Exporter returns zero values instead of no data when UPS is disconnected

mdlayher / apcupsd_exporter

Prometheus exporter that exposes metrics from apcupsd's NIS. MIT Licensed.

MIT License

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Exporter returns zero values instead of no data when UPS is disconnected #27

Open WGH- opened 3 months ago

WGH- commented 3 months ago

When UPS is disconnected, apcupsd_exporter returns zero metrics (e.g. apcupsd_line_volts{ups="foobar"} 0) instead of returning error or just omitting missing metrics values, which pollute Prometheus with bogus data.