yahoo-eng-team team mailing list archive
-
yahoo-eng-team team
-
Mailing list archive
-
Message #78706
[Bug 1804125] Re: Nova placement disregards nova aggregate metadata
I think at this point we can mark the nova portion of this as won't fix
with these changes to manage allocation ratios:
https://docs.openstack.org/nova/latest/admin/configuration/schedulers.html
#allocation-ratios
The workaround outside of that is to rely on that osc-placement patch
linked into comment 19.
** Changed in: nova
Status: Triaged => Won't Fix
--
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1804125
Title:
Nova placement disregards nova aggregate metadata
Status in OpenStack Compute (nova):
Won't Fix
Status in placement-osc-plugin:
Opinion
Bug description:
OpenStack 17.0.8 deployed via OpenStack-Ansible.
We have a compute environment set up with several nova aggregates,
across which we wish to configure different cpu allocation ratios.
Setting cpu_allocation_ratio as metadata on an aggregate and invoking
the AggregateCoreFilter scheduler filter is ineffective and hosts fail
to schedule past the default allocation ratio for a given compute
node; debug scheduler logs suggest that the ignored compute nodes
never even make it into the scheduler filter list, and indeed aren't
even listed in the host state updates that scheduler logs.
It appears from this single comment I was able to find in another bug
report that placement intentionally disregards aggregate metadata, and
so excludes compute nodes that might well be capable of scheduling
instances:
https://bugs.launchpad.net/nova/+bug/1742827/comments/13
Manually updating nova.conf on the affected compute nodes to set the
intended cpu_allocation_ratio works, but means we need to set up an
exception in our OSA config, and that hosts will not automatically
obtain new resource allocation ratios when moved between aggregates.
Is this intended placement behavior? If so, what's the function of
AggregateCoreFilter, and is there a way to restore its pre-placement
functionality?
To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1804125/+subscriptions
References