[Nut-upsuser] iMAC does not shutdown

Simone Severini severini.simone at gmail.com
Thu Jun 4 14:41:54 UTC 2015

Thanks for your help!
In red below.

On Thu, Jun 4, 2015 at 2:45 PM, Charles Lepple <clepple at gmail.com> wrote:

> On Jun 3, 2015, at 11:45 AM, Simone Severini <severini.simone at gmail.com>
> wrote:
> Hi everybody!
> It has been a journey but I almost manage to make my UPS properly
> communicate.
> This is the config:
> UPS Mecer/Mustek 2000 VA connected via USB with blazer_usb driver.
> MASTER Raspberry PI-1
> SLAVE Raspberry PI-2
> SLAVE iMac OSX 10.10.3
> I can get access to the UPS from any of the three devices successfully.
> Problems:
> 1. When I launch /usr/local/ups/sbin/upsmon -c fed for testing I see
> Rasp-2 Slave going down, Rasp-1 going down, iMac completely ignoring and
> not receiving any broadcast message on the terminal then brutally killed as
> the UPS auto shutdown.
> If you search for 'upsmon' in /var/log/system.log on the iMac, does it
> appear to be logged in to upsd on the master?
> Jun  4 16:34:23 Simone.Home upsmon[1081]: writepid: fopen
> /opt/local/var/run/upsmon.pid: Permission denied
> Jun  4 16:34:24 Simone.Home upsmon[1081]: Login on UPS [
> ME-2000 at] failed - got [ERR ACCESS-DENIED]

So there is one problem. How can I change permission on upsilon.pid. The
access denied is it due to wrong username/password?

> My Mac has a local UPS, so I haven't looked into whether upsmon properly
> reconnects after sleep.
> 2. When I have done a live test, the Master Rasp never intercepted any
> FLAG from UPS and UPS just died but halting just RASP-1 properly (connected
> via cable). iMac ignored the whole procedure.
> You didn't mention which version of NUT you are using, but for recent
> versions, both the blazer_usb and nutdrv_qx drivers can be configured to
> generate their own LB signal based on runtime or percent charge. See the
> documentation for 'ignorelb' in ups.conf.
> Thanks. I'm running Network UPS Tools upsmon 2.6.5-Unversioned directory

> 3. Is there any way to intercept which type of flag message my UPS sends
> (log files) to upsmon?
> If you run upsmon with '-DDD', it will log changes to stderr. Another '-D'
> should log each poll cycle regardless of whether status has changed.
> Another option is to run upslog to see the rate of discharge when the UPS
> is on battery. If the charge is falling faster than you expect, the battery
> may be dead, or the UPS may need to be recalibrated. This may help with the
> previous question.
> Thanks for the hint
> 4. I need to halt manually a linux based NAS via SSH. What is the best way
> (upsched or a script that parses battery.charge and takes decision
> independently from NUT).
> It depends what you want the trigger to be. You can use upssched to power
> down after a certain amount of time on battery, or when the low battery
> flag is sent. Either way, you will probably need to ensure that the UPS
> shuts off its outlets momentarily after the NAS has received the shutdown
> signal, especially when the power comes back before the UPS battery is
> depleted.
Got it

> --
> Charles Lepple
> clepple at gmail
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