diff --git a/defaults/main.yml b/defaults/main.yml
index 1092575e..6a6a28aa 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -16,6 +16,9 @@
 # Defines that the role will be deployed on a host machine
 is_metal: true
 
+# Enable/Disable ceilometer configurations
+nova_ceilometer_enabled: False
+
 ## Verbosity Options
 debug: False
 verbose: True
diff --git a/templates/nova.conf.j2 b/templates/nova.conf.j2
index e3d8b5d9..8ac145e4 100644
--- a/templates/nova.conf.j2
+++ b/templates/nova.conf.j2
@@ -100,6 +100,14 @@ max_age = {{ nova_max_age }}
 # Common
 memcached_servers = {{ memcached_servers }}
 
+# Ceilometer notification configurations
+{% if nova_ceilometer_enabled %}
+instance_usage_audit = True
+instance_usage_audit_period = hour
+notify_on_state_change = vm_and_task_state
+notification_driver = messagingv2
+{% endif %}
+
 # Cinder
 [cinder]
 catalog_info = volume:cinder:internalURL
</div><div class="naked_ctrl">
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<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://opendev.org/openstack/openstack-ansible-os_nova/commit/f70f0434a099bdbff402e86d19a2d4223367b143.diff">(-&gt;オリジナル)</a>
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</select>
<input type="submit" value="表示" />
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