How to create a dropdown variable with tag values in a Grafana?

Question

I am using Grafana with KairosDB as datasource.

In Grafana dashboard , I want to add a variable with ringId as name, and Basically that dropdown will have to display all the values of tag "ringId" available in the database so that whenever new value comes under ringId tag in database it should be pulled there.

Help me how to write a query in kairosdb to pull all the ringId's. here

Answer 1

You can use: tag_values(<metric_name>, <tag_name>). In your case, <metric_name> should be a metric having ringId as tag.