diff --git a/tempest/api/compute/servers/test_server_actions.py b/tempest/api/compute/servers/test_server_actions.py
index f3d7476..93bd817 100644
--- a/tempest/api/compute/servers/test_server_actions.py
+++ b/tempest/api/compute/servers/test_server_actions.py
@@ -288,6 +288,17 @@
         self.assertEqual('in-use', vol_after_rebuild['status'])
         self.assertEqual(self.server_id,
                          vol_after_rebuild['attachments'][0]['server_id'])
+        if CONF.validation.run_validation:
+            validation_resources = self.get_class_validation_resources(
+                self.os_primary)
+            linux_client = remote_client.RemoteClient(
+                self.get_server_ip(server, validation_resources),
+                self.ssh_user,
+                password=None,
+                pkey=validation_resources['keypair']['private_key'],
+                server=server,
+                servers_client=self.client)
+            linux_client.validate_authentication()
 
     def _test_resize_server_confirm(self, server_id, stop=False):
         # The server's RAM and disk space should be modified to that of
diff --git a/tempest/api/compute/volumes/test_attach_volume.py b/tempest/api/compute/volumes/test_attach_volume.py
index 8bb4eaa..f83e62c 100644
--- a/tempest/api/compute/volumes/test_attach_volume.py
+++ b/tempest/api/compute/volumes/test_attach_volume.py
@@ -126,7 +126,7 @@
     @decorators.idempotent_id('7fa563fe-f0f7-43eb-9e22-a1ece036b513')
     def test_list_get_volume_attachments(self):
         # List volume attachment of the server
-        server, _ = self._create_server()
+        server, validation_resources = self._create_server()
         volume_1st = self.create_volume()
         attachment_1st = self.attach_volume(server, volume_1st)
         body = self.servers_client.list_volume_attachments(
@@ -149,6 +149,16 @@
             server['id'])['volumeAttachments']
         self.assertEqual(2, len(body))
 
+        if CONF.validation.run_validation:
+            linux_client = remote_client.RemoteClient(
+                self.get_server_ip(server, validation_resources),
+                self.image_ssh_user,
+                self.image_ssh_password,
+                validation_resources['keypair']['private_key'],
+                server=server,
+                servers_client=self.servers_client)
+            linux_client.validate_authentication()
+
         for attachment in [attachment_1st, attachment_2nd]:
             body = self.servers_client.show_volume_attachment(
                 server['id'], attachment['id'])['volumeAttachment']