In Grafana, you can create custom visualizations by setting thresholds based on specific conditions. While thresholds are typically set using numerical values, it is possible to define thresholds based on string values, such as “production,” “staging,” or “development,” to modify the visualization color dynamically. Below is a step-by-step guide to setting thresholds based on string values in Grafana.
Here are steps to change background colour by string values
Step 1: Create and add new visualization in grafana
Step 2: Now go to the canvas dashboard and create new canvas visualization
Step 3: Now click on add item and add Metric value
Step 4: Now map it to your actual string field in my case the string field is Data 1 so I have selected that field.
Step 5: Now go to the add value mapping section and click on add value mapping.
Step 6: Now add value mapping as per your requirement.
For eg.
Step 7: Now click on set color and set the color
Step 8: Now go to the selected element background section and map the background color to your field
Final Outcome:-
Conclusion
Setting thresholds based on string values in Grafana is achieved by using value mappings combined with custom colors for each string. Although thresholds are typically numerical, this method provides an effective way to create dynamic, color-coded visualizations for string-based data such as environment statuses or service states.