Upgrade Notes

This section describes changes which might impact upgrades from the previous releases.

From Liberty to Mitaka

  • Neutron MidoNet interface driver has been moved out of Neutron tree. If your deployment uses Neutron DHCP agent and its configuration doesn’t use the stevedore alias (“midonet”), you should update it:

    Before:

    interface_driver = neutron.agent.linux.interface.MidonetInterfaceDriver

    After:

    interface_driver = midonet

  • The following sub-commands were removed from midonet-db-manage command:

    current             Display the current revision for a database.
history             List changeset scripts in chronological order.
branches            Show current branch points
check_migration     Show current branch points and validate head file
upgrade             Upgrade to a later version.
downgrade           (No longer supported)
stamp               'stamp' the revision table with the given revision;
revision            Create a new revision file.

    You can use neutron-db-manage –subproject networking-midonet instead.

    For example,:

    $ neutron-db-manage --subproject networking-midonet upgrade head

  • At the start of the Mitaka development cycle (immediately after “liberty” db milestone), our sub-project db migration chain was separated into two branches, “expand” and “contract”, to allow a shorter downtime as Neutron does. See the blueprint [1] for details.

[1]http://specs.openstack.org/openstack/neutron-specs/specs/liberty/online-schema-migrations.html

From Kilo to Liberty

  • v2 plugin was separated into two plugins, core plugin and L3 service plugin. You need to configure L3 service plugin in addition to the core plugin:

    core_plugin = midonet.neutron.plugin_v2.MidonetPluginV2
service_plugins = midonet.neutron.services.l3.l3_midonet.MidonetL3ServicePlugin

  • Plugin entry point for v1 plugin (the older plugin which is compatible with MidoNet v2015.03 and v2015.06) has been moved out of Neutron tree:

    Before:

    core_plugin = neutron.plugins.midonet.plugin.MidonetPluginV2

    After:

    core_plugin = midonet.neutron.plugin_v1.MidonetPluginV2

  • midonet-db-manage command is now obsolete. While it’s still provided for backward compatibility, we plan to remove it in a feature release. You can use neutron-db-manage –subproject networking-midonet instead.

    For example,:

    $ neutron-db-manage --subproject networking-midonet upgrade head

From Juno to Kilo

  • A separate plugin (“v2 plugin”) which is compatible with MidoNet v5.0 (previously called v2015.09) was introduced:

    core_plugin = midonet.neutron.plugin_v2.MidonetPluginV2