On 17 Oct 2012, at 14:39, Antonio Terceiro <[email protected]> wrote:

> Dave Pigott escreveu:
>> Hi guys,
>> 
>> I've deployed a new compute node in the cloud, and upped the VCPU
>> allocation in the project, but I'm seeing some oddities.
>> 
>> The "nova-manage service list" command tells me that nova-network and
>> nova-compute are not running on 02 (I knew that and am working on
>> restoring it) and 03 and 05. However, the instances that are running
>> on those nodes are still accessible. Additionally, when I try to
>> create an instance, it immediately errors.
> 
> That makes sense: once the VM's were started with KVM, they will
> continue to run independently of the processes that started them
> (nova-*).

Yeah, I kind of figured something like that was going on. Trouble is we've seen 
so many different types of fail in the process of getting the cloud running, 
that I'm never *quite* sure how broken things have got. :)

> 
>> I've had similar problems in the past, and typically I had to reboot
>> all nodes, starting with the control node (lava-cloud01). I also
>> believe (note wording) I need to do an update/upgrade on every node to
>> bring the cloud up to latest revisions of nova/services.
>> 
>> Obviously, if I do this, it will disrupt staging, dogfood and
>> fastmodels, so this is a warning that absent from any dissent, I will
>> reboot the cloud tomorrow morning. If you would rather defer this
>> let's discuss when it should be deferred to. Obviously, to get the v8
>> fast model instance up is paramount.
> 
> Interrupting staging and dogfood is fine, I think. For fastmodels, if
> you put the devices offline in the scheduler before the interruption and put
> them back online after it's done (i.e. control will still be accepting
> jobs and queuing them), it should be OK.
> 

Of course. Was planning on that, but good to be reminded, and I should have 
listed it in my e-mail.

Thanks

Dave


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