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Oh don't worry.
The nova-scheduler and other nova components will take care all of it.
Just run the disable nova-compute command and run another instance. You'll see.

On Thu, Jul 12, 2012 at 4:16 PM, Trinath Somanchi
<trinath.somanchi at gmail.com> wrote:
> Thanks for the reply.
>
> If I stop the Nova-Compute in Essex-1 machine. then How will Controller and
> Nodes communicate via libvirt where in turn Nova-compute handles it.?
>
>
>
> On Thu, Jul 12, 2012 at 1:00 PM, Sébastien Han <han.sebastien at gmail.com>
> wrote:
>>
>> $ sudo nova-manage service disable --host=ESSEX-1 --service nova-compute
>>
>> It's also good to read the documentation before asking questions.
>>
>>
>> http://docs.openstack.org/essex/openstack-compute/admin/content/managing-the-cloud.html#d6e6254
>>
>> Cheers.
>>
>> On Thu, Jul 12, 2012 at 9:14 AM, Christian Wittwer <wittwerch at gmail.com>
>> wrote:
>>>
>>> You can just stop nova-compute on the essex-1 node.
>>>
>>> 2012/7/12 Trinath Somanchi <trinath.somanchi at gmail.com>
>>>>
>>>> Hi-
>>>>
>>>> I have installed Openstack on a Machine ESSEX-1 which is the controller
>>>> and Nova-Compute on another machine ESSEX-2 which acts as an agent/node.
>>>>
>>>> When ever I start an new instance, the VM instance is getting created in
>>>> the CONTROLLER (ESSEX-1) machine not in the ESSEX-2 machine, the agent/node.
>>>>
>>>> Please kindly help me on how to restrict/instruct the controller to
>>>> create the VM instances only on the Agent/Nodes only.
>>>>
>>>> Thanking you for the help.
>>>>
>>>>
>>>> --
>>>> Regards,
>>>> ----------------------------------------------
>>>> Trinath Somanchi,
>>>> +91 9866 235 130
>>>>
>>>>
>>>> _______________________________________________
>>>> Mailing list: https://launchpad.net/~openstack
>>>> Post to     : openstack at lists.launchpad.net
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>>>>
>>>
>>>
>>> _______________________________________________
>>> Mailing list: https://launchpad.net/~openstack
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>>>
>>
>
>
>
> --
> Regards,
> ----------------------------------------------
> Trinath Somanchi,
> +91 9866 235 130
>
>
> _______________________________________________
> Mailing list: https://launchpad.net/~openstack
> Post to     : openstack at lists.launchpad.net
> Unsubscribe : https://launchpad.net/~openstack
> More help   : https://help.launchpad.net/ListHelp
>



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