novaデータベースのquota_usagesテーブルのin_useを-1にして インスタンスの起動／削除で更新される。 （floating_ipsはFloating IPの割り当て／解除で更新） I noticed the count was wrong in the nova table in database. The fix that helped was that I…

update instances set task_state = NULL, vm_state = 'stopped', power_state = 4 where deleted = 0 and uuid = '(uuid)'; power_state = 4 電源状態 シャットダウン済https://blog.dachary.org/2014/05/02/reseting-an-instance-powervmtask_state-in-hav…