Change label of specific metric inside prometheus and VM database

[Lukáš Míča]

Hello,

I would like to ask you, if is it possible additionaly change label values of metrics which were already scraped inside prometheus and Victoria Metrics database.

Thank you for the response

Lukáš

[Brian Candler]

[Talking about prometheus only here]

You can change labels within PromQL expressions in queries:

https://prometheus.io/docs/prometheus/latest/querying/functions/#label_replace

And you can use recording rules to generate new timeseries with the result of those queries.

But changing the labels *inside* the database on *already scraped* data? I haven't seen anything like that.

If you can export and re-ingest the corrected data, e.g. using backfilling, then you can delete the old timeseries.

[Serg]

Stored series could not be further altered. Although you can delete them
using HTTP API:
https://prometheus.io/docs/prometheus/latest/querying/api/#delete-series

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