[release-1.28] report vmPowerStateUnknown when vmssVM intanceView is nil

pkg/provider/azure.go

@@ -1357,7 +1357,7 @@ func (az *Cloud) updateNodeTaint(node *v1.Node) {
 				klog.Errorf("failed to add taint %s to the node %s", v1.TaintNodeOutOfService, node.Name)
 			}
 		} else {
-			klog.V(2).Infof("node %s is not ready but node shutdown taint is not added, skip adding node out-of-service taint", node.Name)
+			klog.V(2).Infof("node %s is not ready but either shutdown taint is missing or out-of-service taint is already added, skip adding node out-of-service taint", node.Name)
 		}
 	}
 }

pkg/provider/azure_instances.go

@@ -37,6 +37,7 @@ const (
 	vmPowerStateStopped      = "stopped"
 	vmPowerStateDeallocated  = "deallocated"
 	vmPowerStateDeallocating = "deallocating"
+	vmPowerStateUnknown      = "unknown"
 
 	// nodeNameEnvironmentName is the environment variable name for getting node name.
 	// It is only used for out-of-tree cloud provider.

pkg/provider/azure_standard.go

@@ -515,8 +515,8 @@ func (as *availabilitySet) GetPowerStatusByNodeName(name string) (powerState str
 	}
 
 	// vm.InstanceView or vm.InstanceView.Statuses are nil when the VM is under deleting.
-	klog.V(3).Infof("InstanceView for node %q is nil, assuming it's stopped", name)
-	return vmPowerStateStopped, nil
+	klog.V(3).Infof("InstanceView for node %q is nil, assuming it's deleting", name)
+	return vmPowerStateUnknown, nil
 }
 
 // GetProvisioningStateByNodeName returns the provisioningState for the specified node.

pkg/provider/azure_standard_test.go

@@ -1042,18 +1042,18 @@ func TestGetStandardVMPowerStatusByNodeName(t *testing.T) {
 			expectedStatus: "Running",
 		},
 		{
-			name:     "GetPowerStatusByNodeName should get vmPowerStateStopped if vm.InstanceView is nil",
+			name:     "GetPowerStatusByNodeName should get vmPowerStateUnknown if vm.InstanceView is nil",
 			nodeName: "vm3",
 			vm: compute.VirtualMachine{
 				Name: pointer.String("vm3"),
 				VirtualMachineProperties: &compute.VirtualMachineProperties{
 					ProvisioningState: pointer.String("Succeeded"),
 				},
 			},
-			expectedStatus: vmPowerStateStopped,
+			expectedStatus: vmPowerStateUnknown,
 		},
 		{
-			name:     "GetPowerStatusByNodeName should get vmPowerStateStopped if vm.InstanceView.statuses is nil",
+			name:     "GetPowerStatusByNodeName should get vmPowerStateUnknown if vm.InstanceView.statuses is nil",
 			nodeName: "vm4",
 			vm: compute.VirtualMachine{
 				Name: pointer.String("vm4"),
@@ -1062,7 +1062,7 @@ func TestGetStandardVMPowerStatusByNodeName(t *testing.T) {
 					InstanceView:      &compute.VirtualMachineInstanceView{},
 				},
 			},
-			expectedStatus: vmPowerStateStopped,
+			expectedStatus: vmPowerStateUnknown,
 		},
 	}
 	for _, test := range testcases {

pkg/provider/azure_vmss.go

@@ -293,8 +293,8 @@ func (ss *ScaleSet) GetPowerStatusByNodeName(name string) (powerState string, er
 	}
 
 	// vm.InstanceView or vm.InstanceView.Statuses are nil when the VM is under deleting.
-	klog.V(3).Infof("InstanceView for node %q is nil, assuming it's stopped", name)
-	return vmPowerStateStopped, nil
+	klog.V(3).Infof("InstanceView for node %q is nil, assuming it's deleting", name)
+	return vmPowerStateUnknown, nil
 }
 
 // GetProvisioningStateByNodeName returns the provisioningState for the specified node.

pkg/provider/azure_vmss_test.go

@@ -787,10 +787,10 @@ func TestGetPowerStatusByNodeName(t *testing.T) {
 			expectedPowerState: "Running",
 		},
 		{
-			description:        "GetPowerStatusByNodeName should return vmPowerStateStopped when the vm.InstanceView.Statuses is nil",
+			description:        "GetPowerStatusByNodeName should return vmPowerStateUnknown when the vm.InstanceView.Statuses is nil",
 			vmList:             []string{"vmss-vm-000001"},
 			nilStatus:          true,
-			expectedPowerState: vmPowerStateStopped,
+			expectedPowerState: vmPowerStateUnknown,
 		},
 	}
 

pkg/provider/azure_vmssflex.go

@@ -279,8 +279,8 @@ func (fs *FlexScaleSet) GetPowerStatusByNodeName(name string) (powerState string
 	}
 
 	// vm.InstanceView or vm.InstanceView.Statuses are nil when the VM is under deleting.
-	klog.V(3).Infof("InstanceView for node %q is nil, assuming it's stopped", name)
-	return vmPowerStateStopped, nil
+	klog.V(3).Infof("InstanceView for node %q is nil, assuming it's deleting", name)
+	return vmPowerStateUnknown, nil
 }
 
 // GetPrimaryInterface gets machine primary network interface by node name.

pkg/provider/azure_vmssflex_test.go

@@ -551,12 +551,12 @@ func TestGetPowerStatusByNodeNameVmssFlex(t *testing.T) {
 			expectedErr:                    cloudprovider.InstanceNotFound,
 		},
 		{
-			description:                    "GetPowerStatusByNodeName should return stopped if the node powerstate is nil",
+			description:                    "GetPowerStatusByNodeName should return unknown if the node powerstate is nil",
 			nodeName:                       "vmssflex1000003",
 			testVMListWithoutInstanceView:  testVMListWithoutInstanceView,
 			testVMListWithOnlyInstanceView: testVMListWithOnlyInstanceView,
 			vmListErr:                      nil,
-			expectedPowerStatus:            "stopped",
+			expectedPowerStatus:            "unknown",
 			expectedErr:                    nil,
 		},
 	}