diff --git a/nova/objects/instance_action.py b/nova/objects/instance_action.py
index 1009383b5ec1..1c6d64eefd6b 100644
--- a/nova/objects/instance_action.py
+++ b/nova/objects/instance_action.py
@@ -13,6 +13,7 @@
 #    under the License.
 
 from oslo_utils import timeutils
+from oslo_utils import versionutils
 
 from nova import db
 from nova import objects
@@ -120,7 +121,8 @@ class InstanceActionEvent(base.NovaPersistentObject, base.NovaObject,
                           base.NovaObjectDictCompat):
     # Version 1.0: Initial version
     # Version 1.1: event_finish_with_failure decorated with serialize_args
-    VERSION = '1.1'
+    # Version 1.2: Add 'host' field
+    VERSION = '1.2'
     fields = {
         'id': fields.IntegerField(),
         'event': fields.StringField(nullable=True),
@@ -129,8 +131,14 @@ class InstanceActionEvent(base.NovaPersistentObject, base.NovaObject,
         'finish_time': fields.DateTimeField(nullable=True),
         'result': fields.StringField(nullable=True),
         'traceback': fields.StringField(nullable=True),
+        'host': fields.StringField(nullable=True),
         }
 
+    def obj_make_compatible(self, primitive, target_version):
+        target_version = versionutils.convert_version_to_tuple(target_version)
+        if target_version < (1, 2) and 'host' in primitive:
+            del primitive['host']
+
     @staticmethod
     def _from_db_object(context, event, db_event):
         for field in event.fields:
@@ -140,11 +148,13 @@ class InstanceActionEvent(base.NovaPersistentObject, base.NovaObject,
         return event
 
     @staticmethod
-    def pack_action_event_start(context, instance_uuid, event_name):
+    def pack_action_event_start(context, instance_uuid, event_name,
+                                host=None):
         values = {'event': event_name,
                   'instance_uuid': instance_uuid,
                   'request_id': context.request_id,
-                  'start_time': timeutils.utcnow()}
+                  'start_time': timeutils.utcnow(),
+                  'host': host}
         return values
 
     @staticmethod
@@ -168,9 +178,10 @@ class InstanceActionEvent(base.NovaPersistentObject, base.NovaObject,
         return cls._from_db_object(context, cls(), db_event)
 
     @base.remotable_classmethod
-    def event_start(cls, context, instance_uuid, event_name, want_result=True):
+    def event_start(cls, context, instance_uuid, event_name, want_result=True,
+                    host=None):
         values = cls.pack_action_event_start(context, instance_uuid,
-                                             event_name)
+                                             event_name, host=host)
         db_event = db.action_event_start(context, values)
         if want_result:
             return cls._from_db_object(context, cls(), db_event)
diff --git a/nova/tests/unit/api/openstack/compute/test_instance_actions.py b/nova/tests/unit/api/openstack/compute/test_instance_actions.py
index d15f58819c2d..861baeb682e0 100644
--- a/nova/tests/unit/api/openstack/compute/test_instance_actions.py
+++ b/nova/tests/unit/api/openstack/compute/test_instance_actions.py
@@ -53,12 +53,14 @@ def format_action(action, expect_traceback=True):
     return action
 
 
-def format_event(event, expect_traceback=True):
+def format_event(event, expect_traceback=True, expect_host=False):
     '''Remove keys that aren't serialized.'''
     to_delete = ['id', 'created_at', 'updated_at', 'deleted_at', 'deleted',
                  'action_id']
     if not expect_traceback:
         to_delete.append('traceback')
+    if not expect_host:
+        to_delete.append('host')
     for key in to_delete:
         if key in event:
             del(event[key])
diff --git a/nova/tests/unit/fake_server_actions.py b/nova/tests/unit/fake_server_actions.py
index d22f08cb7a1f..e3ddee228941 100644
--- a/nova/tests/unit/fake_server_actions.py
+++ b/nova/tests/unit/fake_server_actions.py
@@ -70,6 +70,7 @@ FAKE_EVENTS = {
                        'updated_at': None,
                        'deleted_at': None,
                        'deleted': False,
+                       'host': 'host1'
                       },
                       {'id': 2,
                        'action_id': FAKE_ACTION_ID1,
@@ -84,6 +85,7 @@ FAKE_EVENTS = {
                        'updated_at': None,
                        'deleted_at': None,
                        'deleted': False,
+                       'host': 'host1'
                        }
     ],
     FAKE_ACTION_ID2: [{'id': 3,
@@ -99,6 +101,7 @@ FAKE_EVENTS = {
                        'updated_at': None,
                        'deleted_at': None,
                        'deleted': False,
+                       'host': 'host2'
                        }
    ]
 }
diff --git a/nova/tests/unit/objects/test_instance_action.py b/nova/tests/unit/objects/test_instance_action.py
index d2ff70f3ddf8..59588450551b 100644
--- a/nova/tests/unit/objects/test_instance_action.py
+++ b/nova/tests/unit/objects/test_instance_action.py
@@ -54,6 +54,7 @@ fake_event = {
     'finish_time': None,
     'result': 'fake-result',
     'traceback': 'fake-tb',
+    'host': 'fake-host',
 }
 
 
diff --git a/nova/tests/unit/objects/test_objects.py b/nova/tests/unit/objects/test_objects.py
index f0fc5673abed..97c69e08f7be 100644
--- a/nova/tests/unit/objects/test_objects.py
+++ b/nova/tests/unit/objects/test_objects.py
@@ -1097,7 +1097,7 @@ object_data = {
     'ImageMetaProps': '1.20-ffd686cde289814695d5f89522aa5aef',
     'Instance': '2.4-4437eb8b2737c3054ea579b8efe31dc5',
     'InstanceAction': '1.1-f9f293e526b66fca0d05c3b3a2d13914',
-    'InstanceActionEvent': '1.1-e56a64fa4710e43ef7af2ad9d6028b33',
+    'InstanceActionEvent': '1.2-b2f368b8a29d8d872b1f6ea841e820a0',
     'InstanceActionEventList': '1.1-13d92fb953030cdbfee56481756e02be',
     'InstanceActionList': '1.1-a2b2fb6006b47c27076d3a1d48baa759',
     'InstanceDeviceMetadata': '1.0-74d78dd36aa32d26d2769a1b57caf186',