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[Openstack] [Nova] Instance creation problem


Hi. I'm setting up a Openstack system on the servers of my laboratory.
While I try to create an instance, a problem has occurred!
Instance creation was failed and it seems that libvirt failed to attaching
the vif to the instance.
When I create a virtual machine by using virsh tool (libvirt) manually,
there was no problem.

I add the logs as follows:

1. controller node

> "/var/log/nova/nova-conductor.log"
> 2018-11-28 21:18:13.033 2657 ERROR nova.scheduler.utils
> [req-291fdb2d-fa94-461c-9f5f-68d340791c77 3367829d9c004653bdc9102443bd4736
> 47270e4fb58045dc88b6f0f736286ffc - default default] [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304] Error from last host: node1 (node
> node1): [u'Traceback (most recent call last):\n', u'  File
> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1840, in
> _do_build_and_run_instance\n    filter_properties, request_spec)\n', u'
> File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2120,
> in _build_and_run_instance\n    instance_uuid=instance.uuid,
> reason=six.text_type(e))\n', u"RescheduledException: Build of instance
> 9c2d08f3-0680-4709-a64d-ae1729a11304 was re-scheduled: internal error:
> libxenlight failed to create new domain 'instance-00000008'\n"]
> 2018-11-28 21:18:13.033 2657 WARNING nova.scheduler.utils
> [req-291fdb2d-fa94-461c-9f5f-68d340791c77 3367829d9c004653bdc9102443bd4736
> 47270e4fb58045dc88b6f0f736286ffc - default default] Failed to
> compute_task_build_instances: Exceeded maximum number of retries. Exceeded
> max scheduling attempts 3 for instance
> 9c2d08f3-0680-4709-a64d-ae1729a11304. Last exception: internal error:
> libxenlight failed to create new domain 'instance-00000008':
> MaxRetriesExceeded: Exceeded maximum number of retries. Exceeded max
> scheduling attempts 3 for instance 9c2d08f3-0680-4709-a64d-ae1729a11304.
> Last exception: internal error: libxenlight failed to create new domain
> 'instance-00000008'
> 2018-11-28 21:18:13.034 2657 WARNING nova.scheduler.utils
> [req-291fdb2d-fa94-461c-9f5f-68d340791c77 3367829d9c004653bdc9102443bd4736
> 47270e4fb58045dc88b6f0f736286ffc - default default] [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304] Setting instance to ERROR state.:
> MaxRetriesExceeded: Exceeded maximum number of retries. Exceeded max
> scheduling attempts 3 for instance 9c2d08f3-0680-4709-a64d-ae1729a11304.
> Last exception: internal error: libxenlight failed to create new domain
> 'instance-00000008'
> 2018-11-28 21:18:13.067 2657 WARNING oslo_config.cfg
> [req-291fdb2d-fa94-461c-9f5f-68d340791c77 3367829d9c004653bdc9102443bd4736
> 47270e4fb58045dc88b6f0f736286ffc - default default] Option "url" from group
> "neutron" is deprecated for removal (Endpoint lookup uses the service
> catalog via common keystoneauth1 Adapter configuration options. In the
> current release, "url" will override this behavior, but will be ignored
> and/or removed in a future release. To achieve the same result, use the
> endpoint_override option instead.).  Its value may be silently ignored in
> the future.



> "/var/log/neutron/neutron-linuxbridge-agent.log"
> 2018-11-28 17:41:45.593 2476 INFO
> neutron.plugins.ml2.drivers.linuxbridge.agent.linuxbridge_neutron_agent [-]
> Interface mappings: {'provider': 'enp1s0f1'}
> 2018-11-28 17:41:45.593 2476 INFO
> neutron.plugins.ml2.drivers.linuxbridge.agent.linuxbridge_neutron_agent [-]
> Bridge mappings: {}
> 2018-11-28 17:41:45.624 2476 INFO
> neutron.plugins.ml2.drivers.linuxbridge.agent.linuxbridge_neutron_agent [-]
> Agent initialized successfully, now running...
> 2018-11-28 17:41:45.901 2476 INFO
> neutron.plugins.ml2.drivers.agent._common_agent
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] RPC agent_id:
> lba0369fa2714a
> 2018-11-28 17:41:45.907 2476 INFO neutron.agent.agent_extensions_manager
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Loaded agent
> extensions: []
> 2018-11-28 17:41:46.121 2476 INFO
> neutron.plugins.ml2.drivers.agent._common_agent
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Linux bridge agent
> Agent RPC Daemon Started!
> 2018-11-28 17:41:46.122 2476 INFO
> neutron.plugins.ml2.drivers.agent._common_agent
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Linux bridge agent
> Agent out of sync with plugin!
> 2018-11-28 17:41:46.512 2476 INFO
> neutron.plugins.ml2.drivers.linuxbridge.agent.arp_protect
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Clearing orphaned ARP
> spoofing entries for devices []
> 2018-11-28 17:41:47.020 2476 INFO
> neutron.plugins.ml2.drivers.linuxbridge.agent.arp_protect
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Clearing orphaned ARP
> spoofing entries for devices []
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent [-] Failed reporting
> state!: MessagingTimeout: Timed out waiting for a reply to message ID
> 20ef587240864120b878559ab821adbf
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent Traceback (most recent call
> last):
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent   File
> "/usr/lib/python2.7/dist-packages/neutron/plugins/ml2/drivers/agent/_common_agent.py",
> line 128, in _report_state
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent     True)
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent   File
> "/usr/lib/python2.7/dist-packages/neutron/agent/rpc.py", line 93, in
> report_state
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent     return method(context,
> 'report_state', **kwargs)
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent   File
> "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/client.py", line 174,
> in call
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent     retry=self.retry)
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent   File
> "/usr/lib/python2.7/dist-packages/oslo_messaging/transport.py", line 131,
> in _send
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent     timeout=timeout,
> retry=retry)
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent   File
> "/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py",
> line 559, in send
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent     retry=retry)
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent   File
> "/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py",
> line 548, in _send
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent     result =
> self._waiter.wait(msg_id, timeout)
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent   File
> "/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py",
> line 440, in wait
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent     message =
> self.waiters.get(msg_id, timeout=timeout)
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent   File
> "/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py",
> line 328, in get
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent     'to message ID %s' %
> msg_id)
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent MessagingTimeout: Timed out
> waiting for a reply to message ID 20ef587240864120b878559ab821adbf
> 2018-11-28 17:42:45.981 2476 ERROR
> neutron.plugins.ml2.drivers.agent._common_agent
> 2018-11-28 17:42:45.986 2476 WARNING oslo.service.loopingcall [-] Function
> 'neutron.plugins.ml2.drivers.agent._common_agent.CommonAgentLoop._report_state'
> run outlasted interval by 30.07 sec
> 2018-11-28 17:42:46.055 2476 INFO
> neutron.plugins.ml2.drivers.agent._common_agent [-] Linux bridge agent
> Agent has just been revived. Doing a full sync.
> 2018-11-28 17:42:46.156 2476 INFO
> neutron.plugins.ml2.drivers.agent._common_agent
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Linux bridge agent
> Agent out of sync with plugin!
> 2018-11-28 17:43:40.189 2476 INFO neutron.agent.securitygroups_rpc
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Preparing filters for
> devices set(['tap4a09374a-7f'])
> 2018-11-28 17:43:40.935 2476 INFO
> neutron.plugins.ml2.drivers.agent._common_agent
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Port tap4a09374a-7f
> updated. Details: {u'profile': {}, u'network_qos_policy_id': None,
> u'qos_policy_id': None, u'allowed_address_pairs': [], u'admin_state_up':
> True, u'network_id': u'87fa0d9c-5ed3-4332-8782-0d4139eed7f3',
> u'segmentation_id': None, u'mtu': 1500, u'device_owner': u'network:dhcp',
> u'physical_network': u'provider', u'mac_address': u'fa:16:3e:ab:0e:84',
> u'device': u'tap4a09374a-7f', u'port_security_enabled': False, u'port_id':
> u'4a09374a-7fa5-42c2-9430-67a0cd65336c', u'fixed_ips': [{u'subnet_id':
> u'e95946a8-070c-42c4-877e-279e6e7acc7e', u'ip_address': u'192.0.10.4'}],
> u'network_type': u'flat'}
> 2018-11-28 17:43:41.124 2476 INFO
> neutron.plugins.ml2.drivers.linuxbridge.agent.arp_protect
> [req-c447894c-9013-4bec-82e4-8b501414184d - - - - -] Skipping ARP spoofing
> rules for port 'tap4a09374a-7f' because it has port security disabled


"/var/log/neutron/neutron-server.log"
> 2018-11-28 17:30:02.130 15995 INFO neutron.pecan_wsgi.hooks.translation
> [req-e7554d70-c84d-46d5-8ff6-a536fb35664c 29a3a16fd2484ee9bed834a3835545af
> 5ebe3484974848b182a381127cb35a22 - default default] GET failed (client
> error): The resource could not be found.
> 2018-11-28 17:30:02.130 15995 INFO neutron.wsgi
> [req-e7554d70-c84d-46d5-8ff6-a536fb35664c 29a3a16fd2484ee9bed834a3835545af
> 5ebe3484974848b182a381127cb35a22 - default default] 10.150.21.183 "GET
> /v2.0/floatingips?fixed_ip_address=192.0.10.10&port_id=8ab0d544-ec5b-4e69-95f4-1f06f7b53bb4
> HTTP/1.1" status: 404  len: 309 time: 0.0072770
> 2018-11-28 17:30:02.167 15995 INFO neutron.wsgi
> [req-a2b5f53b-8992-4178-b0b6-55be9d1a0f32 29a3a16fd2484ee9bed834a3835545af
> 5ebe3484974848b182a381127cb35a22 - default default] 10.150.21.183 "GET
> /v2.0/subnets?id=e95946a8-070c-42c4-877e-279e6e7acc7e HTTP/1.1" status:
> 200  len: 822 time: 0.0341990
> 2018-11-28 17:30:02.199 15995 INFO neutron.wsgi
> [req-9e1a51e9-9ccc-4226-a78f-0420ff95c147 29a3a16fd2484ee9bed834a3835545af
> 5ebe3484974848b182a381127cb35a22 - default default] 10.150.21.183 "GET
> /v2.0/ports?network_id=87fa0d9c-5ed3-4332-8782-0d4139eed7f3&device_owner=network%3Adhcp
> HTTP/1.1" status: 200  len: 1080 time: 0.0300300
> 2018-11-28 17:30:02.584 15995 INFO neutron.notifiers.nova [-] Nova event
> response: {u'status': u'completed', u'tag':
> u'8ab0d544-ec5b-4e69-95f4-1f06f7b53bb4', u'name': u'network-changed',
> u'server_uuid': u'a9afc2d4-f4c9-429b-9773-4de8a3eaefa5', u'code': 200}
> 2018-11-28 17:30:02.628 15995 INFO neutron.wsgi
> [req-73265cf5-5f0d-4217-b716-caa2fb906abf 29a3a16fd2484ee9bed834a3835545af
> 5ebe3484974848b182a381127cb35a22 - default default] 10.150.21.183 "GET
> /v2.0/ports?tenant_id=47270e4fb58045dc88b6f0f736286ffc&device_id=a9afc2d4-f4c9-429b-9773-4de8a3eaefa5
> HTTP/1.1" status: 200  len: 1062 time: 0.0316660
> 2018-11-28 17:30:02.696 15995 INFO neutron.wsgi
> [req-ed53b92c-3033-4b4a-ade4-fdc5a3463e8c 29a3a16fd2484ee9bed834a3835545af
> 5ebe3484974848b182a381127cb35a22 - default default] 10.150.21.183 "GET
> /v2.0/networks?id=87fa0d9c-5ed3-4332-8782-0d4139eed7f3 HTTP/1.1" status:
> 200  len: 872 time: 0.0655539
> 2018-11-28 17:30:02.702 15995 WARNING neutron.pecan_wsgi.controllers.root
> [req-ccd8c9b8-d2cf-40f7-b53b-5936bd0c9a6d 29a3a16fd2484ee9bed834a3835545af
> 5ebe3484974848b182a381127cb35a22 - default default] No controller found
> for: floatingips - returning response code 404: PecanNotFound


2. compute node

> "/var/log/libvirt/libxl/libxl-driver.log"
> 2018-11-28 08:40:31.920+0000: libxl:
> libxl_event.c:681:libxl__ev_xswatch_deregister: remove watch for path
> @releaseDomain: Bad file descriptor
> 2018-11-28 09:57:01.707+0000: libxl:
> libxl_exec.c:118:libxl_report_child_exitstatus: /etc/xen/scripts/vif-bridge
> online [2536] exited with error status 1
> 2018-11-28 09:57:01.708+0000: libxl:
> libxl_device.c:1286:device_hotplug_child_death_cb: script: ip link set
> vif1.0 name tape5a239a8-6e failed
> 2018-11-28 09:57:01.708+0000: libxl:
> libxl_create.c:1522:domcreate_attach_devices: Domain 1:unable to add vif
> devices


"/var/log/xen/xen-hotplug.log"
> RTNETLINK answers: Device or resource busy


"/var/log/nova/nova-compute.log"
> : libvirtError: internal error: libxenlight failed to create new domain
> 'instance-00000008'
> 2018-11-28 21:18:11.350 2384 ERROR nova.virt.libvirt.driver
> [req-b3e761b7-00fa-4930-bd9e-4330f8440c03 48086750fa13420888601964bb6a9d0d
> 5ebe3484974848b182a381127cb35a22 - default default] [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304] Failed to start libvirt guest:
> libvirtError: internal error: libxenlight failed to create new domain
> 'instance-00000008'
> 2018-11-28 21:18:11.352 2384 INFO os_vif
> [req-b3e761b7-00fa-4930-bd9e-4330f8440c03 48086750fa13420888601964bb6a9d0d
> 5ebe3484974848b182a381127cb35a22 - default default] Successfully unplugged
> vif
> VIFBridge(active=False,address=fa:16:3e:6b:e4:b7,bridge_name='brq87fa0d9c-5e',has_traffic_filtering=True,id=484807ca-8c7c-4509-a5f5-ed7e5fd2078f,network=Network(87fa0d9c-5ed3-4332-8782-0d4139eed7f3),plugin='linux_bridge',port_profile=<?>,preserve_on_delete=False,vif_name='tap484807ca-8c')
> 2018-11-28 21:18:11.554 2384 INFO nova.virt.libvirt.driver
> [req-b3e761b7-00fa-4930-bd9e-4330f8440c03 48086750fa13420888601964bb6a9d0d
> 5ebe3484974848b182a381127cb35a22 - default default] [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304] Deleting instance files
> /var/lib/nova/instances/9c2d08f3-0680-4709-a64d-ae1729a11304_del
> 2018-11-28 21:18:11.556 2384 INFO nova.virt.libvirt.driver
> [req-b3e761b7-00fa-4930-bd9e-4330f8440c03 48086750fa13420888601964bb6a9d0d
> 5ebe3484974848b182a381127cb35a22 - default default] [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304] Deletion of
> /var/lib/nova/instances/9c2d08f3-0680-4709-a64d-ae1729a11304_del complete
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager
> [req-b3e761b7-00fa-4930-bd9e-4330f8440c03 48086750fa13420888601964bb6a9d0d
> 5ebe3484974848b182a381127cb35a22 - default default] [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304] Instance failed to spawn:
> libvirtError: internal error: libxenlight failed to create new domain
> 'instance-00000008'
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304] Traceback (most recent call last):
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2251, in
> _build_resources
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     yield resources
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2031, in
> _build_and_run_instance
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]
>  block_device_info=block_device_info)
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 3089,
> in spawn
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     destroy_disks_on_failure=True)
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 5614,
> in _create_domain_and_network
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     destroy_disks_on_failure)
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in
> __exit__
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     self.force_reraise()
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in
> force_reraise
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     six.reraise(self.type_,
> self.value, self.tb)
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 5583,
> in _create_domain_and_network
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]
>  post_xml_callback=post_xml_callback)
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 5502,
> in _create_domain
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     guest.launch(pause=pause)
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/guest.py", line 144, in
> launch
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     self._encoded_xml,
> errors='ignore')
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in
> __exit__
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     self.force_reraise()
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in
> force_reraise
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     six.reraise(self.type_,
> self.value, self.tb)
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/guest.py", line 139, in
> launch
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     return
> self._domain.createWithFlags(flags)
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 186, in doit
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     result =
> proxy_call(self._autowrap, f, *args, **kwargs)
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 144, in
> proxy_call
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     rv = execute(f, *args, **kwargs)
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 125, in execute
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     six.reraise(c, e, tb)
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 83, in tworker
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     rv = meth(*args, **kwargs)
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]   File
> "/usr/lib/python2.7/dist-packages/libvirt.py", line 1092, in createWithFlags
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304]     if ret == -1: raise libvirtError
> ('virDomainCreateWithFlags() failed', dom=self)
> 2018-11-28 21:18:11.614 2384 ERROR nova.compute.manager [instance:
> 9c2d08f3-0680-4709-a64d-ae1729a11304] libvirtError: internal error:
> libxenlight failed to create new domain 'instance-00000008'


Anyone help me please.
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