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Looks like we can use user_data and cloud-init to do this stuff.

Adding the following content into user_data.txt and launch instance like
this: nova boot --user-data user_data.txt ...,
the instance will shutdown after boot is finished.

power_state:
 mode: poweroff
 message: Bye Bye

You can find more details in cloud-init document[1].

[1]:
https://github.com/number5/cloud-init/blob/master/doc/examples/cloud-config.txt

2016-01-22 3:32 GMT+08:00 Fox, Kevin M <Kevin.Fox at pnnl.gov>:

> The nova instance user spec has a use case.
> https://review.openstack.org/#/c/222293/
>
> Thanks,
> Kevin
> ________________________________________
> From: Matt Riedemann [mriedem at linux.vnet.ibm.com]
> Sent: Thursday, January 21, 2016 7:32 AM
> To: openstack-dev at lists.openstack.org
> Subject: Re: [openstack-dev] [nova] Feature suggestion - API for creating
> VM without powering it up
>
> On 1/20/2016 10:57 AM, Shoham Peller wrote:
> > Hi,
> >
> > I would like to suggest a feature in nova to allow creating a VM,
> > without powering it up.
> >
> > If the user will be able to create a stopped VM, it will allow for
> > better flexibility and user automation.
> >
> > I can personally say such a feature would greatly improve comfortability
> > of my work with nova - currently we shutdown each vm manually as we're
> > creating it.
> > What do you think?
> >
> > Regards,
> > Shoham Peller
> >
> >
> >
> __________________________________________________________________________
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> >
>
> What is your use case?
>
> --
>
> Thanks,
>
> Matt Riedemann
>
>
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