[openstack-dev] [nova][scheduler] Availability Zones and Host aggregates..

Jesse Pretorius jesse.pretorius at gmail.com
Fri Mar 28 11:01:38 UTC 2014

On 27 March 2014 20:52, Chris Friesen <chris.friesen at windriver.com> wrote:

> It'd be nice to be able to do a heat template where you could specify
> things like "put these three servers on separate hosts from each other, and
> these other two servers on separate hosts from each other (but maybe on the
> same hosts as the first set of servers), and they all have to be on the
> same network segment because they talk to each other a lot and I want to
> minimize latency, and they all need access to the same shared instance
> storage for live migration".

Surely this can be achieved with:
1) Configure compute hosts with shared storage and on the same switch
infrastructure in a host aggregate, with an AZ set in the aggregate
(setting the AZ gives visibility to the end-user)
2) Ensure that both the GroupAntiAffinityFilter and AvailabilityZoneFilter
are setup on the scheduler
3) Boot the instances using the availability zone and group scheduler hints
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