code: func (az *Cloud) ShouldNodeExcludedFromLoadBalancer(node *v1.Node) bool {
  	labels := node.ObjectMeta.Labels
  	if rg, ok := labels[externalResourceGroupLabel]; ok && !strings.EqualFold(rg, az.ResourceGroup) {
  		return true
  	}
  
  	if managed, ok := labels[managedByAzureLabel]; ok && managed == "false" {
  		return true
  	}
  
  	return false
  }
docs: // ShouldNodeExcludedFromLoadBalancer returns true if node is unmanaged or in external resource group.