Add instance label

[yjuba]

Is it possible to add an instance label to each metric?
Prometheus fails to record metrics correctly when multiple k6 write to a single Prometheus.

[codebien]

Hi @yjuba, can you clarify how you run your multiple k6 instances? Are you running the k6-operator or just k6 in parallel across several machines?

Anyway, you should be able to do it defining a test-wide tag https://k6.io/docs/using-k6/tags-and-groups/#test-wide-tags

[yjuba]

Hi @codebien

Are you running the k6-operator or just k6 in parallel across several machines?

I running k6 in parallel across several machines.
I am not using the k6-operator.

I was able to add an instance label by executing the following command.

k6 run --tag 'instance=192.0.2.100:6565' -o xk6-prometheus-rw script.js

Thank you for your prompt and accurate reply.