skip nic that are in failing state

pkg/cloudprovider/providers/azure/azure_standard.go

@@ -52,7 +52,8 @@ const (
 	InternalLoadBalancerNameSuffix = "-internal"
 
 	// nodeLabelRole specifies the role of a node
-	nodeLabelRole = "kubernetes.io/role"
+	nodeLabelRole  = "kubernetes.io/role"
+	nicFailedState = "Failed"
 
 	storageAccountNameMaxLength = 24
 )
@@ -619,6 +620,11 @@ func (as *availabilitySet) ensureHostInPool(serviceName string, nodeName types.N
 		return err
 	}
 
+	if nic.ProvisioningState != nil && *nic.ProvisioningState == nicFailedState {
+		glog.V(3).Infof("ensureHostInPool skips node %s because its primdary nic %s is in Failed state", nodeName, nic.Name)
+		return nil
+	}
+
 	var primaryIPConfig *network.InterfaceIPConfiguration
 	primaryIPConfig, err = getPrimaryIPConfig(nic)
 	if err != nil {