# infrastructure/kyverno/policies/require-resource-limits.yaml
# Ensures all pods have resource limits defined
# Prevents resource exhaustion and enables proper scheduling
apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: require-resource-limits
  annotations:
    policies.kyverno.io/title: Require Resource Limits
    policies.kyverno.io/category: Best Practices
    policies.kyverno.io/severity: medium
    policies.kyverno.io/subject: Pod
    policies.kyverno.io/description: >-
      Resource limits prevent a single workload from consuming excessive
      cluster resources. This policy requires all containers to define
      CPU and memory limits.
spec:
  validationFailureAction: Enforce
  background: true
  rules:
    - name: validate-resources
      match:
        any:
          - resources:
              kinds:
                - Pod
      exclude:
        any:
          - resources:
              namespaces:
                - kube-system
                - kyverno
      validate:
        message: "CPU and memory limits are required. Add resources.limits.cpu and resources.limits.memory."
        pattern:
          spec:
            containers:
              - resources:
                  limits:
                    memory: "?*"
                    cpu: "?*"