Hi Alejandro,
you need to do:
$ neutron subnet-update fixed --dns_nameservers action=clear
Re, Darragh.
> Hi,
>
> After updating a quantum attribute, I'm looking for a way to "clear"
> the field dns_nameservers
>
> +------------------+-------------------------------------------------------+
> | Field | Value |
> +------------------+-------------------------------------------------------+
> | allocation_pools | {"start": "192.168.123.50", "end": "192.168.123.254"} |
> | cidr | 192.168.123.0/24 |
> | dns_nameservers | |
> | enable_dhcp | True |
> | gateway_ip | 192.168.123.49 |
> | host_routes | |
> | id | 336674e1-eded-4e5b-a87c-744281bab14b |
> | ip_version | 4 |
> | name | fixed |
> | network_id | f6dd957c-3079-499d-a6bb-b34e278b23a6 |
> | tenant_id | d765841b7e9b450a8d0d91f3b1189ded |
> +------------------+-------------------------------------------------------+
> :~ # neutron subnet-update fixed --dns_nameservers list=true 8.8.8.7 8.8.8.8
> Updated subnet: fixed
> :~ # neutron subnet-show fixed
> +------------------+-------------------------------------------------------+
> | Field | Value |
> +------------------+-------------------------------------------------------+
> | allocation_pools | {"start": "192.168.123.50", "end": "192.168.123.254"} |
> | cidr | 192.168.123.0/24 |
> | dns_nameservers | 8.8.8.7 |
> | | 8.8.8.8 |
> | enable_dhcp | True |
> | gateway_ip | 192.168.123.49 |
> | host_routes | |
> | id | 336674e1-eded-4e5b-a87c-744281bab14b |
> | ip_version | 4 |
> | name | fixed |
> | network_id | f6dd957c-3079-499d-a6bb-b34e278b23a6 |
> | tenant_id | d765841b7e9b450a8d0d91f3b1189ded |
> +------------------+-------------------------------------------------------+
>
>
> :~ # neutron subnet-update fixed --dns_nameservers list=false
> Invalid input for dns_nameservers. Reason: Invalid data format for
> nameserver: 'list=false'.
>
> :~ # neutron subnet-update fixed --dns_nameservers
> Invalid input for dns_nameservers. Reason: Invalid data format for
> nameserver: 'True'.
>
> :~ # neutron subnet-update fixed --dns_nameservers list=false 8.8.8.7 8.8.8.8
> Invalid input for dns_nameservers. Reason: 'list=false' is not a valid
> nameserver.
>
> :~ # quantum subnet-update fixed --dns_nameservers list=false ""
> Invalid input for dns_nameservers. Reason: 'list=false' is not a valid
> nameserver.
>
> :~ # neutron subnet-update fixed --dns-nameservers ""
> Invalid input for dns_nameservers. Reason: Invalid data format for
> nameserver: ''.
>
> Any idea how can I clear this field?
>
> Thanks,
> Alejandro
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