The changes are published on the Customer Portal: https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/13/html-single/keeping_red_hat_openstack_platform_updated/index#updating_all_controller_nodes https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/13/html-single/keeping_red_hat_openstack_platform_updated/index#known_issues_that_might_block_an_update Thank you