Gauge

The Gauge Widget be used to display a single number. This is useful for displaying e.g. the number of errors per day or the number of active connections to a system.

Input Format

The Guage Widget can any data with at least one field containing a number. It multiple rows are present in the input, the first element is used. If multiple number fields are present, it is unspecified which field is used.

Usage

The Gauge Widget is best used in conjunction with functions such as sum , count , or avg which produce a single row with a single field, e.g. _sum.

Using the widget’s Style editor can configure the widget to assume different colors for different value ranges. You could for instance make the background turn yellow if the value is >100, and red if it is >500.

Example: Displaying Counting Errors

If we wanted to show the number of errors a system, we could count them using:

loglevel = /error/i | count()

This produces a single result with a field _count. If the Gauge widget is selected, it will automatically select the first field it sees at use it as the value to display.