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From Chiradeep Vittal <>
Subject Re: Multiple IP's to one instance
Date Mon, 26 Nov 2012 18:41:58 GMT
FWIW, it is a oft-requested feature in AWS as well:

On 11/21/12 6:41 PM, "Clayton Weise" <> wrote:

>> I also argue that what they are asking for really is in conflict of the
>>purpose of a cloud environment.
>I think this depends on the scope of who the cloud owner is.  If the
>owner is a single organization then yes, I would agree.  However if the
>owner is a service provider, than I would disagree.  I know there are
>larger things on the table for the ACS crew, so I'm not going to try and
>make a judgment call here as to how they should prioritize because that's
>really more up to the community at large and what kind of feedback they
>get from their paying clients (CloudPlatform) as well.  And that's not
>something I think either of us have the data to make a decision on.
>That being said, I don't know what kind of work is involved in adding a
>feature like this, and how much it would actually detract from the future
>development of ACS.  I know it's something that has come up in IRC on
>more than a few occasions and it's not the first time we've seen it on
>the mailing list either.  I would also encourage anybody involved in the
>community with the skills required to work out a tech spec on this and
>put something more formal together.  I think part of the issue has been
>the fact (as we've seen) that there isn't a solid consensus on how to
>even accomplish this, let alone the specific mechanics of how it will
>-----Original Message-----
>From: Boylan, James []
>Sent: Wednesday, November 21, 2012 5:51 PM
>To: ''
>Subject: Re: Multiple IP's to one instance
>I also argue that what they are asking for really is in conflict of the
>purpose of a cloud environment. If you are merely after a virtualized
>environment you can use vsphere, kvm with virt-manager or xenserver.
>Multiple IPs per nic do nothing to improve the performance or the
>functionality of a cloud environment.
>Going down the road of adding features like that would be taking valuable
>development time away from tasks and features that actually benefit a
>cloud architecture. While I do understand their issue, there are other
>ways of implementing what they are listing as reasons that is cloud
>architecture friendly. (using NAT and isolated private networks for one)
>-- James
>----- Original Message -----
>From: David Nalley []
>Sent: Wednesday, November 21, 2012 06:12 PM
>Subject: Re: Multiple IP's to one instance
>>  - it is expected that there is a 'primary ip' assigned by DHCP and the
>> additional ips are assigned manually by the VM owner. However additional
>> ips are requested through CS API/UI.
>I am conflicted on this - I know the limitations with adding
>additional interfaces. I'd almost argue for requiring number of
>interfaces/IPs to be set at machine instantiation and still handing
>out addresses to all interfaces via DHCP, but not all OSes will handle
>that cleanly.

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