What Grafana version and what operating system are you using?
Grafana 9.3.1 on Debian 11
What are you trying to achieve?
I have a dashboard with 3 variables:
- datasource (a centralised prometheus server)
- boxname: label that is applied to all metrics that are scraped from a given target server
- services: label that is applied to each distinct scraped target inside a given target server
=> 2 distincts target servers shares some of the service labels but have also specific ones.
After selecting a box name, the services dropdown should only display values for services that are effectively present on this server.
How are you trying to achieve it?
I have:
| Variable | Definition | |||||
|---|---|---|---|---|---|---|
| datasource | prometheus | |||||
| boxname | label_values(boxname) | |||||
| service | label_values(service) |
But the service variable does not depend on boxname and so all services for all servers are shown in the drop down.
How can i restrict the list ?
Did you follow any online instructions? If so, what is the URL?
I tried to carefully dig the doc e.g: Prometheus template variables | Grafana documentation
and the forum without success, but might have missed something because it seems to be quite a classic requirements
Among others, I could not find the syntax to use the query_filter(query) for prometheus DS that sounds promising.