When a pay-as-you-go instance is not configured with a listener or bound to a real server seven days after the creation, it’s considered as an idle instance. To reduce unnecessary charges, please release idle instances in time.
The feature is currently in beta test. To try it out, please submit a ticket.
CLB supports batch release of idle instances in the same region only.
The idle instance data can be cached for one day. Make sure that the instance to be released is not in use to prevent a release error.