Re: [Openstack] [nova-compute] vm migration problem

Razique Mahroua Mon, 21 May 2012 03:18:06 -0700

Hey Eric,
make sure first to read that :
http://docs.openstack.org/trunk/openstack-compute/admin/content/configuring-live-migrations.html

and also make sure on both systems the user "nova" the SSH keys are installed
Razique

Eric Luo

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
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Re: [Openstack] [nova-compute] vm migration problem

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