openstack team mailing list archive

[Eldar Nugaev <enugaev@xxxxxxxxxxxxxxxx>]

Hi Erik

Thank you for response!
Yes, you are absolutely right OpenStack API already support shared IP groups.
Suppose there are some misunderstanding, because I wrote about floating IPs.

I want to have API for association IPs from floating IPs pool with
particular VM.

At this moment we have #1 implementation as a path in our RPM repo
http://yum.griddynamics.net/. And going to make the merge proposal to
trunk.

Also we going to create blueprint about #3 and attach branch to it.

Eldar

On Sat, Apr 16, 2011 at 2:34 AM, Erik Carlin <erik.carlin@xxxxxxxxxxxxx> wrote:
> Eldar -
>
> The OpenStack API already supports sharing IPs between instances (although
> this may be an extension?).  What exact behavior are you after?  More
> important than the way in which we expose via the API is how it's
> implemented.  It's important to note that this is extremely network
> topology dependent.  Sharing IPs today requires L2 adjacency so other VMs
> can GARP for the IP.  L2 doesn't work at scale so you need another
> mechanism.  I'm pretty sure the way AWS does it is to have a separate pool
> of IPs and inject /32 routes higher up that route towards the appropriate
> VM IP.  What are your thoughts around how this would be implemented?
>
> Multiple people are working towards an independent Network as a Service
> external to nova so it may make sense to plug this requirement in there.
>
> Erik
>
> On 4/11/11 8:31 AM, "Eldar Nugaev" <enugaev@xxxxxxxxxxxxxxxx> wrote:
>
>>Hello everyone,
>>
>>We going to add possibility to assigning floating IP addresses in
>>OpenStack API.
>>Our goal reproduce AWS behavior when creating instance automatically
>>assigns any free floating IP or add methods to OpenStack API for
>>allocation and association API addresses.
>>
>>At this time we see three way:
>>
>>1. FLAG --auto_assign_floating_ip (default=False)
>>2. Optional parameter "auto_assign_floating_ip" in existing "create"
>>method
>>3. OpenStack API add floating_ip - allocate_floating_ip,
>>associate_floating_ip
>>
>>What way is more suitable at this time?
>>
>>--
>>Eldar
>>Skype: eldar.nugaev
>>
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-- 
Eldar
Skype: eldar.nugaev