Memory Requests Equal Limits

apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: memory-requests-equal-limits
  annotations:
    policies.kyverno.io/title: Memory Requests Equal Limits
    policies.kyverno.io/category: Sample
    policies.kyverno.io/severity: medium
    policies.kyverno.io/subject: Pod
    policies.kyverno.io/minversion: 1.6.0
    policies.kyverno.io/description: Pods which have memory limits equal to requests could be given a QoS class of Guaranteed if they also set CPU limits equal to requests. Guaranteed is the highest schedulable class.  This policy checks that all containers in a given Pod have memory requests equal to limits.
spec:
  validationFailureAction: Audit
  background: false
  rules:
    - name: memory-requests-equal-limits
      match:
        any:
          - resources:
              kinds:
                - Pod
      validate:
        message: resources.requests.memory must be equal to resources.limits.memory
        deny:
          conditions:
            any:
              - key: "{{ request.object.spec.containers[?resources.requests.memory!=resources.limits.memory] | length(@) }}"
                operator: NotEquals
                value: 0