On 14/09/2017 16:35, Balazs Lengyel wrote:
See below!
On 2017-09-14 16:32, Martin Bjorklund wrote:
Hi Balazs,
Thanks for your review. Comments inline.
Balazs Lengyel<[email protected]> wrote:
Hello,
Reading the draft-ietf-netmod-revised-datastores-04 some comments:
General) The system often adds data to the <running> or <intended>
datastore already not just to <operational>: e.g.
UC1: I have a server configured in running. I need to bind it to an
ip-address. The ip-address might be the local loopback address,
however if that is only added to <operational>, validation will
fail indicating that the server is bound to a non-existent
address. How to handle this?
UC2: I have a set of capabilities set by the system
e.g. supported-reporting-intervals. I need to configure a job that
MUST use one of these intervals. If the supported-reporting-intervals
are only added to <operational> I can not validate the
selected-interval in my configured job.
My proposal is to allow the system to add data to running as
well. Actually I think that is a more relevant case then adding
configuration just to <operation>.
I think the consensus is that in general it is a bad idea if servers
(spontaneously) add data to <running>. However, there is nothing in
the new or old architectures that prohibits this.
BALAZS: I strongly disagree. I know others are also adding stuff to
running as well.
IMHO the above use cases are real and used and actually important for us.
I would like to see them included in some way.
I basically agree with Martin here.
The architecture is cleaner if <running> is only written by the client.
This avoid requiring clients tracking unexpected changes to running, and
opens up the possibility of validating configuration off the box.
Ideally extra stuff should be added into <intended> and then become
visible in <operational>.
I understand that some systems add data to <running>, and this is fine.
But I think that it is better for an architecture document to be silent
on this point.
Thanks,
Rob
regards Balazs
--
Balazs Lengyel Ericsson Hungary Ltd.
Senior Specialist
Mobile: +36-70-330-7909 email:[email protected]
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