虚机机运行正常，但 power_state 为 NOSTATE
- 现象
查看虚拟机 status 是 ACTIVE 的，但是 power_state 是 NOSTATE
openstack server show 050710bb-dbc5-44f2-aec8-7842fd0eac63
+-------------------------------------+-----------------------------------------------------------+
| Field | Value |
+-------------------------------------+-----------------------------------------------------------+
......
| OS-EXT-STS:power_state | NOSTATE |
| status | ACTIVE |
......
- 查看 compute 日志
2019-08-06 16:02:05.346 13910 WARNING nova.compute.manager [req-a5db4fe4-250d-4795-9bbc-08be341dc900 8a974b0ae27f40ee87a92916f909360d c0f1fa6073be435491e4309ce0be959b - default default] [instance: 050710bb-dbc5-44f2-aec8-7842fd0eac63] Instance is unexpectedly not found. Ignore.: InstanceNotFound: Instance 050710bb-dbc5-44f2-aec8-7842fd0eac63 could not be found.
2019-08-06 16:02:05.347 13910 DEBUG oslo_concurrency.lockutils [req-a5db4fe4-250d-4795-9bbc-08be341dc900 8a974b0ae27f40ee87a92916f909360d c0f1fa6073be435491e4309ce0be959b - default default] Lock "050710bb-dbc5-44f2-aec8-7842fd0eac63" released by "nova.compute.manager.query_driver_power_state_and_sync" :: held 0.081s inner /usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py:285
发现 InstanceNotFound: Instance 050710bb-dbc5-44f2-aec8-7842fd0eac63 could not be found 的日志
file: /usr/lib/python2.7/site-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("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: "捕获InstanceNotFound"
vm_power_state = power_state.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
由于 manager.py 捕获到 InstanceNotFound 设置 vm_power_state=NOSTATE
-
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
-
解决办法
重新 update 数据库，和实际情况保持一致,硬重启虚拟机（ 后端存储使用的是 ceph ）
