Open Stack

I think what you want is nova evacuate which will migrate all instances on
a downed compute node to a new node. If you intend to preserve the disk of
the VMs during migration, you will need to have them configured on shared
storage. Here's the command info:

http://docs.openstack.org/user-guide/content/nova_cli_evacuate.html

Hope this helps.

-Erik


On Fri, May 30, 2014 at 3:55 PM, hossein zabolzadeh <zabolzadeh at gmail.com>
wrote:

> Any Idea?
>
> ---------- Forwarded message ----------
> From: hossein zabolzadeh <zabolzadeh at gmail.com>
> Date: Fri, May 30, 2014 at 12:01 PM
> Subject: If an instance going down!
> To: "openstack at lists.openstack.org" <openstack at lists.openstack.org>
>
>
> Hi,
> If an instance running on openStack going down, which infrastructure
> component is responsible to recover the vm from the failure by doing some
> mechanism such as live migration?
>
> If a host with multiple VMs going down, is there any openStack component
> to automatically recover all of VMs from the failure?(For example
> automatically start other host, and migrate all of the instances to the new
> one).
>
> Some experts said, this type of disaster recovery must be address at
> application layer(DR module on application bundled in VM), instead of
> infrastructure layer?
> What is your idea?
>
>
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