This is an NUT (Network UPS Tools) exporter for Prometheus.
The exporter relies on tools from the https://github.com/networkupstools/nut (uspc).
A minimal invocation looks like this:
./nut_exporter
Supported parameters include:
port: port to listen on (default:8100)ups: name of the monitored ups (default:none)upsc: path to the upsc executable (default: rely on$PATH)