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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi
</span>Scott,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks for the reply.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m not an experienced developer, so , could you explain more about “Perhaps the live_migrate task is passing the incorrect context in for this database query?” ?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Here is what I understand.<o:p></o:p></p>
<p class="MsoNormal">The issue is basically caused by <span style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white">@require_admin_context for
</span>db.service_get_by_compute_host()<span style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white">.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Then, should this a bug ?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Why “nova migrate” command do not need to check compute host ?<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Consolas;color:#333333;background:white"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks.<o:p></o:p></p>
<p class="MsoNormal">-chen<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Scott Devoid [mailto:devoid@anl.gov]
<br>
<b>Sent:</b> Thursday, June 26, 2014 9:34 AM<br>
<b>To:</b> Li, Chen<br>
<b>Cc:</b> Sushma Korati; openstack@lists.openstack.org<br>
<b>Subject:</b> Re: [Openstack] How can I enable operation for non-admin user<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Hi Li,<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">The problem here is that db.service_get_by_compute_host() requires admin context. [1] The live_migrate command needs to check that both hosts have a running nova-compute service before it begins migration. Perhaps the live_migrate task
is passing the incorrect context in for this database query? [2] I would think that conductor should be running under it's own context and not the caller's context? (Devs?)<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">And before someone comments that migration should always be *admin-only*, I'll point out that there are legitimate reasons an operator might want to give someone migrate permissions and not all admin permissions.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">~ Scott<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">[1] <a href="https://github.com/openstack/nova/blob/master/nova/db/sqlalchemy/api.py#L485">https://github.com/openstack/nova/blob/master/nova/db/sqlalchemy/api.py#L485</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">[2] <a href="https://github.com/openstack/nova/blob/master/nova/conductor/tasks/live_migrate.py#L87">https://github.com/openstack/nova/blob/master/nova/conductor/tasks/live_migrate.py#L87</a><o:p></o:p></p>
</div>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
<div>
<p class="MsoNormal">On Tue, Jun 24, 2014 at 9:11 PM, Li, Chen <<a href="mailto:chen.li@intel.com" target="_blank">chen.li@intel.com</a>> wrote:<o:p></o:p></p>
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">Hi
</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Sushma,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Thanks for the reply.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Well, edit /etc/nova/policy.json do works for command “nova migrate”.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">But when I run command “nova live-migration”, I still get errors, in /var/log/nova/conductor.log:</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:07:23.897 115385 INFO oslo.messaging._drivers.impl_qpid [-] Connected to AMQP server on
<a href="http://192.168.40.122:5672" target="_blank">192.168.40.122:5672</a></span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 ERROR nova.conductor.manager [req-63f0a004-ef69-47f4-aefb-e0fa194d99b9 fa970646fa92442fa14b2b759cf381a6 2eb6bd3a69ad454a90489dd12b9cdf3b]
Migration of instance 446d96d7-2073-46ac-b40c-0f167fbd04b2 to host None unexpectedly failed.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager Traceback (most recent call last):</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager File "/usr/lib/python2.6/site-packages/nova/conductor/manager.py", line 757, in _live_migrate</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager block_migration, disk_over_commit)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager File "/usr/lib/python2.6/site-packages/nova/conductor/tasks/live_migrate.py", line 191,
in execute</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager return task.execute()</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager File "/usr/lib/python2.6/site-packages/nova/conductor/tasks/live_migrate.py", line 56,
in execute</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager self._check_host_is_up(self.source)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager File "/usr/lib/python2.6/site-packages/nova/conductor/tasks/live_migrate.py", line 87,
in _check_host_is_up</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager service = db.service_get_by_compute_host(self.context, host)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager File "/usr/lib/python2.6/site-packages/nova/db/api.py", line 129, in service_get_by_compute_host</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager return IMPL.service_get_by_compute_host(context, host)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager File "/usr/lib/python2.6/site-packages/nova/db/sqlalchemy/api.py", line 145, in wrapper</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager nova.context.require_admin_context(args[0])</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager File "/usr/lib/python2.6/site-packages/nova/context.py", line 195, in require_admin_context</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager raise exception.AdminRequired()</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager AdminRequired: User does not have admin privileges</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.221 115395 TRACE nova.conductor.manager</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 ERROR oslo.messaging.rpc.dispatcher [-] Exception during message handling: Migration error: User does not have admin privileges</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher Traceback (most recent call last):</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 133,
in _dispatch_and_reply</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher incoming.message))</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 176,
in _dispatch</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher return self._do_dispatch(endpoint, method, ctxt, args)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 122,
in _do_dispatch</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher result = getattr(endpoint, method)(ctxt, **new_args)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/server.py", line 139,
in inner</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher return func(*args, **kwargs)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib/python2.6/site-packages/nova/conductor/manager.py", line 681, in
migrate_server</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher block_migration, disk_over_commit)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib/python2.6/site-packages/nova/conductor/manager.py", line 783, in
_live_migrate</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher raise exception.MigrationError(reason=ex)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher MigrationError: Migration error: User does not have admin privileges</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.226 115395 TRACE oslo.messaging.rpc.dispatcher</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.228 115395 ERROR oslo.messaging._drivers.common [-] Returning exception Migration error: User does not have admin privileges to caller</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">2014-06-25 02:08:59.228 115395 ERROR oslo.messaging._drivers.common [-] ['Traceback (most recent call last):\n', ' File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py",
line 133, in _dispatch_and_reply\n incoming.message))\n', ' File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 176, in _dispatch\n return self._do_dispatch(endpoint, method, ctxt, args)\n', ' File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py",
line 122, in _do_dispatch\n result = getattr(endpoint, method)(ctxt, **new_args)\n', ' File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/server.py", line 139, in inner\n return func(*args, **kwargs)\n', ' File "/usr/lib/python2.6/site-packages/nova/conductor/manager.py",
line 681, in migrate_server\n block_migration, disk_over_commit)\n', ' File "/usr/lib/python2.6/site-packages/nova/conductor/manager.py", line 783, in _live_migrate\n raise exception.MigrationError(reason=ex)\n', 'MigrationError: Migration error: User
does not have admin privileges\n']</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D"> </span><o:p></o:p></p>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Sushma Korati [mailto:<a href="mailto:sushma_korati@persistent.co.in" target="_blank">sushma_korati@persistent.co.in</a>]
<br>
<b>Sent:</b> Tuesday, June 24, 2014 4:43 PM<br>
<b>To:</b> Li, Chen; <a href="mailto:openstack@lists.openstack.org" target="_blank">
openstack@lists.openstack.org</a><br>
<b>Subject:</b> RE: How can I enable operation for non-admin user</span><o:p></o:p></p>
</div>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<div>
<p style="background:white"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> </span><o:p></o:p></p>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt;background:white">
<span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Hi Li,<br>
<br>
As fas as I know to migrate an instance you'll need admin priviliges.<br>
But if you want to allow this operation for normal user then might try editing /etc/nova/policy.json file and give privileges.
<br>
<br>
File: /etc/nova/policy.json <br>
change "compute_extension:admin_actions:migrate": "rule:admin_api" to<br>
"compute_extension:admin_actions:migrate": "<strong><span style="font-family:"Tahoma","sans-serif"">rule:admin_or_owner</span></strong>"<br>
<br>
<br>
Regards,<br>
Sushma </span><o:p></o:p></p>
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<b><span style="color:black">From:</span></b><span style="color:black"> Li, Chen <<a href="mailto:chen.li@intel.com" target="_blank">chen.li@intel.com</a>><br>
<b>Sent:</b> Tuesday, June 24, 2014 1:44 PM<br>
<b>To:</b> <a href="mailto:openstack@lists.openstack.org" target="_blank">openstack@lists.openstack.org</a><br>
<b>Subject:</b> [Openstack] How can I enable operation for non-admin user</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#282828">
</span><o:p></o:p></p>
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<span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#282828"> </span><o:p></o:p></p>
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<span style="color:#282828">Hi list,</span><o:p></o:p></p>
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<span style="color:#282828"> </span><o:p></o:p></p>
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<span style="color:#282828">I’m working under CentOS + icehouse.</span><o:p></o:p></p>
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<span style="color:#282828"> </span><o:p></o:p></p>
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<span style="color:#282828">While, I have an non-admin user “demo”, and I can work under this this user with basic operations.</span><o:p></o:p></p>
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<span style="color:#282828">Everything works well.</span><o:p></o:p></p>
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<span style="color:#282828"> </span><o:p></o:p></p>
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<span style="color:#282828">But, I also hope this user can do some admin operations, such as migrate and so on, because currently when I run command:</span><o:p></o:p></p>
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<span style="color:#282828">nova migrate ${my_instance}</span><o:p></o:p></p>
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<span style="color:#282828">I get output:</span><o:p></o:p></p>
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<span style="color:#282828">ERROR: Policy doesn't allow compute_extension:admin_actions:migrate to be performed. (HTTP 403) (Request-ID: req-698ad5b5-f1fe-48fc-b81f-a765020bf89f)</span><o:p></o:p></p>
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<span style="color:#282828"> </span><o:p></o:p></p>
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<span style="color:#282828">Anyone can help me ?</span><o:p></o:p></p>
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<span style="color:#282828"> </span><o:p></o:p></p>
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<span style="color:#282828">Thanks.</span><o:p></o:p></p>
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<span style="color:#282828">-chen</span><o:p></o:p></p>
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