kube-state-metrics configuration for VPA metrics

kube-state-metrics-vpa.yaml

## Kube State Metrics to get VPA metrics
# Old vs New metrics:
# - kube_verticalpodautoscaler_labels -> kube_customresource_verticalpodautoscaler_labels
# - kube_verticalpodautoscaler_status_recommendation_containerrecommendations_target -> kube_customresource_verticalpodautoscaler_status_recommendation_containerrecommendations_target
# - kube_verticalpodautoscaler_status_recommendation_containerrecommendations_lowerbound -> kube_customresource_verticalpodautoscaler_status_recommendation_containerrecommendations_lowerbound
# - kube_verticalpodautoscaler_status_recommendation_containerrecommendations_upperbound -> kube_customresource_verticalpodautoscaler_status_recommendation_containerrecommendations_upperbound
# - kube_verticalpodautoscaler_status_recommendation_containerrecommendations_uncappedtarget -> kube_customresource_verticalpodautoscaler_status_recommendation_containerrecommendations_uncappedtarget
# Resources:
# - https://github.com/kubernetes/kube-state-metrics/blob/main/docs/customresourcestate-metrics.md#verticalpodautoscaler
# - https://github.com/kubernetes/kube-state-metrics/issues/2041#issuecomment-1614327806

kube-state-metrics:
  rbac:
    extraRules:
      - apiGroups: ["autoscaling.k8s.io"]
        resources: ["verticalpodautoscalers"]
        verbs: ["list", "watch"]
  customResourceState:
    enabled: true
    config:
      kind: CustomResourceStateMetrics
      spec:
        resources:
          - groupVersionKind:
              group: autoscaling.k8s.io
              kind: "VerticalPodAutoscaler"
              version: "v1"
            labelsFromPath:
              verticalpodautoscaler: [metadata, name]
              namespace: [metadata, namespace]
              target_api_version: [spec, targetRef, apiVersion]
              target_kind: [spec, targetRef, kind]
              target_name: [spec, targetRef, name]
            metrics:
              # Labels
              - name: "verticalpodautoscaler_labels"
                help: "VPA container recommendations. Kubernetes labels converted to Prometheus labels"
                each:
                  type: Info
                  info:
                    labelsFromPath:
                      name: [metadata, name]
              # Memory Information
              - name: "verticalpodautoscaler_status_recommendation_containerrecommendations_target"
                help: "VPA container recommendations for memory. Target resources the VerticalPodAutoscaler recommends for the container."
                each:
                  type: Gauge
                  gauge:
                    path: [status, recommendation, containerRecommendations]
                    valueFrom: [target, memory]
                    labelsFromPath:
                      container: [containerName]
                commonLabels:
                  resource: "memory"
                  unit: "byte"
              - name: "verticalpodautoscaler_status_recommendation_containerrecommendations_lowerbound"
                help: "VPA container recommendations for memory. Minimum resources the container can use before the VerticalPodAutoscaler updater evicts it"
                each:
                  type: Gauge
                  gauge:
                    path: [status, recommendation, containerRecommendations]
                    valueFrom: [lowerBound, memory]
                    labelsFromPath:
                      container: [containerName]
                commonLabels:
                  resource: "memory"
                  unit: "byte"
              - name: "verticalpodautoscaler_status_recommendation_containerrecommendations_upperbound"
                help: "VPA container recommendations for memory. Maximum resources the container can use before the VerticalPodAutoscaler updater evicts it"
                each:
                  type: Gauge
                  gauge:
                    path: [status, recommendation, containerRecommendations]
                    valueFrom: [upperBound, memory]
                    labelsFromPath:
                      container: [containerName]
                commonLabels:
                  resource: "memory"
                  unit: "byte"
              - name: "verticalpodautoscaler_status_recommendation_containerrecommendations_uncappedtarget"
                help: "VPA container recommendations for memory. Target resources the VerticalPodAutoscaler recommends for the container ignoring bounds"
                each:
                  type: Gauge
                  gauge:
                    path: [status, recommendation, containerRecommendations]
                    valueFrom: [uncappedTarget, memory]
                    labelsFromPath:
                      container: [containerName]
                commonLabels:
                  resource: "memory"
                  unit: "byte"
              # CPU Information
              - name: "verticalpodautoscaler_status_recommendation_containerrecommendations_target"
                help: "VPA container recommendations for cpu. Target resources the VerticalPodAutoscaler recommends for the container."
                each:
                  type: Gauge
                  gauge:
                    path: [status, recommendation, containerRecommendations]
                    valueFrom: [target, cpu]
                    labelsFromPath:
                      container: [containerName]
                commonLabels:
                  resource: "cpu"
                  unit: "core"
              - name: "verticalpodautoscaler_status_recommendation_containerrecommendations_lowerbound"
                help: "VPA container recommendations for cpu. Minimum resources the container can use before the VerticalPodAutoscaler updater evicts it"
                each:
                  type: Gauge
                  gauge:
                    path: [status, recommendation, containerRecommendations]
                    valueFrom: [lowerBound, cpu]
                    labelsFromPath:
                      container: [containerName]
                commonLabels:
                  resource: "cpu"
                  unit: "core"
              - name: "verticalpodautoscaler_status_recommendation_containerrecommendations_upperbound"
                help: "VPA container recommendations for cpu. Maximum resources the container can use before the VerticalPodAutoscaler updater evicts it"
                each:
                  type: Gauge
                  gauge:
                    path: [status, recommendation, containerRecommendations]
                    valueFrom: [upperBound, cpu]
                    labelsFromPath:
                      container: [containerName]
                commonLabels:
                  resource: "cpu"
                  unit: "core"
              - name: "verticalpodautoscaler_status_recommendation_containerrecommendations_uncappedtarget"
                help: "VPA container recommendations for cpu. Target resources the VerticalPodAutoscaler recommends for the container ignoring bounds"
                each:
                  type: Gauge
                  gauge:
                    path: [status, recommendation, containerRecommendations]
                    valueFrom: [uncappedTarget, cpu]
                    labelsFromPath:
                      container: [containerName]
                commonLabels:
                  resource: "cpu"
                  unit: "core"