Hi Abbass,
I am in the process of coding some of this now - take a look at
https://blueprints.launchpad.net/nova/+spec/extensible-resource-tracking - now
has a specification document attached
https://etherpad.openstack.org/p/IcehouseNovaExtensibleSchedulerMetrics - the
design summit session on this topic
see what you think and feel free to comment - I think it covers exactly what
you describe.
Paul.
Paul Murray
HP Cloud Services
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-Original Message-
From: Lu, Lianhao [mailto:lianhao...@intel.com]
Sent: 22 November 2013 02:03
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [nova][scheduler][metrics] Additional metrics
Abbass MAROUNI wrote on 2013-11-21:
Hello,
I'm in the process of writing a new scheduling algorithm for openstack nova.
I have a set of compute nodes that I'm going to filter and weigh according to
some metrics collected from these compute nodes.
I saw nova.compute.resource_tracker and metrics (ram, disk and cpu)
that it collects from compute nodes and updates the rows corresponding to
compute nodes in the database.
I'm planning to write some modules that will collect the new metrics
but I'm wondering if I need to modify the database schema by adding
more columns in the 'compute_nodes' table for my new metrics. Will
this require some modification to the compute model ? Then how can I use
these metrics during the scheduling process, do I fetch each compute node row
from the database ? Is there any easier way around this problem ?
Best Regards,
There are currently some effort on this:
https://blueprints.launchpad.net/nova/+spec/utilization-aware-scheduling
https://blueprints.launchpad.net/nova/+spec/extensible-resource-tracking
- Lianhao
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