policy-limitmemory.yaml

apiVersion: policy.open-cluster-management.io/v1
kind: Policy
metadata:
  name: policy-limitmemory
  annotations:
    policy.open-cluster-management.io/standards: NIST SP 800-53
    policy.open-cluster-management.io/categories: SC System and Communications Protection
    policy.open-cluster-management.io/controls: SC-6 Resource Availability
spec:
  remediationAction: inform
  disabled: false
  policy-templates:
    - objectDefinition:
        apiVersion: policy.open-cluster-management.io/v1
        kind: ConfigurationPolicy
        metadata:
          name: policy-limitrange-example
        spec:
          remediationAction: inform # the policy-template spec.remediationAction is overridden by the preceding parameter value for spec.remediationAction.
          severity: medium
          namespaceSelector:
            exclude: ["kube-*"]
            include: ["default"]
          object-templates:
            - complianceType: musthave
              objectDefinition:
                apiVersion: v1
                kind: LimitRange # limit memory usage
                metadata:
                  name: mem-limit-range
                spec:
                  limits:
                  - default:
                      memory: 512Mi
                    defaultRequest:
                      memory: 256Mi
                    type: Container
---
apiVersion: policy.open-cluster-management.io/v1
kind: PlacementBinding
metadata:
  name: binding-policy-limitmemory
placementRef:
  name: placement-policy-limitmemory
  kind: PlacementRule
  apiGroup: apps.open-cluster-management.io
subjects:
- name: policy-limitmemory
  kind: Policy
  apiGroup: policy.open-cluster-management.io
---
apiVersion: apps.open-cluster-management.io/v1
kind: PlacementRule
metadata:
  name: placement-policy-limitmemory
spec:
  clusterConditions:
  - status: "True"
    type: ManagedClusterConditionAvailable
  clusterSelector:
    matchExpressions:
      - {key: environment, operator: In, values: ["dev"]}