--- upgrade: - | Configuration options related to RPC topics were deprecated in the past releases and are now completely removed from nova. There was no need to let users choose the RPC topics for all services. There was little benefit from this and it made it really easy to break Nova by changing the value of topic options. The following options are removed: - ``compute_topic`` - ``console_topic`` - ``consoleauth_topic`` - ``scheduler_topic`` - ``network_topic``