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If you are using the prometheus exporter, you can use the transform processor to get specific resource attributes into metric labels.

With the advantage that you get only the specific attributes you want, thus avoiding a cardinality explosion.

https://github.com/open-telemetry/opentelemetry-collector-co...

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We've migrated away from the prometheus exporter to the prometheus remote write exporter as I'd like a completely "push" based architecture. Ideally I would have liked to be completely otlp but can't for the reasons already explained. So I use promethus remote write instead in to Mimir.

The transform processor could be useful if they ever deprecate the resource_to_telemetry_conversion flag, but its still a pain point because it hinders a developers autonomy, and requires a whitelist of labels to be maintained on the collectors by another team.

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