Open Stack

We are satisfied to announce the release of:

neutron 20.3.1: OpenStack Networking

This release is part of the yoga stable release series.

The source is available from:

    https://opendev.org/openstack/neutron

Download the package from:

    https://tarballs.openstack.org/neutron/

Please report issues through:

    https://bugs.launchpad.net/neutron/+bugs

For more details, please see below.

20.3.1
^^^^^^


Known Issues
************

* The high availability of metadata service on isolated networks is
  limited or non-existent. IPv4 metadata is redundant when the DHCP
  agent managing it is redundant, but recovery is tied to the renewal
  of the DHCP lease, making most recoveries very slow. IPv6 metadata
  is not redundant at all as the IPv6 metadata address can only be
  configured in a single place at a time as it is link-local. Multiple
  agents trying to configure it will generate an IPv6 duplicate
  address detection failure.

  Administrators may observe the IPv6 metadata address in "dadfailed"
  state in the DHCP namespace for this reason, which is only an
  indication it is not highly available. Until a redesign is made to
  the isolated metadata service there is not a better deployment
  option. See bug 1953165
  (https://bugs.launchpad.net/neutron/+bug/1953165) for information.

* The *redirect-type=bridged* option is only used if all the tenant
  networks connected to the router are of type VLAN or FLAT. In this
  case their traffic will be distributed. However, if there is a mix
  of VLAN/FLAT and geneve networks connected to the same router, the
  redirect-type option is not set, and therefore the traffic for the
  VLAN/FLAT networks will also be centralized but not tunneled.


Bug Fixes
*********

* 1986003 (https://bugs.launchpad.net/neutron/+bug/1986003) Fixed an
  issue with concurrent requests to activate the same port binding
  where one of the requests returned a 500 Internal Server Error. With
  the fix one request will return successfully and the other will
  return a 409 Conflict (Binding already active). This fixes errors in
  nova live-migrations where those concurrent requests might be sent.
  Nova handles the 409/Conflict response gracefully.

* Fix an issue in the OVN driver where network metadata could become
  unavailable if the metadata port was ever deleted, even if
  accidental. To re-create the port, a user can now disable, then
  enable, DHCP for one of the subnets associated with the network
  using the Neutron API. This will try and create the port, similar to
  what happens in the DHCP agent for ML2/OVS. For more information,
  see bug 2015377
  (https://bugs.launchpad.net/ubuntu/+source/neutron/+bug/2015377).

* [bug 2003455 (https://bugs.launchpad.net/neutron/+bug/2003455)] As
  part of a previous commit
  (https://review.opendev.org/c/openstack/neutron/+/875644) the
  *redirect-type=bridged* option was set in all the router gateway
  ports (cr-lrp ovn ports). However this was breaking the N/S traffic
  for geneve tenant networks connected to the provider networks
  through those routers with the redirect-type option enabled. To fix
  this we ensure that the redirect-type option is only set if all the
  networks connected to the router are of VLAN or FLAT type, otherwise
  we fall back to the default option. This also means that if there is
  a mix of VLAN and geneve tenant networks connected to the same
  router, the VLAN traffic will be centralized (but not tunneled). If
  the traffic for the VLAN/FLAT needs to be distributed, then it
  should use a different router.

Changes in neutron 20.3.0..20.3.1
---------------------------------

b37a2f80ee Start metadata proxy even if IPv6 DAD fails
1a66962ee3 Change RBAC relationship loading method to "joined"
8d30f9223a Revert "Delete sg rule which remote is the deleted sg"
bbbafe1681 [ovn] Avoid unwanted ACL_NOT_FOUND error when deleting log objects
508d8328aa Use explicit inner join for networks in port query
99b712b397 [stable-only][ovn] Fix ovsdbapp db_set command for stable branches
f1db48afc1 Fix not working use_random_fully config option
46aefebd5d [OVN] Update ovn meter when neutron server reloads
c3c056950d Delete sg rule which remote is the deleted sg
defb6018f3 Suppress IPv6 metadata DAD failure and delete address
995c465539 Avoid retrieving ports if network list is empty
c3fb31b574 Replace context decorators with context managers
9e088512b4 Honor debug mode in keepalived-state-change script logs
b3dc3ffa63 Change flag check order in wait_until_address_ready()
47b9511ec5 OVN: Always try and create a metadata port on subnets
c246913b2f Ensure redirect-type=bridged not used for geneve networks
347486fb51 Fix concurrent port binding activate
85321a61d3 Revert "Ensure vlan network traffic is not centralized"
9150206a07 [OVN] Explicitly define the fixed IPs for the metadata port
fec0286e26 Fix default value for MTUs, when not provided
8c7f3b61f7 [OVS] Allow custom ethertype traffic in the ingress table
833260b04d Delete the PB level registers when deleting the duplicated PB
0152a6087f Only create a frozen  Row on matching events
f83a97dea2 Ensure vlan network traffic is not centralized
4529b5b230 Rename setup-mtu-t1 argument because it is misleading


Diffstat (except docs and test files)
-------------------------------------

neutron/agent/l3/keepalived_state_change.py        |   1 -
neutron/agent/linux/dhcp.py                        |   3 +-
neutron/agent/linux/ip_lib.py                      |  19 ++-
neutron/agent/linux/iptables_manager.py            |   7 +-
.../agent/linux/openvswitch_firewall/firewall.py   |  19 +++
neutron/agent/metadata/driver.py                   |  41 ++++-
neutron/cmd/remove_duplicated_port_bindings.py     |  15 +-
neutron/common/_constants.py                       |   3 +
neutron/common/ovn/constants.py                    |   2 +
neutron/conf/agent/database/agentschedulers_db.py  |   4 +-
neutron/db/db_base_plugin_v2.py                    |  13 +-
neutron/db/models/address_group.py                 |   2 +-
neutron/db/models/address_scope.py                 |   2 +-
neutron/db/models/securitygroup.py                 |   2 +-
neutron/db/models_v2.py                            |   6 +-
neutron/db/qos/models.py                           |   2 +-
neutron/objects/db/api.py                          |  17 +-
neutron/objects/ports.py                           |  16 +-
.../ml2/drivers/ovn/mech_driver/ovsdb/commands.py  |  34 ++++
.../drivers/ovn/mech_driver/ovsdb/impl_idl_ovn.py  |   8 +
.../drivers/ovn/mech_driver/ovsdb/maintenance.py   |  86 +++++++++-
.../drivers/ovn/mech_driver/ovsdb/ovn_client.py    | 185 +++++++++++++++++----
.../drivers/ovn/mech_driver/ovsdb/ovn_db_sync.py   |   2 +-
.../drivers/ovn/mech_driver/ovsdb/ovsdb_monitor.py |   3 +-
neutron/plugins/ml2/plugin.py                      |   8 +
neutron/services/logapi/drivers/ovn/driver.py      |  54 +-----
neutron/services/qos/qos_plugin.py                 |   4 +-
.../agent/l3/test_keepalived_state_change.py       |   4 +-
.../ovn/mech_driver/ovsdb/test_maintenance.py      |  40 +++++
.../ovn/mech_driver/ovsdb/test_ovn_client.py       |  68 ++++++++
.../drivers/ovn/mech_driver/test_mech_driver.py    |  44 ++++-
.../linux/openvswitch_firewall/test_firewall.py    |  22 +++
.../unit/agent/linux/test_iptables_manager.py      |  34 ++++
.../ovn/mech_driver/ovsdb/test_maintenance.py      |  69 +++++++-
.../ovn/mech_driver/ovsdb/test_ovn_client.py       |  61 +++++++
.../drivers/ovn/mech_driver/test_mech_driver.py    |  65 ++++++--
.../services/logapi/drivers/ovn/test_driver.py     |  75 ++-------
.../notes/bug-1953165-6e848ea2c0398f56.yaml        |  16 ++
.../notes/bug-1986003-9bf5ca04f9304336.yaml        |  10 ++
...vn-recreate-metadata-port-76e2c0e651267aa0.yaml |  11 ++
.../notes/redirect-type-f29e89ca97357fe9.yaml      |  24 +++
.../infrared/tripleo-ovn-migration/main.yml        |   4 +-
.../tripleo_environment/ovn_migration.sh           |  14 +-
58 files changed, 1095 insertions(+), 229 deletions(-)