Allow for the power state interval to be configured.

The power state interval right now is hard coded to 600 seconds.
In order to allow deployers to change this timing (and determine)
the side-effects of that change it is useful to allow this value
to be configured instead of static.

DocImpact

Change-Id: I9baf34f9b132dc20fcc096f86fa0e5794fc06312

1 files changed, 6 insertions, 1 deletions

diff --git a/nova/compute/manager.py b/nova/compute/manager.py
index 687594ab9..5feabc060 100755
--- a/nova/compute/manager.py
+++ b/nova/compute/manager.py
@@ -110,6 +110,10 @@ interval_opts = [
     cfg.IntOpt('bandwidth_poll_interval',
                default=600,
                help='interval to pull bandwidth usage info'),
+    cfg.IntOpt('sync_power_state_interval',
+               default=600,
+               help='interval to sync power states between '
+                    'the database and the hypervisor'),
     cfg.IntOpt("heal_instance_info_cache_interval",
                default=60,
                help="Number of seconds between instance info_cache self "
@@ -3727,7 +3731,8 @@ class ComputeManager(manager.SchedulerDependentManager):
                 capability['host_ip'] = CONF.my_ip
             self.update_service_capabilities(capabilities)
 
-    @manager.periodic_task(spacing=600.0, run_immediately=True)
+    @manager.periodic_task(spacing=CONF.sync_power_state_interval,
+                           run_immediately=True)
     def _sync_power_states(self, context):
         """Align power states between the database and the hypervisor.