anchor.diff:  +
   ----
   $ oc label nodes ip-10-0-142-25.ec2.internal type=user-node region=east
  -----
  -+
  -To label a MachineSet:
  -+
  -----
  -$ oc label MachineSet abc612-msrtw-worker-us-east-1c type=user-node region=east
   ----
   +
   The label is applied to the node:
  
positive.code: ----
  
  The web console lists the controlling object under `ownerReferences` in the pod YAML:
  +
  ----
    ownerReferences:
      - apiVersion: apps/v1
  
negative.code:     type: user-node <1>
  ....
  ----
  <1> Specify the label(s) you will add to the node.
  +
  Alternatively, you can add the label to a MachineSet:
  +
  ----
  $ oc edit MachineSet abc612-msrtw-worker-us-east-1c
  ----
  +
  [source,yaml]
  +
  ----
  apiVersion: machine.openshift.io/v1beta1
  kind: MachineSet
  
  ....
  
  spec:
    replicas: 2
    selector:
      matchLabels:
        machine.openshift.io/cluster-api-cluster: ci-ln-89dz2y2-d5d6b-4995x
        machine.openshift.io/cluster-api-machine-role: worker
        machine.openshift.io/cluster-api-machine-type: worker
        machine.openshift.io/cluster-api-machineset: ci-ln-89dz2y2-d5d6b-4995x-worker-us-east-1a
    template:
      metadata:
        creationTimestamp: null
        labels:
          machine.openshift.io/cluster-api-cluster: ci-ln-89dz2y2-d5d6b-4995x
          machine.openshift.io/cluster-api-machine-role: worker
          machine.openshift.io/cluster-api-machine-type: worker
          machine.openshift.io/cluster-api-machineset: ci-ln-89dz2y2-d5d6b-4995x-worker-us-east-1a
      spec:
        metadata:
          creationTimestamp: null
          labels:
            region: east <1>
            type: user-node <1>
  ....
  ----
  <1> Specify the label(s) you will add to the node.
  
  . Add the desired node selector a pod:
  +
  