Add support to enrich OTLP data with kubernetes metadata

[Sh4d1]

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Use Cases

Some applications in kubernetes, might send out logs & traces to an otlp endpoint. Usually it's done with a "proxy" like otelcollector, or grafana alloy (which uses otelcollector IIRC). They both allow to add kubernetes metadata on the incoming traces or logs, based on source IP, or others.

Attempted Solutions

Currently, Vector can only attach kubernetes metadata to logs taken directly from the pods (which is a valid, and I guess the majority's case), but leave no other options to do what I describe above.

Proposal

I haven't looked that much at the kubernetes' logs source, but I think some code could be re-used to create a kubernetes_pod transform or something like that.

References

No response

Version

0.40.1

[jszwedko]

Hi @Sh4d1 !

Thanks for opening this. I think it is a special case of the more general feature request to have a transform for k8s metadata enrichment: #5077. I'll close this one in-lieu of that one, but let me know if you disagree.

[Sh4d1]

Perfect thanks I missed it, my bad!