policy-autoscaler-templatized.yaml

# This demonstrates configuring ClusterAutoscaler  with values  customized to the target cluster using  HUB-templates
# the below shows three policies 
# 1.policy-autoscaler-templatized-config:  configures a ConfigMap on the HUB which contains the managedcluster specific values for  ClusterAutoscaler resource
# 2.policy-autoscaler-templatized: configures  ClusterAutoScaler resources on target managedclusters with  cluster specific values retrieved from the above ConfigMap
#                            , this policy is disabled  on creation initially. 
# 3.policy-autoscaler-templatized-enabler: checks the status of the policy "policy-autoscaler-templatized-config"  and when it is complaint , 
#                            enables policy-autoscaler-templatized by setting disabled=false on the policy resource. 
#                            This ensures that configmap  with cluster specific values data is created before the policy that retrieves the values from that configmap.


# NOTE
# The file has 3 related policies clubbed together, 
# when deploying through GRC UI Editor pls copy paste each policy resource individually as the ui can handle only one policy at a time.
# pls make sure to deploy all 3 policies in the same namespace and replace any placeholder <POLICIESNS> in this file with the policy namespace.


apiVersion: policy.open-cluster-management.io/v1
kind: Policy
metadata:
  name: policy-autoscaler-templatized
  annotations:
    policy.open-cluster-management.io/standards: NIST 800-53, NIST-CSF
    policy.open-cluster-management.io/categories: CM Configuration Management, PR.IP Information Protection Processes and Procedures
    policy.open-cluster-management.io/controls: CM-2 Baseline Configuration, PR.IP-1 Baseline Configuration
spec:
  remediationAction: enforce
  disabled: true #policy is disabled by default, will be enabled by enabler policy (see below) after the referenced configmap is created
  policy-templates:
    - objectDefinition:
        apiVersion: policy.open-cluster-management.io/v1
        kind: ConfigurationPolicy
        metadata:
          name: policy-autoscaler-templatized
        spec:
          remediationAction: inform
          severity: low
          object-templates:
            - complianceType: musthave
              objectDefinition:
                apiVersion: autoscaling.openshift.io/v1
                kind: ClusterAutoscaler
                metadata:
                  name: default #clusterscoped , no namespace needed
                spec:
                  podPriorityThreshold: -10
                  resourceLimits:
                    maxNodesTotal: '{{hub fromConfigMap "" "autoscaler-config"  (printf "%s-maxnodes" .ManagedClusterName) | toInt hub}}'
                    cores:
                      min: 8
                      max: '{{hub fromConfigMap "" "autoscaler-config"  (printf "%s-cores-max" .ManagedClusterName) | toInt hub}}'
                    memory:
                      min: 4
                      max: '{{hub fromConfigMap "" "autoscaler-config"  (printf "%s-memory-max" .ManagedClusterName) | toInt hub}}'
                    gpus:
                      - type: nvidia.com/gpu
                        min: 0
                        max: 16
                      - type: amd.com/gpu
                        min: 0
                        max: 4
                  scaleDown:
                    enabled: true
                    delayAfterAdd: 10m
                    delayAfterDelete: 5m
                    delayAfterFailure: '{{hub- fromConfigMap "" "autoscaler-config"  (printf "%s-failuredelay" .ManagedClusterName) -hub}}'
                    unneededTime: 5m
---
apiVersion: policy.open-cluster-management.io/v1
kind: Policy
metadata:
  name: policy-autoscaler-templatized-config
  annotations:
    policy.open-cluster-management.io/standards: NIST 800-53
    policy.open-cluster-management.io/categories: CM Configuration Management
    policy.open-cluster-management.io/controls: CM-2 Baseline Configuration
spec:
  remediationAction: enforce
  disabled: false
  policy-templates:
    - objectDefinition:
        apiVersion: policy.open-cluster-management.io/v1
        kind: ConfigurationPolicy
        metadata:
          name: policy-autoscaler-templatized-config
        spec:
          remediationAction: inform
          severity: low
          object-templates:
            - complianceType: musthave
              objectDefinition:
                kind: ConfigMap
                apiVersion: v1
                metadata:
                  name: autoscaler-config
                  namespace: <POLICIESNS>
                data:
                  # Configuration values can be set as key-value properties
                  cluster1-maxnodes: '24'
                  cluster1-cores-max: '128'
                  cluster1-memory-max: "256"
                  cluster1-failuredelay: 30s
                  cluster2-maxnodes: "36"
                  cluster2-cores-max: "256"
                  cluster2-memory-max: "512"
                  cluster2-failuredelay: 45s
                  local-cluster-maxnodes: "24"
                  local-cluster-cores-max: "128"
                  local-cluster-memory-max: "256"
                  local-cluster-failuredelay: 30s
---
apiVersion: policy.open-cluster-management.io/v1
kind: Policy
metadata:
  name: policy-autoscaler-templatized-enabler
  annotations:
    policy.open-cluster-management.io/standards: NIST 800-53
    policy.open-cluster-management.io/categories: CM Configuration Management
    policy.open-cluster-management.io/controls: CM-2 Baseline Configuration
spec:
  remediationAction: enforce
  disabled: false
  policy-templates:
    - objectDefinition:
        apiVersion: policy.open-cluster-management.io/v1
        kind: ConfigurationPolicy
        metadata:
          name: policy-autoscaler-templatized-enabler
        spec:
          remediationAction: inform
          severity: low
          object-templates:
            - complianceType: musthave
              objectDefinition:
                kind: Policy
                apiVersion: policy.open-cluster-management.io/v1
                metadata:
                  name: policy-autoscaler-templatized
                  namespace: <POLICIESNS>
                spec: # disable is set to true if policy status != complaint else it is set to false , 
                  disabled: '{{ ne (lookup "policy.open-cluster-management.io/v1" "Policy" "<POLICIESNS>" "policy-autoscaler-templatized-config").status.compliant "Compliant" |  print | toBool }}'