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[Bug 1782349] Re: Failed to schedule instances: NoValidHost_Remote: No valid host was found.

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1782349@xxxxxxxxxxxxxxxxxx>
Date: Sat, 03 Nov 2018 04:17:13 -0000
Reply-to: Bug 1782349 <1782349@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
[Expired for OpenStack Compute (nova) because there has been no activity
for 60 days.]

** Changed in: nova
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1782349

Title:
   Failed to schedule instances: NoValidHost_Remote: No valid host was
  found.

Status in OpenStack Compute (nova):
  Expired

Bug description:
  openstack Q：

  (openstack) compute service list
  +----+------------------+------------+----------+---------+-------+----------------------------+
  | ID | Binary           | Host       | Zone     | Status  | State | Updated At                 |
  +----+------------------+------------+----------+---------+-------+----------------------------+
  |  1 | nova-consoleauth | controller | internal | enabled | up    | 2018-07-18T12:23:51.000000 |
  |  2 | nova-conductor   | controller | internal | enabled | up    | 2018-07-18T12:23:47.000000 |
  |  3 | nova-scheduler   | controller | internal | enabled | up    | 2018-07-18T12:23:49.000000 |
  |  6 | nova-compute     | controller | nova     | enabled | up    | 2018-07-18T12:23:53.000000 |
  |  7 | nova-compute     | compute01  | nova     | enabled | up    | 2018-07-18T12:23:47.000000 |
  +----+------------------+------------+----------+---------+-------+----------------------------+


  (openstack) flavor list
  +--------------------------------------+------+-----+------+-----------+-------+-----------+
  | ID                                   | Name | RAM | Disk | Ephemeral | VCPUs | Is Public |
  +--------------------------------------+------+-----+------+-----------+-------+-----------+
  | 2340e418-8214-440f-a5b6-39a1e3648cf1 | f1   | 512 |   10 |         0 |     1 | True      |
  | f1c886da-b5ab-4519-b0ca-b0703e18d629 | f0   | 512 |    1 |         0 |     1 | True      |
  +--------------------------------------+------+-----+------+-----------+-------+-----------+

  
  (openstack) hypervisor stats show
  +----------------------+-------+
  | Field                | Value |
  +----------------------+-------+
  | count                | 2     |
  | current_workload     | 0     |
  | disk_available_least | 81    |
  | free_disk_gb         | 87    |
  | free_ram_mb          | 30718 |
  | local_gb             | 98    |
  | local_gb_used        | 11    |
  | memory_mb            | 32766 |
  | memory_mb_used       | 2048  |
  | running_vms          | 2     |
  | vcpus                | 20    |
  | vcpus_used           | 2     |
  +----------------------+-------+

  
  [root@controller ~]# tail -f /var/log/nova/nova-conductor.log
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager [req-f360123a-42b8-4941-8fd6-496baa0742bb 93978126a56848db8a0cb177311c3076 11bd52001a0a45fd87f1d6e44949abaa - default default] Failed to schedule instances: NoValidHost_Remote: No valid host was found. 
  Traceback (most recent call last):

    File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 226, in inner
      return func(*args, **kwargs)

    File "/usr/lib/python2.7/site-packages/nova/scheduler/manager.py", line 139, in select_destinations
      raise exception.NoValidHost(reason="")

  NoValidHost: No valid host was found.
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager Traceback (most recent call last):
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager   File "/usr/lib/python2.7/site-packages/nova/conductor/manager.py", line 1116, in schedule_and_build_instances
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager     instance_uuids, return_alternates=True)
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager   File "/usr/lib/python2.7/site-packages/nova/conductor/manager.py", line 716, in _schedule_instances
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager     return_alternates=return_alternates)
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager   File "/usr/lib/python2.7/site-packages/nova/scheduler/utils.py", line 726, in wrapped
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager     return func(*args, **kwargs)
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager   File "/usr/lib/python2.7/site-packages/nova/scheduler/client/__init__.py", line 53, in select_destinations
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager     instance_uuids, return_objects, return_alternates)
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager   File "/usr/lib/python2.7/site-packages/nova/scheduler/client/__init__.py", line 37, in __run_method
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager     return getattr(self.instance, __name)(*args, **kwargs)
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager   File "/usr/lib/python2.7/site-packages/nova/scheduler/client/query.py", line 42, in select_destinations
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager     instance_uuids, return_objects, return_alternates)
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager   File "/usr/lib/python2.7/site-packages/nova/scheduler/rpcapi.py", line 158, in select_destinations
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager   File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/client.py", line 174, in call
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager     retry=self.retry)
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager   File "/usr/lib/python2.7/site-packages/oslo_messaging/transport.py", line 131, in _send
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager     timeout=timeout, retry=retry)
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager   File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 559, in send
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager     retry=retry)
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager   File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 550, in _send
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager     raise result
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager NoValidHost_Remote: No valid host was found. 
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager Traceback (most recent call last):
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager 
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager   File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 226, in inner
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager     return func(*args, **kwargs)
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager 
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager   File "/usr/lib/python2.7/site-packages/nova/scheduler/manager.py", line 139, in select_destinations
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager 
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager NoValidHost: No valid host was found. 
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager 
  2018-07-18 20:21:22.904 13466 ERROR nova.conductor.manager 
  2018-07-18 20:21:23.009 13466 WARNING nova.scheduler.utils [req-f360123a-42b8-4941-8fd6-496baa0742bb 93978126a56848db8a0cb177311c3076 11bd52001a0a45fd87f1d6e44949abaa - default default] Failed to compute_task_build_instances: No valid host was found. 
  Traceback (most recent call last):

    File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 226, in inner
      return func(*args, **kwargs)

    File "/usr/lib/python2.7/site-packages/nova/scheduler/manager.py", line 139, in select_destinations
      raise exception.NoValidHost(reason="")

  NoValidHost: No valid host was found. 
  : NoValidHost_Remote: No valid host was found. 
  2018-07-18 20:21:23.013 13466 WARNING nova.scheduler.utils [req-f360123a-42b8-4941-8fd6-496baa0742bb 93978126a56848db8a0cb177311c3076 11bd52001a0a45fd87f1d6e44949abaa - default default] [instance: 860337fd-7571-4f04-a7f2-a672be57c57e] Setting instance to ERROR state.: NoValidHost_Remote: No valid host was found. 


  Using f1 flavor  can't create the above error, the resource is very
  good, why not let it be created?

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References

[Bug 1782349] [NEW] Failed to schedule instances: NoValidHost_Remote: No valid host was found.
From: men, 2018-07-18