[Openstack] [nova-compute] vm migration problem

Razique Mahroua razique.mahroua at gmail.com
Thu May 24 07:38:56 UTC 2012


Yup,
our friend smooser prensented it
http://ubuntu-smoser.blogspot.fr/2010/03/introducing-cloud-inits-cloud-config.html

> Lorin Hochstein <mailto:lorin at nimbisservices.com>
> 23 mai 2012 19:25
>
>
>
> Wow, I never knew about that package. Are all of those utils 
> compatible with OpenStack? Are they documented everywhere? Now that 
> we're adding distribution-specific content to the docs, these are 
> probably worth a mention in the Ubuntu OpenStack install guide.
>
> Take care,
>
> Lorin
> --
> Lorin Hochstein
> Lead Architect - Cloud Services
> Nimbis Services, Inc.
> www.nimbisservices.com <https://www.nimbisservices.com/>
>
>
>
>
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> Soren Hansen <mailto:soren at linux2go.dk>
> 23 mai 2012 00:08
>
> Ubuntu's cloud-utils package has a cloud-run-instances utility that does
> this. It's not exactly in the do-one-thing-and-do-it-well sort of
> category, but perhaps it's just what you need.
>
> Lorin Hochstein <mailto:lorin at nimbisservices.com>
> 21 mai 2012 23:30
> Has anybody ever written a script that grabs the host public key from 
> the instance's console and updates the .ssh/config/known_hosts file 
> accordingly, instead of throwing away host key checking?  That would 
> be a handy little thing if it was out there.
>
> Take care,
>
> Lorin
> --
> Lorin Hochstein
> Lead Architect - Cloud Services
> Nimbis Services, Inc.
> www.nimbisservices.com <https://www.nimbisservices.com/>
>
>
>
>
>
>
> _______________________________________________
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> Post to : openstack at lists.launchpad.net
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> Joe Breu <mailto:joseph.breu at rackspace.com>
> 21 mai 2012 12:09
> Hi Eric,
>
> It would appear that the nova user on one of the compute nodes had at 
> one time cached the SSH host key of the other node and now the key has 
> changed.  You can bypass this by adding the following to 
> ~nova/.ssh/config on both compute nodes:
>
> Host *
>    StrictHostKeyChecking no
>    UserKnownHostsFile=/dev/null
>
>
> ---
> Joseph Breu
> Deployment Engineer
> Rackspace Cloud Builders
> 210-312-3508
>
> On May 21, 2012, at 11:34 AM, Eric Luo wrote:
>
>
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> Eric Luo <mailto:nextfool at gmail.com>
> 21 mai 2012 11:34
> Hello ,all.
>
> I have a two nodes installation . OS1 is the cloud controller ,and OS2 
> is a nova-compute node.
> I have a vm (name as vm1)  running on OS1.
> When I use the command *  nova migrate  vm1 *
> *
> *
> The dashboard is showing the vm1 as : status :error ,task :Resize Prep
> I tail ed  the nova-compute.log in OS1, and found the following error 
> information while running the * nova migrate  vm1 *command :
>
>
> Can someone please explain to me what does these error mean ,and 
> what's wrong with my config ...
>
>
> 2012-05-21 17:20:45 ERROR nova.compute.manager 
> [req-d0f494cb-e9d6-41d2-b6df-6faa432a644d 
> 6ffaaedb60c24f5eb888319e1e387d75 0d7a5a12b6f54aa9bff986bf138bc0b7] 
> Unex pected error while running command.
> Command: ssh 192.168.0.205 mkdir -p 
> /var/lib/nova/instances/instance-0000000a
> Exit code: 255
> Stdout: ''
> Stderr: 'Host key verification failed.\r\n'. Setting instance vm_state 
> to ERROR
> 2012-05-21 17:20:45 ERROR nova.rpc.amqp 
> [req-d0f494cb-e9d6-41d2-b6df-6faa432a644d 
> 6ffaaedb60c24f5eb888319e1e387d75 0d7a5a12b6f54aa9bff986bf138bc0b7] 
> Exception during message handling
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp Traceback (most recent call last):
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp   File 
> "/usr/lib/python2.7/dist-packages/nova/rpc/amqp.py", line 252, in 
> _process_data
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp     rval = 
> node_func(context=ctxt, **node_args)
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp   File 
> "/usr/lib/python2.7/dist-packages/nova/exception.py", line 114, in wrapped
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp     return f(*args, **kw)
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp   File 
> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 153, 
> in decorated_function
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp     function(self, context, 
> instance_uuid, *args, **kwargs)
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp   File 
> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 177, 
> in decorated_function
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp     sys.exc_info())
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp   File 
> "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp     self.gen.next()
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp   File 
> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 171, 
> in decorated_function
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp     return function(self, 
> context, instance_uuid, *args, **kwargs)
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp   File 
> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1330, 
> in resize_instance
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp     
> self._set_instance_error_state(context, instance_uuid)
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp   File 
> "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp     self.gen.next()
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp   File 
> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1325, 
> in resize_instance
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp     instance_type_ref, 
> self._legacy_nw_info(network_info))
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp   File 
> "/usr/lib/python2.7/dist-packages/nova/exception.py", line 114, in wrapped
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp     return f(*args, **kw)
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp   File 
> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/connection.py", 
> line 2363, in migrate_disk_and_power_off
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp     raise e
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp ProcessExecutionError: 
> Unexpected error while running command.
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp Command: ssh 192.168.0.205 
> mkdir -p /var/lib/nova/instances/instance-0000000a
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp Exit code: 255
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp Stdout: ''
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp Stderr: 'Host key verification 
> failed.\r\n'
> 2012-05-21 17:20:45 TRACE nova.rpc.amqp
> ^C
>
>
>
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-- 
Nuage & Co - Razique Mahroua
razique.mahroua at gmail.com



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