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Hello Greg,

Blueprint you have put together is very much in line what we have done in
openContrail virtual services implementation.

One thing that we have done is "Service instance" is a single type of
service provided by virtual appliance.
e.g. firewall or load-balancer etc
"Service instance" itself can be made up one or more virtual machines. This
will usually be case when you need to scale out services for performance
reasons

Another thing that we have done is introduced a concept of service
template. Service template describes how the service can be deployed. Image
specified in the template can also be snapshot of VM with cookie cutter
configuration.

service templates can be created by admins.Service instances are created by
tenants (if allowed) using a service templates.

So a a single firewall instance from vendor can be packaged as transparent
L2 firewall in one template and in network L3 firewall in another template.

Regards
-Harshad



On Tue, 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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>
>
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