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DocumentationGrafana documentationPanelsModify visualization text and background colorsAdd a threshold to a legacy graph panel

Add a threshold to a legacy graph panel

In the Graph panel visualization, thresholds enable you to add lines or sections to a graph to make it easier to recognize when the graph crosses a threshold.

Before you begin

• Add a panel to a dashboard.

To add a threshold to a graph panel:

1. Navigate to the graph panel to which you want to add a threshold.
2. On the Panel tab, click Thresholds.
3. Click Add threshold.
4. Complete the following fields:
   • T1 - Both values are required to display a threshold.
     • lt or gt - Select lt for less than or gt for greater than to indicate what the threshold applies to.
     • Value - Enter a threshold value. Grafana draws a threshold line along the Y-axis at that value.
   • Color - Choose a condition that corresponds to a color, or define your own color.
     • custom - You define the fill color and line color.
     • critical - Fill and line color are red.
     • warning - Fill and line color are yellow.
     • ok - Fill and line color are green.
   • Fill - Controls whether the threshold fill is displayed.
   • Line - Controls whether the threshold line is displayed.
   • Y-Axis - Choose left or right.
5. Click Save to save the changes in the dashboard.