Add release note for OVN
Change-Id: I4f2556e3fe91d4236a12bd1075a0d07bcd54f158
This commit is contained in:
Frode Nordahl
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b1bd5cf948
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ae0dca9498
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@ -48,6 +48,7 @@ Supported charms
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* mysql-innodb-cluster
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* mysql-router
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* neutron-api
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* neutron-api-plugin-ovn
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* neutron-openvswitch
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* neutron-gateway
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* neutron-dynamic-routing
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@ -57,6 +58,9 @@ Supported charms
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* octavia-dashboard
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* octavia-diskimage-retrofit
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* openstack-dashboard
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* ovn-central
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* ovn-chassis
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* ovn-dedicated-chassis
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* pacemaker-remote
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* percona-cluster
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* placement
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@ -73,10 +77,6 @@ Preview charms
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* cinder-backup
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* keystone-saml-mellon
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* manila-generic
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* neutron-api-plugin-ovn
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* ovn-central
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* ovn-chassis
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* ovn-dedicated-chassis
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* tempest
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* trilio-data-mover
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* trilio-dm-api
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@ -178,12 +178,65 @@ This PPA can be mirrored for offline deployments - the neutron-openvswitch
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charm may be configured to use a mirror for these packages using the
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'networking-tools-source' configuration option.
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OVN charms feature parity with OVS charms
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The OVN charms have been brought up to feature parity with the OVS charms and
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the ovn-chassis charm can now configure DPDK, SR-IOV and hardware offload
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support.
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.. note::
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There are feature `gaps from ML2/OVS`_ and deploying legacy ML2/OVS with
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the OpenStack Charms is still available if you require any of the missing
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features.
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.. warning::
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Support for hardware offload in conjunction with OVN is an experimental
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feature. OVN programs flow tables in a different way than legacy
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ML2+OVS and this has had less exposure to validation in NIC firmware and
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driver support.
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Documentation on and automation for migrating existing clouds to OVN will be
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delivered as part of the 20.10 OpenStack Charms release.
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NEW CHARM FEATURE GOES HERE
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Change of default behaviour for Neutron API
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The neutron-api charm has a change in default behaviour when deploying
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OpenStack Ussuri (or newer). The value of configuration option
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``manage-neutron-plugin-legacy-mode`` has changed from 'True' to 'False'.
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When 'True' the network management plugin is chosen via the ``neutron-plugin``
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configuration option. When 'False' plugin is chosen through the deployment of a
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subordinate charm and relating it to the neutron-api application.
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The most prominent effect of the change is that you will need to set up a
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subordinate plugin charm (and possibly associated charms) to get a functional
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network service. Sample bundles will be updated to enable OVN by default. See
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`Open Virtual Network (OVN)`_ in the `OpenStack Charms Deployment Guide`_ for
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details on OVN.
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This is made within the following upstream context:
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- During the Ussuri cycle the upstream Neutron project has promoted the ML2+OVN
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to an in-tree driver and moving forward it will be the default reference
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implementation, replacing the traditional ML2+OVS and ML2+OVS+DVR
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implementations. See the `Toward Convergence of ML2+OVS+DVR and OVN`_ Neutron
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specification for more information.
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- The desire for a more sensible default mode of operation enabling easier
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integration with the rich plugin ecosystem available for OpenStack Neutron.
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Upgrading neutron-api or upgrading OpenStack will not trigger the new
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behaviour.
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Swift global cluster
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~~~~~~~~~~~~~~~~~~~~
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@ -307,6 +360,13 @@ Charm support for FWaaS will be retained for enabled OpenStack releases and
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configuration options will have no effect when deployed with the W release and
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onwards.
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.. note::
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A side effect of the FWaaS deprecation is that no new development has
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occurred upstream in a while. Subsequently there exists no support for FWaaS
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for use with OVN. Depending on your requirements instance security groups
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may be used instead.
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Removed features
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----------------
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@ -422,3 +482,4 @@ Please see the `OpenStack Charm Guide`_ for current information.
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.. _LP #1790904: https://bugs.launchpad.net/simplestreams/+bug/1790904
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.. _LP #1826382: https://bugs.launchpad.net/nova/+bug/1826382
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.. _LP #1839019: https://bugs.launchpad.net/charm-designate/+bug/1839019
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.. _gaps from ML2/OVS: https://docs.openstack.org/neutron/ussuri/ovn/gaps.html
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