[Openstack] CPU Allocation Ratio / OverCommit, not working, need help...

Vladimir Eremin veremin at mirantis.com
Thu Oct 22 10:40:13 UTC 2015


Hi Martinx,

You could check what’s going wrong if you set debug to True in your nova.con on controller, then restart nova-scheduler. Scheduler’s log contains lot of debug, so you could easily figure out the problem.

I bet it because of RAM by the way.

-- 
With best regards,
Vladimir Eremin,
Fuel Deployment Engineer,
Mirantis, Inc.



> On 22 Oct 2015, at 02:33, Martinx - ジェームズ <thiagocmartinsc at gmail.com> wrote:
> 
> Guys,
> 
> I deployed Liberty on Trusty, on a 2Core physical box, with HT
> enabled, so, I can see 4 Cores.
> 
> However, I'm trying to launch 3 Instances (m1.medium, 2 vCPUs each),
> totalizing 6 vCPUs but, it doesn't work.
> 
> I have enough RAM and enough disk...
> 
> Also, I tried to increase the cpu_allocation_ratio to 100.0, didn't
> worked either...
> 
> My nova.conf contains:
> 
> https://github.com/sandvine/os-ansible-deployment-lite/blob/liberty/ansible/roles/nova_aio/templates/nova.conf
> 
> What am I missing? Isn't it 16:1 by default?
> 
> Thanks!
> Thiago
> 
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