Delete old data in prometheus and grafana.

[Sebastian Glock]

Hi I need an clearly information how to delete instance from prometheus and from grafana.

If i change TSDB storage for ex 10s it remove, but all of data from grafana too. Is there any possibly way to delete for example just 1 instance from prometheus & grafana?

Thanks for all your replies!

[Matthias Rampke]

To delete specific sets of time series, enable administrative APIs and use the DeleteSeries endpoint:

https://prometheus.io/docs/prometheus/latest/querying/api/

To match all metrics from a given instance, use a matcher like

{instance="xxx:1234"}

without a metric name.

/MR

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[Matthias Rampke]

Foiled again by mobile Chrome, here is the link to the right section:

https://prometheus.io/docs/prometheus/latest/querying/api/#delete-series

[Sebastian Glock]

Ok so i need to do something like this yes? :

curl -X POST -g 'http://localhost:9090/api/v1/admin/tsdb/delete_series?match[]=up&match[]={instance="wp.pl"}'

I see it removes from prometheus, but when it removes from grafana? after about 24h?

[Stuart Clark]

On 16/03/2021 07:35, Sebastian Glock wrote:
>
> I see it removes from prometheus, but when it removes from grafana?
> after about 24h?

Grafana doesn't store any data, it just performs queries against
Prometheus. So if you delete things from Prometheus it will no longer
appear in Grafana.

--
Stuart Clark

[Sebastian Glock]

Thanks a lot for your replies!