diff --git a/watcher/common/service.py b/watcher/common/service.py
index f2778c639..3528a47d5 100644
--- a/watcher/common/service.py
+++ b/watcher/common/service.py
@@ -289,7 +289,7 @@ class Service(service.ServiceBase):
         return api_manager_version
 
 
-def launch(conf, service_, workers=1, restart_method='reload'):
+def launch(conf, service_, workers=1, restart_method='mutate'):
     return service.launch(conf, service_, workers, restart_method)
 
 
diff --git a/watcher/conf/decision_engine.py b/watcher/conf/decision_engine.py
index f2ceb3a38..d284e1c48 100644
--- a/watcher/conf/decision_engine.py
+++ b/watcher/conf/decision_engine.py
@@ -44,18 +44,21 @@ WATCHER_DECISION_ENGINE_OPTS = [
                     'execute strategies'),
     cfg.IntOpt('action_plan_expiry',
                default=24,
+               mutable=True,
                help='An expiry timespan(hours). Watcher invalidates any '
                     'action plan for which its creation time '
                     '-whose number of hours has been offset by this value-'
                     ' is older that the current time.'),
     cfg.IntOpt('check_periodic_interval',
                default=30 * 60,
+               mutable=True,
                help='Interval (in seconds) for checking action plan expiry.')
 ]
 
 WATCHER_CONTINUOUS_OPTS = [
     cfg.IntOpt('continuous_audit_interval',
                default=10,
+               mutable=True,
                help='Interval (in seconds) for checking newly created '
                     'continuous audits.')
 ]
diff --git a/watcher/conf/gnocchi_client.py b/watcher/conf/gnocchi_client.py
index d4b438c57..885aaf1d9 100644
--- a/watcher/conf/gnocchi_client.py
+++ b/watcher/conf/gnocchi_client.py
@@ -32,9 +32,11 @@ GNOCCHI_CLIENT_OPTS = [
                     'The default is public.'),
     cfg.IntOpt('query_max_retries',
                default=10,
+               mutable=True,
                help='How many times Watcher is trying to query again'),
     cfg.IntOpt('query_timeout',
                default=1,
+               mutable=True,
                help='How many seconds Watcher should wait to do query again')]
 
 
diff --git a/watcher/conf/service.py b/watcher/conf/service.py
index 0f18d3a60..e0b24c4be 100644
--- a/watcher/conf/service.py
+++ b/watcher/conf/service.py
@@ -25,6 +25,7 @@ from watcher._i18n import _
 SERVICE_OPTS = [
     cfg.IntOpt('periodic_interval',
                default=60,
+               mutable=True,
                help=_('Seconds between running periodic tasks.')),
     cfg.HostAddressOpt('host',
                        default=socket.gethostname(),