tripleo-heat-templates/releasenotes/notes/neutron-az-config-service-3...

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---
features:
- |
Neutron can be configured for using avaialabiity zones (AZs).
.. note:: OVN does not normally run Neutron agents and also has yet support
for AZ-aware routing scheduling. Therefore, no effective AZ configurations
can be applied for the network services for the
``NeutronMechanismDrivers: ovn`` case.
`NeutronDefaultAvailabilityZones`, `NeutronDhcpAgentAvailabilityZone`,
`NeutronL3AgentAvailabilityZone`, `NeutronDhcpAgentsPerNetwork`,
`NeutronNetworkSchedulerDriver`, `NeutronRouterSchedulerDriver` and
`NeutronDhcpLoadType` can be used to configure various AZ configurations.
By default, `Neutron*AvailabilityZone(s)` takes an empty value, which
defines no AZs associated with the associated Neutron network service.
.. note:: The empty AZ name cannot be re-defined via
`Neutron*AvailabilityZone(s)` because of the empty value has been
reserved for another purposes in t-h-t.
For details, see
`Official Documentaion <https://docs.openstack.org/neutron/latest/admin/config-az.html>`_.