kyverno/test/best_practices/add_safe_to_evict.yaml

---
apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  annotations:
    policies.kyverno.io/category: Workload Management
    policies.kyverno.io/description: The Kubernetes cluster autoscaler does not evict
      pods that use hostPath or emptyDir volumes. To allow eviction of these pods,
      the annotation cluster-autoscaler.kubernetes.io/safe-to-evict=true must be added
      to the pods.
  name: add-safe-to-evict
spec:
  admission: true
  background: true
  rules:
  - match:
      any:
      - resources:
          kinds:
          - Pod
    mutate:
      patchStrategicMerge:
        metadata:
          annotations:
            +(cluster-autoscaler.kubernetes.io/safe-to-evict): "true"
        spec:
          volumes:
          - <(emptyDir): {}
    name: annotate-empty-dir
  - match:
      any:
      - resources:
          kinds:
          - Pod
    mutate:
      patchStrategicMerge:
        metadata:
          annotations:
            +(cluster-autoscaler.kubernetes.io/safe-to-evict): "true"
        spec:
          volumes:
          - hostPath:
              <(path): '*'
    name: annotate-host-path
  validationFailureAction: Audit