Open Stack

Hello Charles,

The specification looks very good and we can start with it for table and
data item events.

The only thing I'm not quite sure is implementation of table.usage
information.
I mean this part of description "Periodic usage notification generated by
the magnetodb-table-usage-audit cron job"

Until now we don't have central place for running such job for all tables
and I wouldn't want to introduce it, but having it working on each MDB api
instance will multiply the number of notifications. Also I'm not sure that
it will scale well with growing count of tables.

I believe that MDB should be pooled for table.usage as well as for other
data what describes general state of system by monitoring system.

What do you think?

Thanks,
Ilya



On Tue, May 27, 2014 at 5:56 PM, Charles Wang <Charles_Wang at symantec.com>wrote:

> Hi Dmitriy,
>
> Thank you very much for your feedback.
>
> Although it looks like MagnetoDB Events & Notifications component has some
> similarities to Ceilometer, it is much narrower scope. We only plan to
> provide immediate and periodic notifications of MagnetoDB table/data item
> CRUD activities based on Oslo Notification. There’s no backend database
> storing them, and no query API for those notifications. They are different
> from Ceilometer metrics and events. In the future when we integrate with
> Ceilometer, the MagnetoDB notifications are fed into Ceilometer to collect
> Ceilometer metrics, and/or generate Ceilometer events. Basically Ceilometer
> will be a consumer of MagnetoDB notifications.
>
> I’ll update the wiki further to define our scope clearer, and possibly
> drop the word "events” to indicate we focus on notifications.
>
> Regards,
>
> Charles
>
>
>
> From: Dmitriy Ukhlov <dukhlov at mirantis.com>
> Reply-To: "OpenStack Development Mailing List (not for usage questions)" <
> openstack-dev at lists.openstack.org>
> Date: Monday, May 26, 2014 at 7:28 AM
> To: "OpenStack Development Mailing List (not for usage questions)" <
> openstack-dev at lists.openstack.org>
> Subject: Re: [openstack-dev] [MagnetoDB] MagnetoDB events & notifications
>
> Hi Charles!
>
> It looks like to me that we are duplicating functionality of Ceilometer
> project.
>  Am I wrong? Have you considered Ceilometer integration for monitoring
> MagnetoDB?
>
>
> On Fri, May 23, 2014 at 6:55 PM, Charles Wang <Charles_Wang at symantec.com>wrote:
>
>> Folks,
>>
>> Please take a look at the initial draft of MagnetoDB Events and
>> Notifications wiki page:
>> https://wiki.openstack.org/wiki/MagnetoDB/notification. Your feedback
>> will be appreciated.
>>
>> Thanks,
>>
>> Charles Wang
>> charles_wang at symantec.com
>>
>>
>>
>> _______________________________________________
>> OpenStack-dev mailing list
>> OpenStack-dev at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>>
>>
>
>
> --
> Best regards,
> Dmitriy Ukhlov
> Mirantis Inc.
>
> _______________________________________________
> OpenStack-dev mailing list
> OpenStack-dev at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20140528/616a8974/attachment.html>