apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: require-resource-requests
  annotations:
    policies.kyverno.io/title: Require CPU and memory requests
    policies.kyverno.io/category: Best Practices
    policies.kyverno.io/severity: medium
    policies.kyverno.io/description: >-
      Require regular and init containers to set cpu and memory requests.
spec:
  validationFailureAction: Enforce
  background: true
  rules:
    - name: require-cpu-memory-requests
      match:
        any:
          - resources:
              kinds:
                - Pod
      exclude:
        any:
          - resources:
              namespaces:
                - kube-system
                - kube-public
                - kube-node-lease
                - flux-system
                - flux-canary
                - kyverno
                - cert-manager
                - cilium-secrets
                - olm
                - operators
                - longhorn
                - openebs
                - intel-system
                - nfd
      validate:
        message: >-
          Containers must set resources.requests.cpu and resources.requests.memory.
        pattern:
          spec:
            =(initContainers):
              - resources:
                  requests:
                    memory: "?*"
                    cpu: "?*"
            containers:
              - resources:
                  requests:
                    memory: "?*"
                    cpu: "?*"