Open Stack

Hey, 
this is not a feature I'm aware of at the moment. But I think you can do that by iterating on the instance. The command 
nova show $instance_id will give you the host the instance is running on. You can use it to loop on a migration process. You can also use a mysql request in order to retrieve all the instances running on that node
> OS-EXT-SRV-ATTR:host   X
Razique Mahroua - Nuage & Co
razique.mahroua at gmail.com
Tel : +33 9 72 37 94 15



Le 8 janv. 2013 à 03:56, "Yuan, Ye A" <ye.a.yuan at intel.com> a écrit :

> Yep, it seems that our purposes are maintenance/test both.
> BTW, if one admin/oprator want to maintenance a host, he/she may want to relocate  all instance to another health node.
> If there is a command just like  ‘nova live-migrate --all’ and he/she need not care about selecting which node as destination, all works will be done by nova-scheduler.
>  
> Best wishes,
> Yale Yuan
>  
> From: Razique Mahroua [mailto:razique.mahroua at gmail.com] 
> Sent: Monday, January 07, 2013 4:56 PM
> To: Yuan, Ye A
> Cc: openstack-operators at lists.openstack.org
> Subject: Re: [Openstack-operators] A concept feature named 'scheduling live migration'
>  
> Hi Yuan ,
> would it be similar somehow to the feature which allows you to disable a service via keystone on a server?
> see : https://bugs.launchpad.net/keystone/+bug/1048662
>  
> Razique Mahroua - Nuage & Co
> razique.mahroua at gmail.com
> Tel : +33 9 72 37 94 15
> 
> <image001.jpg>
>  
> Le 7 janv. 2013 à 09:01, "Yuan, Ye A" <ye.a.yuan at intel.com> a écrit :
> 
> 
> Hi all,
> There is a feature in my mind just as below:
> In VMware, admin can use maintenance mode to set a host to entering maintenance mode, in which the host does not allow you to deploy or power on a virtual machine until all running virtual machines are powered down or migrated to different hosts.
> So, if there is a feature that enable scheduler while live migration rather than use destination hostname argument in shell command ‘nova live-migration <instance-uuid> <hostname>’, OpenStack can implement maintenance mode too. In other words, operator can migrate instance without specific destination hostname.
> If anyone has some suggestions, please feel free to let me know.
>  
> Best wishes,
> Yale Yuan
>  
> _______________________________________________
> OpenStack-operators mailing list
> OpenStack-operators at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators

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