Re: [Openstack] Error during live migration

Razique Mahroua Thu, 15 Aug 2013 01:03:28 -0700

I was so convinced we resolved your issue Guilherme

but maybe it was someone else :)

the error simply means the user "nova" from the first CN cannot connect as the user "nova" to the second CN it needs to send the image to

Here are few checks :

#1 - Exchange all nova's public keys between all compute nodes

#2 - Make sure the connection with/ from that user is allowed (that you don't have directive such as "AllowUsers" in /etc/ssh/sshd_config)

#3 - Make sure in /etc/passwd, the nova user has a shell

Razique Mahroua - Nuage & Co

razique.mahr...@gmail.com

Tel : +33 9 72 37 94 15

Le 15 août 2013 à 09:39, james <jsha...@gmail.com> a écrit :

Pigging backing on the answer before me but yes, i had the same problem. Following the setup of ssh keys for the user 'Nova' between nodes will resolve the problem for you.

Kind Regards,

James Shaw

On 15 August 2013 02:10, Md. Maruful Hassan <mrf....@gmail.com> wrote:

I have not done the live-migration setup before but looking at the log it seems like you don't have ssh setup right between your compute nodes.

013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp Command: ssh 10.3.77.52 mkdir -p /var/lib/nova/instances/e04986a1-8f56-4dd9-9995-419e05430da3

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp Exit code: 255
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp Stdout: ''
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp Stderr: 'Permission denied, please try again.\r\nPermission denied, please try again.\r\nPermission denied (publickey,password).\r\n'

Setup ssh-key based passwordless access for user 'nova' (or whatever user nova process is running as ) between nodes. Then try again.

--
m@ruf

On Thu, Aug 15, 2013 at 4:52 AM, Guilherme Russi <luisguilherme...@gmail.com> wrote:

Hello guys,

I've been facing an error with live migration since last week and I wonder why I can't migrate my instances. I'm using the Grizzly release and I got this error in my both compute nodes:

2013-08-14 15:49:47.788 ERROR nova.compute.manager [req-1fad8da2-2682-48a4-a390-64cb00036568 c402785616534f2096b34ce132b7d3f2 d532a4fc2e9e4b5f83b6dec7085237e5] [instance: e04986a1-8f56-4dd9-9995-419e05430da3] Unexpected error while running command.

Stderr: 'Permission denied, please try again.\r\nPermission denied, please try again.\r\nPermission denied (publickey,password).\r\n'. Setting instance vm_state to ERROR

2013-08-14 15:49:48.294 ERROR nova.openstack.common.rpc.amqp [req-1fad8da2-2682-48a4-a390-64cb00036568 c402785616534f2096b34ce132b7d3f2 d532a4fc2e9e4b5f83b6dec7085237e5] Exception during message handling

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp Traceback (most recent call last):

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/amqp.py", line 430, in _process_data

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp rval = self.proxy.dispatch(ctxt, version, method, **args)

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/dispatcher.py", line 133, in dispatch

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp return getattr(proxyobj, method)(ctxt, **kwargs)
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 117, in wrapped

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp temp_level, payload)
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp self.gen.next()
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 94, in wrapped

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp return f(self, context, *args, **kw)
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 209, in decorated_function

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp pass
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp self.gen.next()
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 195, in decorated_function

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp return function(self, context, *args, **kwargs)
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 260, in decorated_function

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp function(self, context, *args, **kwargs)
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 237, in decorated_function

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp e, sys.exc_info())
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp self.gen.next()
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 224, in decorated_function

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp return function(self, context, *args, **kwargs)
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2354, in resize_instance

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp block_device_info)
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 3467, in migrate_disk_and_power_off

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp inst_base_resize)
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp self.gen.next()
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 3444, in migrate_disk_and_power_off

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp utils.execute('ssh', dest, 'mkdir', '-p', inst_base)

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/dist-packages/nova/utils.py", line 239, in execute

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp cmd=' '.join(cmd))
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp ProcessExecutionError: Unexpected error while running command.

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp Command: ssh 10.3.77.52 mkdir -p /var/lib/nova/instances/e04986a1-8f56-4dd9-9995-419e05430da3

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp Exit code: 255
2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp Stdout: ''

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp Stderr: 'Permission denied, please try again.\r\nPermission denied, please try again.\r\nPermission denied (publickey,password).\r\n'

2013-08-14 15:49:48.294 1700 TRACE nova.openstack.common.rpc.amqp

Can anybody help me?

Regards.

Guilherme.

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Re: [Openstack] Error during live migration

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