Make sure nova can not root.
Remo
Inviato da iPhone ()
> Il giorno 02/mar/2015, alle ore 08:21, somshekar kadam
> <som_ka...@yahoo.co.in> ha scritto:
>
> Hello John,
> Thanks for all your valuable inputs.
> I had missed these configuration. Hope these configs mentioned below will be
> useful for others who are trying out live migration.
>
> 1. force_config_drive = none , otherwise it was giving error.
> 2. allow_migrate_to_same_host = False
> allow_resize_to_same_host = False
>
> 3. set proper cpu mode as below
> cpu_mode = custom
> cpu_model = Nehalem
> virt_type = kvm
>
> Now I am able to make normal migration working fine, from one host to
> another.
>
> When I try with live migration with block-migration, its failing for not
> getting proper host key verification ,,
> I am looking into it. I have shared keys proper I am able to ssh to-fro host
> nodes using passwordless ssh.
> no clue right now.
>
> error log
> ------------------
> [[01;31mLive Migration fa ilure: operation failed: Failed to connect to
> remote libvirt URI qemu+ssh://stack@celestial8/
> system: Cannot recv data: Host key verifica tion failed.: Connection
> reset by peer^[[00m
>
>
> on thread notification^[[00m ^[[00;33mfrom (pid=8953) thread_finished
> /opt/stack/nova/nova/virt/ libvirt/driver.py:5638^[[00m
> 270370 Traceback (most recent call last):
> 270371 File "/usr/local/lib/python2.7/ dist-packages/eventlet/hubs/
> hub.py", line 457, in fire_timers
> 270372 timer()
> 270373 File "/usr/local/lib/python2.7/ dist-packages/eventlet/hubs/
> timer.py", line 58, in __call__
> 270374 cb(*args, **kw)
> 270375 File "/usr/local/lib/python2.7/ dist-packages/eventlet/event. py",
> line 168, in _do_send
> 270376 waiter.switch(result)
> 270377 File "/usr/local/lib/python2.7/ dist-packages/eventlet/
> greenthread.py", line 214, in main
> 270378 result = function(*args, **kwargs)
> 270379 File "/opt/stack/nova/nova/virt/ libvirt/driver.py", line 5435, in
> _live_migration_operation
> 270380 instance=instance)
> 270381 File "/usr/local/lib/python2.7/ dist-packages/oslo_utils/
> excutils.py", line 82, in __exit__
> 270382 six.reraise(self.type_, self.value, self.tb)
> 270383 File "/opt/stack/nova/nova/virt/ libvirt/driver.py", line 5404, in
> _live_migration_operation
> 270384 CONF.libvirt.live_migration_ bandwidth)
> 270385 File "/usr/local/lib/python2.7/ dist-packages/eventlet/tpool. py",
> line 183, in doit
> 270386 result = proxy_call(self._autowrap, f, *args, **kwargs)
> 270387 File "/usr/local/lib/python2.7/ dist-packages/eventlet/tpool. py",
> line 141, in proxy_call
> 270388 rv = execute(f, *args, **kwargs)
> 270389 File "/usr/local/lib/python2.7/ dist-packages/eventlet/tpool. py",
> line 122, in execute
> 270390 six.reraise(c, e, tb)
> 270391 File "/usr/local/lib/python2.7/ dist-packages/eventlet/tpool. py",
> line 80, in tworker
> 270392 rv = meth(*args, **kwargs)
> 270393 File "/usr/lib/python2.7/dist- packages/libvirt.py", line 1582, in
> migrateToURI2
> 270394 if ret == -1: raise libvirtError ('virDomainMigrateToURI2()
> failed', dom=self)
> 270395 libvirtError: operation failed: Failed to connect to remote libvirt
> URI qemu+ssh://stack@celestial8/ system: Cannot recv data: Host key v
> erification failed.: Connection reset by peer
> @
> -----
>
>
>
>
> Regards
> Neelu
>
>
> On Friday, 27 February 2015 8:09 PM, somshekar kadam <som_ka...@yahoo.co.in>
> wrote:
>
>
> Have done the same configs as mentioned in above thread links for libvirt and
> nova.conf.
>
>
> Regards
> Neelu
>
>
> On Friday, 27 February 2015 8:07 PM, somshekar kadam <som_ka...@yahoo.co.in>
> wrote:
>
>
> John, your patch is in the mainline now. I have tested it. Not sure what is
> the thing I am missing
> I have specified cpu model none and even tried setting cpu mode custom also
> and model kvm64.
>
> I am getting below error on live migration.
>
> error log
> ----
> Remote error: libvirtError Requested operation is not valid: no CPU model
> specified [u’Traceback (most recent call last):\n’, u’ File
> “/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py”,
> line 142, in _dispatch_and_reply\n executo
> Code
> 500
> Details
> File “/opt/stack/nova/nova/conductor/manager.py”, line 606, in _live_migrate
> block_migration, disk_over_commit) File
> “/opt/stack/nova/nova/conductor/tasks/live_migrate.py”, line 194, in execute
> return task.execute() File
> “/opt/stack/nova/nova/conductor/tasks/live_migrate.py”, line 62, in execute
> self._check_requested_destination() File
> “/opt/stack/nova/nova/conductor/tasks/live_migrate.py”, line 100, in
> _check_requested_destination
> self._call_livem_checks_on_host(self.destination) File
> “/opt/stack/nova/nova/conductor/tasks/live_migrate.py”, line 142, in
> _call_livem_checks_on_host destination, self.block_migration,
> self.disk_over_commit) File “/opt/stack/nova/nova/compute/rpcapi.py”, line
> 391, in check_can_live_migrate_destination disk_over_commit=disk_over_commit)
> File “/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/client.py”,
> line 156, in call retry=self.retry) File
> “/usr/local/lib/python2.7/dist-packages/oslo_messaging/transport.py”, line
> 90, in _send timeout=timeout, retry=retry) File
> “/usr/local/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py”,
> line 417, in send retry=retry) File
> “/usr/local/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py”,
> line 408, in _send raise result
> Created
> --------------------
>
> debug log
> ---------------
> DEBUG (shell:803) Live migration of instance 477e8963-aadf-4dc7-b26f-
> f6e9332dd33b to host celestial5 failed (HTTP 500) (Request-ID:
> req-7973edbc-8844-41c5-926a- 9f5e7cee62f2)
> Traceback (most recent call last):
> File "/usr/local/lib/python2.7/ dist-packages/novaclient/ shell.py", line
> 800, in main
> OpenStackComputeShell().main( argv)
> File "/usr/local/lib/python2.7/ dist-packages/novaclient/ shell.py", line
> 730, in main
> args.func(self.cs, args)
> File "/usr/local/lib/python2.7/ dist-packages/novaclient/v1_1/ shell.py",
> line 3001, in do_live_migration
> args.disk_over_commit)
> File "/usr/local/lib/python2.7/ dist-packages/novaclient/v1_1/ servers.py",
> line 344, in live_migrate
> disk_over_commit)
> File "/usr/local/lib/python2.7/ dist-packages/novaclient/v1_1/ servers.py",
> line 1124, in live_migrate
> 'disk_over_commit': disk_over_commit})
> File "/usr/local/lib/python2.7/ dist-packages/novaclient/v1_1/ servers.py",
> line 1240, in _action
> return self.api.client.post(url, body=body)
> File "/usr/local/lib/python2.7/ dist-packages/novaclient/ client.py", line
> 490, in post
> return self._cs_request(url, 'POST', **kwargs)
> File "/usr/local/lib/python2.7/ dist-packages/novaclient/ client.py", line
> 465, in _cs_request
> resp, body = self._time_request(url, method, **kwargs)
> File "/usr/local/lib/python2.7/ dist-packages/novaclient/ client.py", line
> 439, in _time_request
> resp, body = self.request(url, method, **kwargs)
> File "/usr/local/lib/python2.7/ dist-packages/novaclient/ client.py", line
> 433, in request
> raise exceptions.from_response(resp, body, url, method)
> ClientException: Live migration of instance 477e8963-aadf-4dc7-b26f-
> f6e9332dd33b to host celestial5 failed (HTTP 500) (Request-ID:
> req-7973edbc-8844-41c5-926a- 9f5e7cee62f2)
> ERROR (ClientException): Live migration of instance 477e8963-aadf-4dc7-b26f-
> f6e9332dd33b to host celestial5 failed (HTTP 500) (Request-ID:
> req-7973edbc-8844-41c5-926a- 9f5e7cee62f2)
> ----------------------
>
> Regards
> Neelu
>
>
> On Thursday, 26 February 2015 8:21 PM, John Griffith
> <john.griff...@solidfire.com> wrote:
>
>
>
>
> On Thu, Feb 26, 2015 at 7:07 AM, somshekar kadam <som_ka...@yahoo.co.in>
> wrote:
> First of all thanks for quick reply.
> Documentation does not mention much about Volume-backed live migration.
> Is it tested, I mean supported and working.
> I will try Block live migration as no storage is required.
>
>
> Regards
> Neelu
>
>
> On Thursday, 26 February 2015 7:13 PM, Robert van Leeuwen
> <robert.vanleeu...@spilgames.com> wrote:
>
>
> > Is the Live Migration of VMs even without shared storage supported in
> > Openstack now.
> > If yes is there any document for the same.
>
>
> Wel, depends on what you call "supported".
> Yes, it is possible.
> Will it always work? Probably not until you look at the bugs below.
> They have been fixed recently but they might not be merged with the version
> you are running:
> https://bugs.launchpad.net/nova/+bug/1270825
> https://bugs.launchpad.net/nova/+bug/1082414
>
> There might be more issues but I hit the ones mentioned above.
> Have a look at the docs to configure it:
> http://docs.openstack.org/admin-guide-cloud/content/section_configuring-compute-migrations.html
>
> Cheers,
> Robert van Leeuwen
>
>
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>
>
> It's dated and getting the patches backported has proven to take forever, but
> I did a write up and testing on this a while back [1]. Should still be
> accurate.
>
> Thanks,
> John
>
> [1]:
> https://griffithscorner.wordpress.com/2014/12/08/openstack-live-migration-with-cinder-backed-instances/
>
>
>
>
>
>
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