed
> > HOSTSYNC in upsmon.conf on the master (“Proton”) to 60.  I then did a
> > test ("sudo upsmon -c fsd”). The slaves shutdown, then eventually
the
> > master, but the Synology never powered down and the UPS powered off
> > which cut the power to it while it was still on.  Anyone know what the
> > heck is going on?
> Beside the ups mngmnt software ( after Roger's analysis I refuse to
call it "nut" any more) on the Synology being a POS ?
> Assuming you did configure correctly the client on the Synology, I guess
that probably they reimplemented the slave part just as well as the server..
>
> I wonder how difficult it would be to rip off their modifications and
revert to a.standard, functional nut.
>
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On August 14, 2020 4:01:17 AM GMT+03:00, Todd Benivegna <todd at
benivegna.com> wrote:
>Not much in the way of configuration…. I’m pretty sure I’ve got it
>correct.
>
We have a saying here "do not force it, use a bigger hammer".
Just setup a timer on proton triggered by LB (or whenever you seem fit , like 
"5 more minutes of power left" ). When activated, have a script
connect via ssh to the NAS and kindly ask it to shutdown (i.e "ssh admin at
Synoligy poweroff').

Far from elegant but saves the data.

> We have a saying here "do not force it, use a bigger hammer".
> Just setup a timer on proton triggered by LB (or whenever you seem fit ,
like "5 more minutes of power left" ). When activated, have a script
connect via ssh to the NAS and kindly ask it to shutdown (i.e "ssh admin at
Synoligy poweroff').
I’d do that, but I have no idea how to write scripts or setup the trigger….

--
Todd Benivegna // todd at benivegna.com
On Aug 13, 2020, 9:34 PM -0400, Manuel Wolfshant <wolfy at
nobugconsulting.ro>, wrote:
> On August 14, 2020 4:01:17 AM GMT+03:00, Todd Benivegna <todd at
benivegna.com> wrote:
> > Not much in the way of configuration…. I’m pretty sure I’ve got it
> > correct.
> >
>
> We have a saying here "do not force it, use a bigger hammer".
> Just setup a timer on proton triggered by LB (or whenever you seem fit ,
like "5 more minutes of power left" ). When activated, have a script
connect via ssh to the NAS and kindly ask it to shutdown (i.e "ssh admin at
Synoligy poweroff').
>
> Far from elegant but saves the data.
>
>
>
>
> _______________________________________________
> Nut-upsuser mailing list
> Nut-upsuser at alioth-lists.debian.net
> https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser
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On August 14, 2020 4:34:17 AM GMT+03:00, Manuel Wolfshant <wolfy at
nobugconsulting.ro> wrote:
>On August 14, 2020 4:01:17 AM GMT+03:00, Todd Benivegna
><todd at benivegna.com> wrote:
>>Not much in the way of configuration…. I’m pretty sure I’ve got it
>>correct.
>>
>
>We have a saying here "do not force it, use a bigger hammer".
>Just setup a timer on proton triggered by LB (or whenever you seem fit
>, like  "5 more minutes of power left" ). When activated, have a
script
>connect via ssh to the NAS and kindly ask it to shutdown (i.e "ssh
>admin at Synoligy poweroff').
>
>Far from elegant but saves the data.
Actually I thought another ugly hack which replaces the ssh command.
If you have netcat or if bash on the synology knows about /dev/tcp it is easy to
write a daemon-like script which lustens on a specific port and triggers a
shutdown when receiving a command from a script launched when needed on proton.