diff --git a/tcp_tests/managers/envmanager_devops.py b/tcp_tests/managers/envmanager_devops.py
index d02cff5..0e56756 100644
--- a/tcp_tests/managers/envmanager_devops.py
+++ b/tcp_tests/managers/envmanager_devops.py
@@ -420,6 +420,22 @@
                          timeout_msg=('Node {0} failed '
                                       'to become active'.format(node)))
 
+    def warm_shutdown_nodes(self, underlay, nodes_prefix, timeout=600):
+        node_names = underlay.get_target_node_names(nodes_prefix)
+        for node in node_names:
+            LOG.debug('Shutdown node {0}'.format(node))
+            underlay.check_call(cmd="shutdown +1", node_name=node)
+        for node in node_names:
+            self.wait_for_node_state(node, state='offline', timeout=timeout)
+
+    def warm_restart_nodes(self, underlay, nodes_prefix, timeout=600):
+        self.warm_shutdown_nodes(underlay, nodes_prefix, timeout)
+        node_names = underlay.get_target_node_names(nodes_prefix)
+        for node in node_names:
+            LOG.debug('Starting node {0}'.format(node))
+            self.start_node(node)
+            self.wait_for_node_state(node, state='active', timeout=timeout)
+
     def has_snapshot(self, name):
         return self.__env.has_snapshot(name)