[Openstack] oversubscribe node

Diego Parrilla SantamarĂ­a diego.parrilla.santamaria at gmail.com
Wed Aug 21 22:42:56 UTC 2013


Try to put those options in the nova.conf file that the nova-scheduler
process reads, not in the nova-compute servers.

Cheers
Diego

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Diego Parrilla
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On Wed, Aug 21, 2013 at 11:56 PM, Steve Heistand <steve.heistand at nasa.gov>wrote:

> Hi folks,
>
> so  Im a little confused, on my compute nodes I have the allocation ratio
> set:
>
> root at node004:~# cat /etc/nova/nova-compute.conf
> [DEFAULT]
> ..
> cpu_allocation_ratio=1.0
> ram_allocation_ratio=1.0
> ...
>
> but I got into a state where the node is oversubscribed.  From nova
> hypervisor-show node004:
>
> node004
> ..
> vcpus_used              36
> memory_mb_used  72837
> memory_mb            64379
> vcpus                       32
> ..
>
> I have zones/aggregates set up and of the instances, one was started in
> just launch it anywhere mode and another was told to start on
> a zone that is this node.
>
> In looking back I would have expected the zone specified instance be
> rejected.
>
> is this to be expected or a bug?
>
> thanks
>
> s
>
>
> --
> ************************************************************************
>  Steve Heistand                           NASA Ames Research Center
>  SciCon Group                             Mail Stop 258-6
>  steve.heistand at nasa.gov  (650) 604-4369  Moffett Field, CA 94035-1000
> ************************************************************************
>  "Any opinions expressed are those of our alien overlords, not my own."
>
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