openstack instance vm_power_state 状态置为 NOSTATE

openstack 上的instance运行正常，但是power_state状态为NOSTATE，导致instance热迁移失败

现象

1、再一次热迁移时候发现迁移时候报以下错误

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# openstack server migrate --live node-53 86487ef4-cc12-4be6-995e-46f5ac093901
Cannot 'os-migrateLive' instance 86487ef4-cc12-4be6-995e-46f5ac093901 while it is in power_state 0 (HTTP 409) (Request-ID: req-6c14e0ee-c3df-42de-873d-9ecc8ad215cc)

2、查看实例，发现虚拟机运行正常，但是 power_state 为 NOSTATE

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# openstack server show 86487ef4-cc12-4be6-995e-46f5ac093901
+-------------------------------------+----------------------------------------------------------------+
| Field                               | Value                                                          |
+-------------------------------------+----------------------------------------------------------------+
| OS-DCF:diskConfig                   | MANUAL                                                         |
| OS-EXT-AZ:availability_zone         | m_cpu+san                                                      |
| OS-EXT-SRV-ATTR:host                | node-27                                                        |
| OS-EXT-SRV-ATTR:hypervisor_hostname | node-27                                                        |
| OS-EXT-SRV-ATTR:instance_name       | instance-000071aa                                              |
| OS-EXT-STS:power_state              | NOSTATE                                                        |
| OS-EXT-STS:task_state               | None                                                           |
| OS-EXT-STS:vm_state                 | active                                                         |
| OS-SRV-USG:launched_at              | 2018-09-21T05:40:36.000000                                     |
| OS-SRV-USG:terminated_at            | None                                                           |
| accessIPv4                          |                                                                |
| accessIPv6                          |                                                                |
| addresses                           | vlan_10.122.44.0/23=10.122.45.53                               |
| config_drive                        | True                                                           |
| created                             | 2018-09-21T05:40:31Z                                           |
| flavor                              | 16-64-100 (1cbe4ea1-8a67-4027-afd4-8f31a8b94851)               |
| hostId                              | 2730fa3d62e347ddb67e155f6eed973787a868c82316f7e6ba641b10       |
| id                                  | 86487ef4-cc12-4be6-995e-46f5ac093901                           |
| image                               | lenovo-centos-7-release (b9f8f864-4217-4ac6-a116-62ecfa0fc074) |
| key_name                            | None                                                           |
| name                                | SLP3YM7HRCX                                                    |
| progress                            | 100                                                            |
| project_id                          | e992715df18a417997c068e5f9834b0f                               |
| properties                          |                                                                |
| security_groups                     | name='default'                                                 |
| status                              | ACTIVE                                                         |
| updated                             | 2019-10-09T07:58:58Z                                           |
| user_id                             | af518aeb935c4d258f8cb7d302c83797                               |
| volumes_attached                    | id='a821856b-409f-4e6e-becd-eb4b2344c7d8'                      |
+-------------------------------------+----------------------------------------------------------------+

查找原因

列出该虚拟机的历史操作

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# nova instance-action-list 86487ef4-cc12-4be6-995e-46f5ac093901
+----------------+------------------------------------------+---------+----------------------------+
| Action         | Request_ID                               | Message | Start_Time                 |
+----------------+------------------------------------------+---------+----------------------------+
| create         | req-4d01a466-ce7a-48a9-b575-e129b61bcc30 | -       | 2018-09-21T05:40:30.000000 |
| live-migration | req-2d93bc73-e43f-4ca6-88fc-a6ad1a4021a6 | -       | 2018-09-21T05:44:47.000000 |
| live-migration | req-7fcbfb15-7e3c-471d-8ea5-020d438d23c3 | -       | 2019-03-24T13:00:30.000000 |
| live-migration | req-2b009c4f-caef-4d90-81fd-d480c1b9efad | Error   | 2019-10-09T07:00:13.000000 |
| live-migration | req-b364724b-6b28-4d5f-8f14-05d1c4abeceb | Error   | 2019-10-09T07:07:37.000000 |
| live-migration | req-8669d3b1-e57e-4b35-8d40-a110b64f47c8 | Error   | 2019-10-09T07:29:13.000000 |
| live-migration | req-ecec98ca-3777-4ca3-afcd-83e36381e038 | Error   | 2019-10-09T07:55:12.000000 |
| live-migration | req-6378f839-89c0-43c0-8a65-40e5b775283c | Error   | 2019-10-09T07:58:14.000000 |
| live-migration | req-e966caa7-06e5-4a29-a371-517d98c37121 | Error   | 2019-10-09T07:58:58.000000 |
| live-migration | req-6c14e0ee-c3df-42de-873d-9ecc8ad215cc | Error   | 2019-10-09T08:31:47.000000 |
+----------------+------------------------------------------+---------+----------------------------+

列出该实例的迁移记录

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# nova  migration-list|grep 86487ef4-cc12-4be6-995e-46f5ac093901
| 84892 | -           | -         | node-27        | node-29            | -            | error         | 86487ef4-cc12-4be6-995e-46f5ac093901 | 189        | 189        | 2019-10-09T07:07:37.000000 | 2019-10-09T07:07:37.000000 | live-migration |
| 54307 | -           | -         | node-27        | node-53            | -            | error         | 86487ef4-cc12-4be6-995e-46f5ac093901 | 189        | 189        | 2019-03-24T13:00:30.000000 | 2019-03-24T17:10:10.000000 | live-migration |
| 84904 | -           | -         | node-27        | node-53            | -            | error         | 86487ef4-cc12-4be6-995e-46f5ac093901 | 189        | 189        | 2019-10-09T07:29:13.000000 | 2019-10-09T07:29:13.000000 | live-migration |
| 84913 | -           | -         | node-27        | node-53            | -            | error         | 86487ef4-cc12-4be6-995e-46f5ac093901 | 189        | 189        | 2019-10-09T07:55:12.000000 | 2019-10-09T07:55:12.000000 | live-migration |
| 84919 | -           | -         | node-27        | node-53            | -            | error         | 86487ef4-cc12-4be6-995e-46f5ac093901 | 189        | 189        | 2019-10-09T07:58:14.000000 | 2019-10-09T07:58:14.000000 | live-migration |
| 84922 | -           | -         | node-27        | node-53            | -            | error         | 86487ef4-cc12-4be6-995e-46f5ac093901 | 189        | 189        | 2019-10-09T07:58:58.000000 | 2019-10-09T07:58:58.000000 | live-migration |
| 84931 | -           | -         | node-27        | node-53            | -            | error         | 86487ef4-cc12-4be6-995e-46f5ac093901 | 189        | 189        | 2019-10-09T08:31:47.000000 | 2019-10-09T08:31:47.000000 | live-migration |
| 84889 | -           | -         | node-27        | node-89            | -            | error         | 86487ef4-cc12-4be6-995e-46f5ac093901 | 189        | 189        | 2019-10-09T07:00:13.000000 | 2019-10-09T07:00:13.000000 | live-migration |
| 42241 | -           | -         | node-33        | node-27            | -            | completed     | 86487ef4-cc12-4be6-995e-46f5ac093901 | 189        | 189        | 2018-09-21T05:44:48.000000 | 2018-09-21T05:45:13.000000 | live-migration |
可以看到该实例从node-27节点迁移到node-85、node-53、node-29节点均为迁移成功
查看instance所在的节点
# ssh node-27
[email protected]:~# virsh list --all|grep instance-000071aa 
[email protected]:~# exit
logout
Connection to node-27 closed.
# ssh node-53
[email protected]:~#  virsh list --all|grep instance-000071aa
 91    instance-000071aa              running
[email protected]:~# exit
logout
Connection to node-53 closed.
# openstack server show 86487ef4-cc12-4be6-995e-46f5ac093901
+-------------------------------------+----------------------------------------------------------------+
| Field                               | Value                                                          |
+-------------------------------------+----------------------------------------------------------------+
| OS-DCF:diskConfig                   | MANUAL                                                         |
| OS-EXT-AZ:availability_zone         | m_cpu+san                                                      |
| OS-EXT-SRV-ATTR:host                | node-27                                                        |
| OS-EXT-SRV-ATTR:hypervisor_hostname | node-27                                                        |
| OS-EXT-SRV-ATTR:instance_name       | instance-000071aa                                              |
| OS-EXT-STS:power_state              | NOSTATE                                                        |
| OS-EXT-STS:task_state               | None                                                           |
| OS-EXT-STS:vm_state                 | active                                                         |
| OS-SRV-USG:launched_at              | 2018-09-21T05:40:36.000000                                     |
| OS-SRV-USG:terminated_at            | None                                                           |
| accessIPv4                          |                                                                |
| accessIPv6                          |                                                                |
| addresses                           | vlan_10.122.44.0/23=10.122.45.53                               |
| config_drive                        | True                                                           |
| created                             | 2018-09-21T05:40:31Z                                           |
| flavor                              | 16-64-100 (1cbe4ea1-8a67-4027-afd4-8f31a8b94851)               |
| hostId                              | 2730fa3d62e347ddb67e155f6eed973787a868c82316f7e6ba641b10       |
| id                                  | 86487ef4-cc12-4be6-995e-46f5ac093901                           |
| image                               | lenovo-centos-7-release (b9f8f864-4217-4ac6-a116-62ecfa0fc074) |
| key_name                            | None                                                           |
| name                                | SLP3YM7HRCX                                                    |
| progress                            | 100                                                            |
| project_id                          | e992715df18a417997c068e5f9834b0f                               |
| properties                          |                                                                |
| security_groups                     | name='default'                                                 |
| status                              | ACTIVE                                                         |
| updated                             | 2019-10-09T08:31:47Z                                           |
| user_id                             | af518aeb935c4d258f8cb7d302c83797                               |
| volumes_attached                    | id='a821856b-409f-4e6e-becd-eb4b2344c7d8'                      |
+-------------------------------------+----------------------------------------------------------------+
[email protected]:~# mysql -unova -pnova
MariaDB [(none)]> select * from nova.instances where uuid='86487ef4-cc12-4be6-995e-46f5ac093901'\G;
*************************** 1. row ***************************
              created_at: 2018-09-21 05:40:31
              updated_at: 2019-10-09 08:31:47
              deleted_at: NULL
                      id: 29098
             internal_id: NULL
                 user_id: af518aeb935c4d258f8cb7d302c83797
              project_id: e992715df18a417997c068e5f9834b0f
               image_ref: b9f8f864-4217-4ac6-a116-62ecfa0fc074
               kernel_id: 
              ramdisk_id: 
            launch_index: 0
                key_name: NULL
                key_data: NULL
             power_state: 0
                vm_state: active
               memory_mb: 65536
                   vcpus: 16
                hostname: slp3ym7hrcx
                    host: node-27
               user_data: NULL
          reservation_id: r-o8dr8ibn
             launched_at: 2018-09-21 05:40:36
           terminated_at: NULL
            display_name: SLP3YM7HRCX
     display_description: SLP3YM7HRCX
       availability_zone: no_san
                  locked: 0
                 os_type: NULL
             launched_on: node-33
        instance_type_id: 189
                 vm_mode: NULL
                    uuid: 86487ef4-cc12-4be6-995e-46f5ac093901
            architecture: NULL
        root_device_name: /dev/vda
            access_ip_v4: NULL
            access_ip_v6: NULL
            config_drive: True
              task_state: NULL
default_ephemeral_device: NULL
     default_swap_device: NULL
                progress: 100
        auto_disk_config: 0
      shutdown_terminate: 0
       disable_terminate: 0
                 root_gb: 100
            ephemeral_gb: 0
               cell_name: NULL
                    node: node-27
                 deleted: 0
               locked_by: NULL
                 cleaned: 1
      ephemeral_key_uuid: NULL
1 row in set (0.00 sec)
ERROR: No query specified

发现实际instance启动在node-53节点上，但是数据库记录在node-27节点上

manager.py 捕获到 InstanceNotFound 设置 vm_power_state=NOSTATE

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/usr/lib/python2.7/dist-packages/nova/compute/manager.py
    def _query_driver_power_state_and_sync(self, context, db_instance):
        if db_instance.task_state is not None:
            LOG.info(_LI("During sync_power_state the instance has a "
                         "pending task (%(task)s). Skip."),
                     {'task': db_instance.task_state}, instance=db_instance)
            return
        # No pending tasks. Now try to figure out the real vm_power_state.
        try:
            vm_instance = self.driver.get_info(db_instance)
            vm_power_state = vm_instance.state
        except exception.InstanceNotFound:         # 可以看到如果InstanceNotFound
            vm_power_state = power_state.NOSTATE   # power_state设置为NOSTATE
        # Note(maoy): the above get_info call might take a long time,
        # for example, because of a broken libvirt driver.
        try:
            self._sync_instance_power_state(context,
                                            db_instance,
                                            vm_power_state,
                                            use_slave=True)
        except exception.InstanceNotFound:
            # NOTE(hanlind): If the instance gets deleted during sync,
            # silently ignore.
            pass

得到原因

由于之前 migrate ERROR 导致 instance 实际启动的节点和数据库记录的节点不一致，comoute 通过 manager.py 捕获到 InstanceNotFound， 所以把 vm_power_state 状态置为 NOSTATE

解决方案

更新数据库，将数据库中的instance对应的host、node更新成实际instance启动的节点信息。硬重启虚拟机

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[email protected]:~# mysql -unova -pnova
MariaDB [(none)]> update nova.instances set host='node-53' where uuid='86487ef4-cc12-4be6-995e-46f5ac093901'\G;
Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0
ERROR: No query specified
MariaDB [(none)]> update nova.instances set node='node-53' where uuid='86487ef4-cc12-4be6-995e-46f5ac093901'\G;
Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0
ERROR: No query specified
MariaDB [(none)]> select * from nova.instances where uuid='86487ef4-cc12-4be6-995e-46f5ac093901'\G;
*************************** 1. row ***************************
              created_at: 2018-09-21 05:40:31
              updated_at: 2019-10-09 08:31:47
              deleted_at: NULL
                      id: 29098
             internal_id: NULL
                 user_id: af518aeb935c4d258f8cb7d302c83797
              project_id: e992715df18a417997c068e5f9834b0f
               image_ref: b9f8f864-4217-4ac6-a116-62ecfa0fc074
               kernel_id: 
              ramdisk_id: 
            launch_index: 0
                key_name: NULL
                key_data: NULL
             power_state: 0
                vm_state: active
               memory_mb: 65536
                   vcpus: 16
                hostname: slp3ym7hrcx
                    host: node-53
               user_data: NULL
          reservation_id: r-o8dr8ibn
             launched_at: 2018-09-21 05:40:36
           terminated_at: NULL
            display_name: SLP3YM7HRCX
     display_description: SLP3YM7HRCX
       availability_zone: no_san
                  locked: 0
                 os_type: NULL
             launched_on: node-33
        instance_type_id: 189
                 vm_mode: NULL
                    uuid: 86487ef4-cc12-4be6-995e-46f5ac093901
            architecture: NULL
        root_device_name: /dev/vda
            access_ip_v4: NULL
            access_ip_v6: NULL
            config_drive: True
              task_state: NULL
default_ephemeral_device: NULL
     default_swap_device: NULL
                progress: 100
        auto_disk_config: 0
      shutdown_terminate: 0
       disable_terminate: 0
                 root_gb: 100
            ephemeral_gb: 0
               cell_name: NULL
                    node: node-53
                 deleted: 0
               locked_by: NULL
                 cleaned: 1
      ephemeral_key_uuid: NULL
1 row in set (0.00 sec)
ERROR: No query specified
MariaDB [(none)]> exit
Bye
# openstack server show 86487ef4-cc12-4be6-995e-46f5ac093901
+-------------------------------------+----------------------------------------------------------------+
| Field                               | Value                                                          |
+-------------------------------------+----------------------------------------------------------------+
| OS-DCF:diskConfig                   | MANUAL                                                         |
| OS-EXT-AZ:availability_zone         | no_san                                                         |
| OS-EXT-SRV-ATTR:host                | node-53                                                        |
| OS-EXT-SRV-ATTR:hypervisor_hostname | node-53                                                        |
| OS-EXT-SRV-ATTR:instance_name       | instance-000071aa                                              |
| OS-EXT-STS:power_state              | NOSTATE                                                        |
| OS-EXT-STS:task_state               | None                                                           |
| OS-EXT-STS:vm_state                 | active                                                         |
| OS-SRV-USG:launched_at              | 2018-09-21T05:40:36.000000                                     |
| OS-SRV-USG:terminated_at            | None                                                           |
| accessIPv4                          |                                                                |
| accessIPv6                          |                                                                |
| addresses                           | vlan_10.122.44.0/23=10.122.45.53                               |
| config_drive                        | True                                                           |
| created                             | 2018-09-21T05:40:31Z                                           |
| flavor                              | 16-64-100 (1cbe4ea1-8a67-4027-afd4-8f31a8b94851)               |
| hostId                              | f5274ebe433297bc376a4ce09151591735a04d2b6762280866de2729       |
| id                                  | 86487ef4-cc12-4be6-995e-46f5ac093901                           |
| image                               | lenovo-centos-7-release (b9f8f864-4217-4ac6-a116-62ecfa0fc074) |
| key_name                            | None                                                           |
| name                                | SLP3YM7HRCX                                                    |
| progress                            | 100                                                            |
| project_id                          | e992715df18a417997c068e5f9834b0f                               |
| properties                          |                                                                |
| security_groups                     | name='default'                                                 |
| status                              | ACTIVE                                                         |
| updated                             | 2019-10-09T08:31:47Z                                           |
| user_id                             | af518aeb935c4d258f8cb7d302c83797                               |
| volumes_attached                    | id='a821856b-409f-4e6e-becd-eb4b2344c7d8'                      |
+-------------------------------------+----------------------------------------------------------------+
# nova reboot --hard 86487ef4-cc12-4be6-995e-46f5ac093901
# openstack  server show 86487ef4-cc12-4be6-995e-46f5ac093901
+-------------------------------------+----------------------------------------------------------------+
| Field                               | Value                                                          |
+-------------------------------------+----------------------------------------------------------------+
| OS-DCF:diskConfig                   | MANUAL                                                         |
| OS-EXT-AZ:availability_zone         | no_san                                                         |
| OS-EXT-SRV-ATTR:host                | node-53                                                        |
| OS-EXT-SRV-ATTR:hypervisor_hostname | node-53                                                        |
| OS-EXT-SRV-ATTR:instance_name       | instance-000071aa                                              |
| OS-EXT-STS:power_state              | Running                                                        |
| OS-EXT-STS:task_state               | None                                                           |
| OS-EXT-STS:vm_state                 | active                                                         |
| OS-SRV-USG:launched_at              | 2018-09-21T05:40:36.000000                                     |
| OS-SRV-USG:terminated_at            | None                                                           |
| accessIPv4                          |                                                                |
| accessIPv6                          |                                                                |
| addresses                           | vlan_10.122.44.0/23=10.122.45.53                               |
| config_drive                        | True                                                           |
| created                             | 2018-09-21T05:40:31Z                                           |
| flavor                              | 16-64-100 (1cbe4ea1-8a67-4027-afd4-8f31a8b94851)               |
| hostId                              | 4bfe001f6fa4d443f283121b56139ef8bfbff47be8106387cc19edc6       |
| id                                  | 86487ef4-cc12-4be6-995e-46f5ac093901                           |
| image                               | lenovo-centos-7-release (b9f8f864-4217-4ac6-a116-62ecfa0fc074) |
| key_name                            | None                                                           |
| name                                | SLP3YM7HRCX                                                    |
| progress                            | 0                                                              |
| project_id                          | e992715df18a417997c068e5f9834b0f                               |
| properties                          |                                                                |
| security_groups                     | name='default'                                                 |
| status                              | ACTIVE                                                         |
| updated                             | 2019-10-09T10:04:19Z                                           |
| user_id                             | af518aeb935c4d258f8cb7d302c83797                               |
| volumes_attached                    | id='a821856b-409f-4e6e-becd-eb4b2344c7d8'                      |
|                                     | id='ff7d2dad-1954-4906-ae18-95c76a09b442'                      |
+-------------------------------------+----------------------------------------------------------------+
# openstack server migrate --live node-89 86487ef4-cc12-4be6-995e-46f5ac093901
# openstack  server show 86487ef4-cc12-4be6-995e-46f5ac093901
+-------------------------------------+----------------------------------------------------------------+
| Field                               | Value                                                          |
+-------------------------------------+----------------------------------------------------------------+
| OS-DCF:diskConfig                   | MANUAL                                                         |
| OS-EXT-AZ:availability_zone         | Contingency                                                    |
| OS-EXT-SRV-ATTR:host                | node-89                                                        |
| OS-EXT-SRV-ATTR:hypervisor_hostname | node-89                                                        |
| OS-EXT-SRV-ATTR:instance_name       | instance-000071aa                                              |
| OS-EXT-STS:power_state              | Running                                                        |
| OS-EXT-STS:task_state               | None                                                           |
| OS-EXT-STS:vm_state                 | active                                                         |
| OS-SRV-USG:launched_at              | 2018-09-21T05:40:36.000000                                     |
| OS-SRV-USG:terminated_at            | None                                                           |
| accessIPv4                          |                                                                |
| accessIPv6                          |                                                                |
| addresses                           | vlan_10.122.44.0/23=10.122.45.53                               |
| config_drive                        | True                                                           |
| created                             | 2018-09-21T05:40:31Z                                           |
| flavor                              | 16-64-100 (1cbe4ea1-8a67-4027-afd4-8f31a8b94851)               |
| hostId                              | 4bfe001f6fa4d443f283121b56139ef8bfbff47be8106387cc19edc6       |
| id                                  | 86487ef4-cc12-4be6-995e-46f5ac093901                           |
| image                               | lenovo-centos-7-release (b9f8f864-4217-4ac6-a116-62ecfa0fc074) |
| key_name                            | None                                                           |
| name                                | SLP3YM7HRCX                                                    |
| progress                            | 0                                                              |
| project_id                          | e992715df18a417997c068e5f9834b0f                               |
| properties                          |                                                                |
| security_groups                     | name='default'                                                 |
| status                              | ACTIVE                                                         |
| updated                             | 2019-10-09T10:04:19Z                                           |
| user_id                             | af518aeb935c4d258f8cb7d302c83797                               |
| volumes_attached                    | id='a821856b-409f-4e6e-becd-eb4b2344c7d8'                      |
|                                     | id='ff7d2dad-1954-4906-ae18-95c76a09b442'                      |
+-------------------------------------+----------------------------------------------------------------+

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    缺失模块。
    1、请确保node版本大于6.2
    2、在博客根目录（注意不是yilia根目录）执行以下命令：
    npm i hexo-generator-json-content --save

    3、在根目录_config.yml里添加配置： 

      jsonContent:
    meta: false
    pages: false
    posts:
      title: true
      date: true
      path: true
      text: false
      raw: false
      content: false
      slug: false
      updated: false
      comments: false
      link: false
      permalink: false
      excerpt: false
      categories: false
      tags: true

不看官网不足以熟练<br>不懂源码不足以精通<br><br>很惭愧<br><br>只做了一点微小的工作<br>谢谢大家