Setting up internal DNS resolution with OVN

gistfile1.txt

The Networking service enables users to control the name assigned to ports by the internal DNS.
To enable this functionality when you have deployed the openstack using kolla-ansible, do the following to override the exsting configuration:

1.Edit the /etc/kolla/config/neutron.conf file and assign a value different to openstacklocal (its default value) to the dns_domain parameter in the [default] section. As an example:

```
[DEFAULT]
dns_domain = example.org.
```

2. Add dns to extension_drivers in the [ml2] section of /etc/kolla/config/neutron/ml2_conf.ini. The following is an example:

```

[ml2]
extension_drivers = port_security,dns
```
Now Re run the neutron service playbook too apply the configuration changes:
$ kolla-ansible -i /etc/kolla/multinode deploy --tags neutron

You should mention, that this deployment model is for OVN

WIth openvswitch network driver you have to provide DNS address as DHCP.