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Thanks for the pointer Saravanan!
@Dan, would you mind if I continue the patch work at
https://review.openstack.org/#/c/383516/?

Cheers!
zenghui

On Wed, Aug 2, 2017 at 1:33 PM, Saravanan KR <skramaja at redhat.com> wrote:

> On Wed, Aug 2, 2017 at 5:21 AM, Zenghui Shi <zshi at redhat.com> wrote:
> >
> > On Wed, 2 Aug 2017 at 02:34 Ben Nemec <openstack at nemebean.com> wrote:
> >>
> >>
> >>
> >> On 07/25/2017 09:53 PM, Zenghui Shi wrote:
> >> > Hi,
> >> >
> >> > Could anyone shed some light on how to get the physical interface name
> >> > (e.g eth0) from network name (e.g PublicNetwork, ExternalNetwork) in
> >> > tripleo-heat-template service profile ?
> >> >
> >> > for example:
> >> >
> >> > I want to add a service profile under puppet/services/time/ptp.pp
> where
> >> > it uses 'PtpInterface' as a parameter to get physical interface name
> >> > (please refer to below piece of code), but I'd like to expose a more
> >> > user friendly parameter like NetworkName(e.g. provision network,
> >> > external network etc) instead of 'PtpInterface' and retrieve the
> actual
> >> > physical interface name from the NetworkName where the physical
> >> > interface is connected to, is there any possible way to do this ?
> >>
> >> I don't think there is.  In many cases the templates don't even know the
> >> name of the physical device on which the network will be running.  A
> >> simple example would be when a user uses the nicX abstraction to specify
> >> interfaces in their net-iso templates.  That doesn't get mapped to an
> >> actual interface name until os-net-config runs, and the results of that
> >> run are not available to the templates.
> >
> >
> > Thanks Ben!
> >
> > I'm also thinking if it makes sense to have a way in template or target
> > nodes to re-use the results of os-net-config for services which are
> bonded
> > to certain interfaces, or re-implement the os-net-config logic in
> template
> > to get the physical interface name. The latter one will be a repetitive
> work
> > of os-net-config.
>
> This patch [1] has been started by Dan Sneddon to provide the nic
> number to name mapping by providing an extra option "--interfaces" to
> os-net-config command. May this could be reused to get the mapping.
>
> Regards,
> Saravanan KR
>
> [1] https://review.openstack.org/#/c/383516/
>
> >
> > Cheers!
> > Zenghui
> >>
> >>
> >> >
> >> > ####
> >> > parameters:
> >> > [...]
> >> >    PtpInterface:      #  ---> change this parameter to PtpNetwork
> >> >      default: eth0
> >> >      description: PTP interfaces name.
> >> >      type: string
> >> >
> >> > resources:
> >> >    RoleParametersValue
> >> >      type: OS::Heat::Value
> >> >      properties:
> >> >        type: json
> >> >        value:             # ---> add logic to get real interface name
> >> > from PtpNetwork
> >> >          map_replace:
> >> >            - map_replace:
> >> >              - tripleo::profile::base::time::ptp::ptp4l_interface:
> >> > PtpInterface
> >> >              - values: {get_param: [RoleParameters]}
> >> >            - values:
> >> >                PtpInterface: {get_param: PtpInterface}
> >> >
> >> > outputs:
> >> >    role_data:
> >> >      description: Role ptp using commposable services.
> >> >      value:
> >> >        service_name: ptp
> >> >        config_settings:
> >> >          map_merge:
> >> >            - get_attr: [RoleParametersValue, value]
> >> > [...]
> >> > ####
> >> >
> >> > Thanks!
> >> > zenghui
> >> >
> >> >
> >> >
> >> > ____________________________________________________________
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> >> >
> >
> >
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