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Hi Rudra,

We tried to separate policy from mechanism for this blueprint, and are
trying to address the latter. I believe the logic for scaling, and or
clustering multiple service VMs to map to a logical service instance would
lie in the service plugin which realizes the logical service instance.

Can you please elaborate on the service/use-case where you would need to
plug the VM into different networks?

Thanks,
~Sumit.


On Tue, Oct 8, 2013 at 3:48 PM, Rudra Rugge <rrugge at juniper.net> wrote:

>  Hi Greg,
>
>  Is there any discussion so far on the scaling of VMs as in launching
> multiple VMs
> for the same service. It would also have impact on the VIF scheme.
>
>  How can we plug these services into different networks - is that still
> being worked
> on?
>
>  Thanks,
> Rudra
>
>  On Oct 8, 2013, at 2:48 PM, "Regnier, Greg J" <greg.j.regnier at intel.com>
> wrote:
>
>   Hi,****
>  ** **
>  Re: blueprint:
> https://blueprints.launchpad.net/neutron/+spec/adv-services-in-vms****
>  Before going into more detail on the mechanics, would like to nail down
> use cases. ****
>  Based on input and feedback, here is what I see so far. ****
>
>  Assumptions:****
>   ****
>
> - a 'Service VM' hosts one or more 'Service Instances'****
>
> - each Service Instance has one or more Data Ports that plug into Neutron
> networks****
>
> - each Service Instance has a Service Management i/f for Service
> management (e.g. FW rules)****
>
> - each Service Instance has a VM Management i/f for VM management (e.g.
> health monitor)****
>   ****
>  Use case 1: Private Service VM****
>
> Owned by tenant****
>
> VM hosts one or more service instances****
>
> Ports of each service instance only plug into network(s) owned by tenant**
> **
>   ****
>  Use case 2: Shared Service VM****
>
> Owned by admin/operator****
>
> VM hosts multiple service instances****
>
> The ports of each service instance plug into one tenants network(s)****
>
> Service instance provides isolation from other service instances within VM
> ****
>
>  ****
>  Use case 3: Multi-Service VM****
>
> Either Private or Shared Service VM****
>
> Support multiple service types (e.g. FW, LB, …)****
>  ** **
>  -          Greg****
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