Extend Prometheus Scaler to populate the namespace field by reference

[ZeidH]

Proposal

I would like to be able to reference the namespace that the ScaledJob or ScaledObject is currently deployed in with the Prometheus Scaler's namespace field.

So that instead of:

triggers:
- type: prometheus
  metadata:
    ...
    namespace: example-namespace  # for namespaced queries, eg. Thanos

Do something more dynamic like:

    ...
    namespace: 
      fieldRef: metadata.namespace

Use-Case

For us the namespace field is required as we use thanos-querier as our metric source, similar to many OpenShift users.

Having the namespace field referenced would save us a lot of hassle with kustomize replacements and post-sync jobs to manage that namespace field automatically.

Is this a feature you are interested in implementing yourself?

Maybe

Anything else?

No response