@stephenw10
Hello ! Information on status.
So far, in case of power failure, I want the UPS to start and the initiation of new back-up tasks to become impermissible, Upon a combination of time and remaining charge of the UPS' battery; a proper shut down of the mac; and, if possible, Shut-down of the UPS.
So Far,
On my pfSense firewall SG-1000, there is a pre-installed NUT package, It works already and can trigger termination of NUT clients.
For macOS, (version 10.13 High Sierra, the package manager Homebrew does not work any more, but the package manager MacPorts does), so I would (1) Install or update xCode on the mac; (2) install or update MacPorts, (3) configure and set instructions to slave on pfSense SG-1000, and (4) complete on pfSense the remainder of NUT configuration.
This is my current plan, which seems feasible so far.