diff --git a/example.conf b/example.conf
index d2f4e9a12..946e5f1b1 100644
--- a/example.conf
+++ b/example.conf
@@ -222,38 +222,6 @@
 #allow_headers = X-Auth-Token,X-OpenStack-Ironic-Inspector-API-Minimum-Version,X-OpenStack-Ironic-Inspector-API-Maximum-Version,X-OpenStack-Ironic-Inspector-API-Version
 
 
-[cors.subdomain]
-
-#
-# From oslo.middleware.cors
-#
-
-# Indicate whether this resource may be shared with the domain
-# received in the requests "origin" header. Format:
-# "<protocol>://<host>[:<port>]", no trailing slash. Example:
-# https://horizon.example.com (list value)
-#allowed_origin = <None>
-
-# Indicate that the actual request can include user credentials
-# (boolean value)
-#allow_credentials = true
-
-# Indicate which headers are safe to expose to the API. Defaults to
-# HTTP Simple Headers. (list value)
-#expose_headers =
-
-# Maximum cache age of CORS preflight requests. (integer value)
-#max_age = 3600
-
-# Indicate which methods can be used during the actual request. (list
-# value)
-#allow_methods = GET,POST,PUT,HEAD,PATCH,DELETE,OPTIONS
-
-# Indicate which header field names may be used during the actual
-# request. (list value)
-#allow_headers = X-Auth-Token,X-OpenStack-Ironic-Inspector-API-Minimum-Version,X-OpenStack-Ironic-Inspector-API-Maximum-Version,X-OpenStack-Ironic-Inspector-API-Version
-
-
 [database]
 
 #
@@ -284,6 +252,10 @@
 # Example: mysql_sql_mode= (string value)
 #mysql_sql_mode = TRADITIONAL
 
+# If True, transparently enables support for handling MySQL Cluster
+# (NDB). (boolean value)
+#mysql_enable_ndb = false
+
 # Timeout before idle SQL connections are reaped. (integer value)
 # Deprecated group/name - [DEFAULT]/sql_idle_timeout
 # Deprecated group/name - [DATABASE]/sql_idle_timeout
@@ -517,11 +489,11 @@
 # Complete "public" Identity API endpoint. This endpoint should not be
 # an "admin" endpoint, as it should be accessible by all end users.
 # Unauthenticated clients are redirected to this endpoint to
-# authenticate. Although this endpoint should  ideally be unversioned,
-# client support in the wild varies.  If you're using a versioned v2
-# endpoint here, then this  should *not* be the same endpoint the
-# service user utilizes  for validating tokens, because normal end
-# users may not be  able to reach that endpoint. (string value)
+# authenticate. Although this endpoint should ideally be unversioned,
+# client support in the wild varies. If you're using a versioned v2
+# endpoint here, then this should *not* be the same endpoint the
+# service user utilizes for validating tokens, because normal end
+# users may not be able to reach that endpoint. (string value)
 #auth_uri = <None>
 
 # API version of the admin Identity API endpoint. (string value)