FWIW the official Kubernetes Horizontal Pod autoscaler supports custom metrics. Relevant doc: https://kubernetes.io/docs/tasks/run-application/horizontal-... I’m not expert enough to assess whether yours is a reimplementation but I’m curious if you used the existing support and built on top of it.
Yes, I used the method they describe in that page, particularly:
"Register your resource metrics API and your custom metrics API with the API aggregation layer. Both of these API servers must be running on your cluster."
The blogpost goes through the implementation of the required "custom-metrics-api" and how to plug this new API server in your existing Kubernetes environment.
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The blogpost goes through the implementation of the required "custom-metrics-api" and how to plug this new API server in your existing Kubernetes environment.