apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: require-resource-limits
  annotations:
    policies.kyverno.io/title: Require Resource Limits
    policies.kyverno.io/category: Zero Trust
    policies.kyverno.io/severity: medium
spec:
  validationFailureAction: Audit
  background: true
  rules:
    - name: require-limits
      match:
        any:
          - resources:
              kinds:
                - Pod
      exclude:
        any:
          - resources:
              namespaces:
                - kube-system
                - kube-node-lease
                - kyverno
                - argocd
                - authentik
                - cert-manager
                - cnpg-system
                - envoy-gateway-system
                - external-secrets
                - istio-system
                - kiali-operator
                - mariadb-system
                - prometheus
                - redis-operator
                - reloader
                - rook-ceph
                - scylla-operator
                - vault
                - gitlab
                - netbird
                - grafana
                - crowdsec
                - external-dns
                - nextcloud
                - mqtt
                - home-assistant
                - guacamole
                - teslamate
                - unpoller
                - frigate
                - checkov
                - scylla-manager
      validate:
        message: "All containers must have CPU and memory limits defined."
        pattern:
          spec:
            containers:
              - resources:
                  limits:
                    cpu: "?*"
                    memory: "?*"