* The ability to disable in tree API extensions has been deprecated (https://blueprints.launchpad.net/nova/+spec/nova-api-deprecate-extensions) * The novaclient.v1_1 module has been deprecated [[https://git.openstack.org/cgit/openstack/python-novaclient/commit/?id=61ef35fe79e2a3a76987a92f9ee2db0bf1f6e651]][[https://git.openstack.org/cgit/openstack/python-novaclient/commit/?id=0a60aae852d2688861d0b4ba097a1a00529f0611]] since 2.21.0 and we are going to remove it in the first python-novaclient release in Mitaka. * Method `novaclient.client.get_client_class` is deprecated [[https://git.openstack.org/cgit/openstack/python-novaclient/commit/?id=147a1a6ee421f9a45a562f013e233d29d43258e4]] since 2.29.0. The method will be removed in Mitaka. * The ''mute_weight_value'' option on weighers has been deprecated, including for use with Cells. * The ''remove_unused_kernels'' configuration option for the Libvirt driver is now deprecated. * The minimum recommended version of vCenter for use with the ''vcenter'' driver is now 5.1.0. In Liberty this is logged as a warning, in Mitaka support for versions lower than 5.1.0 will be removed. * API v3 specific components have all been deprecated and removed from the default paste.ini