diff --git a/fuelclient/commands/node.py b/fuelclient/commands/node.py
index 28aec0fe..154992ca 100644
--- a/fuelclient/commands/node.py
+++ b/fuelclient/commands/node.py
@@ -192,17 +192,23 @@ class NodeLabelSet(NodeMixIn, base.BaseCommand):
             nargs='+',
             help='List of labels for create or update')
 
-        parser.add_argument(
+        group = parser.add_mutually_exclusive_group(required=True)
+        group.add_argument(
             '-n',
             '--nodes',
             nargs='+',
             help='Create or update labels only for specific nodes')
+        group.add_argument(
+            '--nodes-all',
+            action='store_true',
+            help='Create or update labels for all nodes')
 
         return parser
 
     def take_action(self, parsed_args):
+        nodes_ids = None if parsed_args.nodes_all else parsed_args.nodes
         data = self.client.set_labels_for_nodes(
-            labels=parsed_args.labels, node_ids=parsed_args.nodes)
+            labels=parsed_args.labels, node_ids=nodes_ids)
         msg = "Labels have been updated on nodes: {0} \n".format(
             ','.join(data))
         self.app.stdout.write(msg)
@@ -219,17 +225,23 @@ class NodeLabelDelete(NodeMixIn, base.BaseCommand):
             nargs='+',
             help='List of labels keys for delete')
 
-        parser.add_argument(
+        group = parser.add_mutually_exclusive_group(required=True)
+        group.add_argument(
             '-n',
             '--nodes',
             nargs='+',
             help='Delete labels only for specific nodes')
+        group.add_argument(
+            '--nodes-all',
+            action='store_true',
+            help='Create or update labels for all nodes')
 
         return parser
 
     def take_action(self, parsed_args):
+        nodes_ids = None if parsed_args.nodes_all else parsed_args.nodes
         data = self.client.delete_labels_for_nodes(
-            labels_keys=parsed_args.labels_keys, node_ids=parsed_args.nodes)
+            labels_keys=parsed_args.labels_keys, node_ids=nodes_ids)
         msg = "Labels have been deleted on nodes: {0} \n".format(
             ','.join(data))
         self.app.stdout.write(msg)
diff --git a/fuelclient/tests/v2/unit/cli/test_node.py b/fuelclient/tests/v2/unit/cli/test_node.py
index d0f900b9..25ef4f83 100644
--- a/fuelclient/tests/v2/unit/cli/test_node.py
+++ b/fuelclient/tests/v2/unit/cli/test_node.py
@@ -146,7 +146,7 @@ class TestNodeCommand(test_engine.BaseCLITest):
 
     def test_node_label_set_for_all_nodes(self):
         labels = ['key_1=val_1', 'key_2=val_2']
-        args = 'node label set {labels}'.format(
+        args = 'node label set {labels} --nodes-all'.format(
             labels=' '.join(labels))
 
         self.exec_command(args)
@@ -169,7 +169,7 @@ class TestNodeCommand(test_engine.BaseCLITest):
 
     def test_node_label_delete_for_all_nodes(self):
         labels_keys = ['key_1', 'key_2']
-        args = 'node label delete {labels_keys}'.format(
+        args = 'node label delete {labels_keys} --nodes-all'.format(
             labels_keys=' '.join(labels_keys))
 
         self.exec_command(args)