k8s cluster receiver uses to be removed k8s API kinds

[duritong]

Currently the otel-collector requests batch/v1beta1 CronJob and autoscaling/v2beta2 HorizontalPodAutoscaler from the API

These API kinds in that API version are going to be removed in k8s 1.25:

• https://kubernetes.io/docs/reference/using-api/deprecation-guide/#cronjob-v125
• https://kubernetes.io/docs/reference/using-api/deprecation-guide/#horizontalpodautoscaler-v125

This is with otel 0.67.0

[atoulme]

Thank you for the report. We'll take a look and report upstream as needed.

[jvoravong]

If I recall properly, this receiver spins up and checks the k8s environment to make sure it uses the proper api for these two kinds. We should be safe once those deprecated apis disappear, we may want to clean up some dead code paths later.

Reference: open-telemetry/opentelemetry-collector-contrib#9523

[jvoravong]

• Back in April of 2022 the OpenTelemetry community prepared for this exact issue for CronJob.
  • The collector will start up and check what versions of CronJob to use. We support the deprecated batch/v1beta1 CronJob and the stable and current version of CronJob named batch/v1 CronJob.
  • We don’t have to fix anything with CronJob.
• For v2beta2 HorizontalPodAutoscaler, we do need to some work to support the upcoming releases.
  • Right now we only support v2beta2 HPA. To support Kubernetes v1.26, we need to add support for v2 HPA.
  • Kubernetes v1.26 was released in December 2022. This version is still new and distributions like AKS, EKS, ROSA, and GKE will start using it soon (if not already).

I originally only scoped validation testing for this ticket to Kuberenetes v1.25 because that was all the was mentioned in conversations and tickets, thus I am closing ticket. I’ll get the right tickets filed for supporting Kubernetes v1.26 with v2 HPA.