Merge pull request #20 from mgugino-upstream-stage/update-status-dns

Update instance internal-dns names

pkg/cloud/gcp/actuators/machine/reconciler.go

@@ -170,6 +170,19 @@ func (r *Reconciler) reconcileMachineWithCloudState(failedCondition *v1beta1.GCP
 		for _, config := range networkInterface.AccessConfigs {
 			nodeAddresses = append(nodeAddresses, v1.NodeAddress{Type: v1.NodeExternalIP, Address: config.NatIP})
 		}
+		// Since we don't know when the project was created, we must account for
+		// both types of internal-dns:
+		// https://cloud.google.com/compute/docs/internal-dns#instance-fully-qualified-domain-names
+		// [INSTANCE_NAME].[ZONE].c.[PROJECT_ID].internal (newer)
+		nodeAddresses = append(nodeAddresses, corev1.NodeAddress{
+			Type:    corev1.NodeInternalDNS,
+			Address: fmt.Sprintf("%s.%s.c.%s.internal", r.machine.Name, r.providerSpec.Zone, r.projectID),
+		})
+		// [INSTANCE_NAME].c.[PROJECT_ID].internal
+		nodeAddresses = append(nodeAddresses, corev1.NodeAddress{
+			Type:    "AltInternalDNS",
+			Address: fmt.Sprintf("%s.c.%s.internal", r.machine.Name, r.projectID),
+		})
 
 		r.machine.Spec.ProviderID = &r.providerID
 		r.machine.Status.Addresses = nodeAddresses