5.2.3. Node placement rule examples

To specify the nodes where OLM deploys the OpenShift Virtualization Operators, edit the Subscription object during OpenShift Virtualization installation.

Currently, you cannot configure node placement rules for the Subscription object by using the web console.

The Subscription object does not support the affinity node placement rule.

Example Subscription object with nodeSelector rule:

apiVersion: operators.coreos.com/v1alpha1
kind: Subscription
metadata:
  name: hco-operatorhub
  namespace: openshift-cnv
spec:
  source: redhat-operators
  sourceNamespace: openshift-marketplace
  name: kubevirt-hyperconverged
  startingCSV: kubevirt-hyperconverged-operator.v4.21.8
  channel: "stable"
  config:
    nodeSelector:
      example.io/example-infra-key: example-infra-value

OLM deploys the OpenShift Virtualization Operators on nodes labeled example.io/example-infra-key = example-infra-value.

Example Subscription object with tolerations rule:

apiVersion: operators.coreos.com/v1alpha1
kind: Subscription
metadata:
  name: hco-operatorhub
  namespace: openshift-cnv
spec:
  source:  redhat-operators
  sourceNamespace: openshift-marketplace
  name: kubevirt-hyperconverged
  startingCSV: kubevirt-hyperconverged-operator.v4.21.8
  channel: "stable"
  config:
    tolerations:
    - key: "key"
      operator: "Equal"
      value: "virtualization"
      effect: "NoSchedule"

OLM deploys OpenShift Virtualization Operators on nodes labeled key = virtualization:NoSchedule taint. Only pods with the matching tolerations are scheduled on these nodes.