One way to retrieve the latest date value of a specific label from Prometheus and present it on Grafana is to use a Prometheus query to get the most recent data point for the matching label and then display it on a Grafana panel.
To do this, follow these steps:
- In Grafana, create a new panel and select the appropriate Prometheus data source.
- In the panel editor, select the Metrics tab.
- Select the appropriate metric that contains the label you want to retrieve the latest date value for.
- In the Query field, enter the Prometheus query that retrieves the most recent data point for the label, such as
max_over_time(metric_name{label_name="value"}[1h]). - Customize the visualization options as needed and save the panel.
This should display the latest date value of the specified label on the Grafana panel.
