Open Stack

Ok, let me write down what I've done:

#1 - Logged with nova's user at my first CN and generate a key with
ssh-keygen -t dsa at the /var/lib/nova/.ssh location;
#2 - Copied the id_dsa.pub from my first CN to my second CN at the
/var/lib/nova/.ssh location;
#3 - I'm sure I don't have te directive "AllowUsers" in my
/etc/ssh/sshd_config
#4 - At my two CN I have inside my /etc/passwd,
nova:x:123:131::/var/lib/nova:/bin/sh

Another questions, do* *I need to copy the .pub key to my controller node
too? And, do I need to create one key to each compute node and copy the
.pub to another one, or just create one key and copy the .pub?

I'm making some mass with the key's thing :(

Thank you all.

Guilherme.


2013/8/15 Razique Mahroua <razique.mahroua at gmail.com>

> 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.mahroua at gmail.com
> Tel : +33 9 72 37 94 15
>
>
> Le 15 août 2013 à 09:39, james <jshaw90 at 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.mnm at 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 S*tderr:
>> '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 at ruf
>>
>>
>> On Thu, Aug 15, 2013 at 4:52 AM, Guilherme Russi <
>> luisguilherme.cr at 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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>>
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