openstack team mailing list archive

[Salvatore Orlando <sorlando@xxxxxxxxxx>]

Hi Trevor,

sorry for the delay in the response.
It seems you want a L2-only network.
In theory, all you should do to achieve this is to not create a subnet
on your network.
Disabling DHCP on the subnet won't make any difference, since the
--enable-dhcp option only controls the IP address delivery mechanism,
not whether IPAM should be performed or not. However if you don't use
DHCP (and you do not have in place any other IP injection mechanism),
neither nova or quantum will configure IPs on your instances, and you
should be able to use your own allocation system, even if the IP
information reported from nova are then likely to differ from the
actual configuration.

Unfortunately, I seem to recall an issue in nova where the VIF was not
created at all if an instance was created on a network without a
subnet; however, I'm not informed on the current status of this issue.

On 8 February 2013 15:14,  <tra26@xxxxxxxxxxxxx> wrote:
> Anyone?
>
>
> Thanks,
>
> -Trevor
>> Again, is there a better place to ask these types of questions?
>>
>> I am trying to get a provider network working where I have full control of
>> the ip allocations. What I need is to be able to have 2 (or more public ip
>> addresses, or really to our private network). I know this can't be done
>> with floating ips, so that is why I am looking to patch it into my network
>> and just manually configure the ips. (probably also having a flat vm
>> network as well).
>>
>> I've got a provider network configured as so, with no dhcp on the subnet:
>> +---------------------------+--------------------------------------+
>> | Field                     | Value                                |
>> +---------------------------+--------------------------------------+
>> | admin_state_up            | True                                 |
>> | id                        | f1c2fb46-72a3-410c-b06a-518c56659d62 |
>> | name                      | provider                             |
>> | provider:network_type     | flat                                 |
>> | provider:physical_network | prinet                               |
>> | provider:segmentation_id  |                                      |
>> | router:external           | True                                 |
>> | shared                    | True                                 |
>> | status                    | ACTIVE                               |
>> | subnets                   | c68bb08b-483f-49a5-be08-b690e84c4f17 |
>> | tenant_id                 | 35cd7af3118248bcb0ada0080afa3403     |
>> +---------------------------+--------------------------------------+
>>
>> +------------------+------------------------------------------------------+
>> | Field            | Value
>> |
>> +------------------+------------------------------------------------------+
>> | allocation_pools | {"start": "192.168.224.2", "end": "192.168.224.254"}
>> |
>> | cidr             | 192.168.224.0/24
>> |
>> | dns_nameservers  |
>> |
>> | enable_dhcp      | False
>> |
>> | gateway_ip       | 192.168.224.1
>> |
>> | host_routes      |
>> |
>> | id               | c68bb08b-483f-49a5-be08-b690e84c4f17
>> |
>> | ip_version       | 4
>> |
>> | name             |
>> |
>> | network_id       | f1c2fb46-72a3-410c-b06a-518c56659d62
>> |
>> | tenant_id        | 35cd7af3118248bcb0ada0080afa3403
>> |
>> +------------------+------------------------------------------------------+
>>
>>
>> nova is assigning an ip to the port regardless of there being no dhcp and
>> therefore the port does not allow me to configure it. Using a different ip
>> results in the iptables rules rejecting the packets.
>>
>> Anyone know how to fix this or get around this? Please?
>>
>> -Trevor
>>
>>
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>
>
>
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