Open Stack

Cheers Gao

It definitely makes sense to collect additional metrics such as power and temperature, and make that available for selective decisions you would want to take. However, I am just wondering if you could realistically feed those metrics as variables for scheduling, this is the main part I feel is questionable. I assume then you would use temperature &|| power etc to gauge if you want to schedule another VM on a given node when a given temperature threshold is reached. Is this the main case you are thinking of Gao?

Alan

From: Gao, Fengqian [mailto:fengqian.gao at intel.com]
Sent: December-18-13 10:23 PM
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [Nova] [Ironic] Get power and temperature via IPMI

Hi, Alan,
I think, for nova-scheduler it is better if we gather more information.  And In today's DC, power and temperature are very important facts to considering.
CPU/Memory utilization is not enough to describe nodes' status. Power/inlet temperature should be noticed.

Best Wishes

--fengqian

From: Alan Kavanagh [mailto:alan.kavanagh at ericsson.com]
Sent: Thursday, December 19, 2013 2:14 AM
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [Nova] [Ironic] Get power and temperature via IPMI

Hi Gao

What is the reason why you see it would be important to have these two additional metrics "power and temperature" for Nova to base scheduling on?

Alan

From: Gao, Fengqian [mailto:fengqian.gao at intel.com]
Sent: December-18-13 1:00 AM
To: openstack-dev at lists.openstack.org<mailto:openstack-dev at lists.openstack.org>
Subject: [openstack-dev] [Nova] [Ironic] Get power and temperature via IPMI

Hi, all,
I am planning to extend bp https://blueprints.launchpad.net/nova/+spec/utilization-aware-scheduling with power and temperature. In other words, power and temperature can be collected and used for nova-scheduler just as CPU utilization.
I have a question here. As you know, IPMI is used to get power and temperature and baremetal implements IPMI functions in Nova. But baremetal driver is being split out of nova, so if I want to change something to the IPMI, which part should I choose now? Nova or Ironic?


Best wishes

--fengqian

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20131220/3d86960b/attachment.html>