Overlay to update HPA Autoscaler Defaults for Tekton

01-overlay.yaml

#@ load("@ytt:overlay", "overlay")

#@overlay/match by=overlay.subset({"kind": "HorizontalPodAutoscaler", "metadata": {"name": "tekton-pipelines-webhook"}}), expects="1+"
---
spec:
  #@overlay/match missing_ok=True
  maxReplicas: 20
  minReplicas: 10
  #@overlay/remove
  metrics:
  
#@overlay/match by=overlay.subset({"kind": "HorizontalPodAutoscaler", "metadata": {"name": "tekton-pipelines-webhook"}}), expects="1+"
---
spec:
  #@overlay/match missing_ok=True
  metrics:
  - resource:
      name: cpu
      target:
        averageUtilization: 90
        type: Utilization
    type: Resource

02-hpa.yaml

apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
  name: tekton-pipelines-webhook
  namespace: tekton-pipelines
spec:
  maxReplicas: 5
  metrics:
  - resource:
      name: cpu
      target:
        averageUtilization: 100
        type: Utilization
    type: Resource
  minReplicas: 1
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: tekton-pipelines-webhook