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我已经在双节点配置中安装了带有 devstack 脚本的 OpenStack，即一个控制器/网络节点和一个单独的计算节点。一切似乎都已正常启动，我看到服务在节点上运行（如果连接到屏幕会话）。但是，当尝试通过仪表板启动实例时，它会在日志中显示以下内容失败：

ERROR oslo.messaging._drivers.common [req-892e7b17-49dc-4ce5-a193-ceaf547c97eb admin demo]
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 137, in _dispatch_and_reply incoming.message))
File "/usr/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 180, in _dispatch
    return self._do_dispatch(endpoint, method, ctxt, args)
File "/usr/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 126, in _do_dispatch
    result = getattr(endpoint, method)(ctxt, **new_args)
File "/usr/lib/python2.7/site-packages/oslo/messaging/rpc/server.py", line 139, in inner
    return func(*args, **kwargs)
File "/opt/stack/nova/nova/scheduler/manager.py", line 175, in select_destinations
    filter_properties)
File "/opt/stack/nova/nova/scheduler/filter_scheduler.py", line 147, in select_destinations
    filter_properties)
File "/opt/stack/nova/nova/scheduler/filter_scheduler.py", line 276, in _schedule
    filter_properties, index=num)
File "/opt/stack/nova/nova/scheduler/host_manager.py", line 359, in get_filtered_hosts
    filter_classes = self._choose_host_filters(filter_class_names)
File "/opt/stack/nova/nova/scheduler/host_manager.py", line 309, in _choose_host_filters
    raise exception.SchedulerHostFilterNotFound(filter_name=msg)
SchedulerHostFilterNotFound: Scheduler Host Filter  could not be found.

如果以前有人遇到过这个问题，你能解释一下如何解决它吗？

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