Check UPS Mode

This plugin checks the working mode on a RFC 1628 (UPS-MIB) compliant UPS.

Instead of just reporting MIB working modes, it reports modes based on working mode and battery status. Supported modes are:

·Online: Power supply present on UPS input, load is battery protected.
·Bypass: Power supply present on UPS input, but load is NOT battery protected.
·Offline: Power supply is NOT present on UPS input, load is battery protected, battery charge is now low.
·Offline battery low: Same as previous but battery is low.
·Offline battery depleted: Power supply is NOT present on UPS input, battery is depleted so load is NOT protected.

Instead of using factory set battery low level threshold, user can select it using argument -l. Plugin return value is set comparing the current working mode with a comma separated working mode list set for triggering warning and critical states.

Plugin returns battery load percent and battery backup time (in minutes) as performance data.