[rhos-list] Live migration using WebUI

[Julie Pichon]

"Perry Myers" <pmyers at redhat.com> wrote:
> On 09/02/2013 01:28 AM, Johnson Dharmaraj wrote:
> > Hi,
> > 
> > I have a 2 node OpenStack setup running.
> > 
> > I have setup live migration using with /var/lib/nova/instances/ mounted
> > from an nfs share. The instances are getting migrated from one compute
> > node to the other seamlessly while i run the command "nova
> > live-migration <instanceid> <host>"
> > 
> > However when i use the webUI to migrate the instance nova-compute shows
> > the following error
> 
> The odd thing about this is that Horizon simply uses the same exact REST
> APIs that you would be using when you use the Nova python CLI.  Horizon
> doesn't have a different interface than the CLI would.

Note that Horizon currently does not support live migrations.
The "Migrate" command uses the "nova migrate" API which involves
a reboot.

Unfortunately I'm not familiar enough with the underlying nova
mechanism to help debug the error.

Julie

> When you tried both the nova CLI and Horizon interface, were you
> migrating between the exact same hosts?  Perhaps your SSH keys are set
> up properly between the hosts that were involved in the CLI migration,
> but are not set up properly between the hosts uses in the Horizon
> initiated migration?
> 
> > ssh <ip-address> mkdir -p
> > /var/lib/nova/instances/15ba85b1-a457-45f1-bcc3-b197480c0e31
> > 2013-09-01 22:22:06.216 31208 TRACE nova.openstack.common.rpc.amqp Exit
> > code: 255
> > 2013-09-01 22:22:06.216 31208 TRACE nova.openstack.common.rpc.amqp
> > Stdout: ''
> > 2013-09-01 22:22:06.216 31208 TRACE nova.openstack.common.rpc.amqp
> > Stderr: 'Host key verification failed.\r\n'
> > 
> > Have anyone rectified a similar problem?
> 
>