On Fri, 17 Jun 2022, PeReZ via Nut-upsuser wrote:
I need to manage two UPSes but my host can set and monitor only one.
How are they connected? What software are you using?
So I thinked to install NUT UPS ...
NUT in itself is not a UPS. It is a software package.
... on a Raspberry to monitor both UPSes and to create a dummy ups.
I don't understand this. If the Raspberry is monitoring the two UPSes, why do
you need a dummy ups?
The two UPSes are identical and both have LAN cards but I can connect them via
USB if desiderable.
Can I connect the Raspberry to the host via USB for dummy UPS communications?
I don't understand the topology. A diagram would help.
The dummy ups should do:
- notify ON_BATTERY if both UPSes are on battery
- if both go on LOW battery, change its status to LOW battery also
- send a shutdown comamnd to both UPSes with a delay of 5 minutes so the host
can gracefully stops all VMs and itself
- turn off the Raspberry?
Have you seen the configuration file for a dummy UPS? (File ups.conf) It does
not provide such complex logic.
Roger
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