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Trackers

Trackers help watch mission-critical server data in real-time. All trackers are shown together in a single table to enable efficient monitoring. Each tracker is based on an expression which may refer to some server data or to data originated from hardware devices. A simple expression may be used to monitor some value directly, while a more complicated one can track a combination of several values. For example, a tracker can be easily set up to watch dew point temperature calculated by temperature and absolute humidity measurements coming from different sensors.

Tracker status lets system operators quickly check the state of a tracker by highlighting it in the trackers list. Statuses can help detect trackers that indicate warning and critical conditions of the monitored values. It is possible to associate an unlimited number of user-defined statuses with every tracker.

The value of each active tracker's expression is recalculated periodically. Stateless and disabled trackers may be optionally hidden from the list.