在 Windows 上使用 pywin32 将 python Flask 应用程序添加为服务时出现 Jupyter Notebook 内核错误

问题描述 投票：0回答：1

我创建了可以运行 jupyter 笔记本服务器的 Flask 应用程序。

当我们从 UI 中单击应用程序时，将使用 subprocess.Popen() 创建一个新的子进程来构建 Jupyter 笔记本服务器。 我使用 win32serviceutil 为 Flask Web 应用程序创建了 Windows 服务。 共有三种情况。

场景 1：当使用 python.exe 运行 Flask 应用时，Jupyter Notebook 可以正常工作。
场景2：Flask应用服务在debug模式下执行时，运行正常。

command :- 
python service.py debug

场景 3：- 当 windows 服务 jupyter 笔记本内核死亡时执行 Flask 应用程序时。

Error :- 
Traceback (most recent call last):
  File "d:\v307\lib\site-packages\tornado\web.py", line 1704, in _execute
    result = await result
  File "C:\Program Files\Python39\lib\asyncio\tasks.py", line 328, in __wakeup
    future.result()
  File "d:\v307\lib\site-packages\tornado\gen.py", line 769, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "d:\v307\lib\site-packages\notebook\services\sessions\handlers.py", line 74, in post
    model = yield maybe_future(
  File "d:\v307\lib\site-packages\tornado\gen.py", line 762, in run
    value = future.result()
  File "d:\v307\lib\site-packages\tornado\gen.py", line 769, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "d:\v307\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 98, in create_session
    kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
  File "d:\v307\lib\site-packages\tornado\gen.py", line 762, in run
    value = future.result()
  File "d:\v307\lib\site-packages\tornado\gen.py", line 769, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "d:\v307\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 110, in start_kernel_for_session
    kernel_id = yield maybe_future(
  File "d:\v307\lib\site-packages\tornado\gen.py", line 762, in run
    value = future.result()
  File "C:\Program Files\Python39\lib\asyncio\futures.py", line 201, in result
    raise self._exception
  File "C:\Program Files\Python39\lib\asyncio\tasks.py", line 256, in __step
    result = coro.send(None)
  File "d:\v307\lib\site-packages\notebook\services\kernels\kernelmanager.py", line 176, in start_kernel
    kernel_id = await maybe_future(self.pinned_superclass.start_kernel(self, **kwargs))
  File "d:\v307\lib\site-packages\jupyter_client\utils.py", line 30, in wrapped
    raise e
  File "d:\v307\lib\site-packages\jupyter_client\utils.py", line 27, in wrapped
    return loop.run_until_complete(future)
  File "d:\v307\lib\site-packages\nest_asyncio.py", line 89, in run_until_complete
    return f.result()
  File "C:\Program Files\Python39\lib\asyncio\futures.py", line 201, in result
    raise self._exception
  File "C:\Program Files\Python39\lib\asyncio\tasks.py", line 256, in __step
    result = coro.send(None)
  File "d:\v307\lib\site-packages\jupyter_client\multikernelmanager.py", line 212, in _async_start_kernel
    starter = ensure_async(km.start_kernel(**kwargs))
  File "d:\v307\lib\site-packages\jupyter_client\utils.py", line 30, in wrapped
    raise e
  File "d:\v307\lib\site-packages\jupyter_client\utils.py", line 27, in wrapped
    return loop.run_until_complete(future)
  File "d:\v307\lib\site-packages\nest_asyncio.py", line 89, in run_until_complete
    return f.result()
  File "C:\Program Files\Python39\lib\asyncio\futures.py", line 201, in result
    raise self._exception
  File "C:\Program Files\Python39\lib\asyncio\tasks.py", line 256, in __step
    result = coro.send(None)
  File "d:\v307\lib\site-packages\jupyter_client\manager.py", line 83, in wrapper
    raise e
  File "d:\v307\lib\site-packages\jupyter_client\manager.py", line 75, in wrapper
    out = await method(self, *args, **kwargs)
  File "d:\v307\lib\site-packages\jupyter_client\manager.py", line 383, in _async_start_kernel
    kernel_cmd, kw = await ensure_async(self.pre_start_kernel(**kw))
  File "d:\v307\lib\site-packages\jupyter_client\utils.py", line 30, in wrapped
    raise e
  File "d:\v307\lib\site-packages\jupyter_client\utils.py", line 27, in wrapped
    return loop.run_until_complete(future)
  File "d:\v307\lib\site-packages\nest_asyncio.py", line 89, in run_until_complete
    return f.result()
  File "C:\Program Files\Python39\lib\asyncio\futures.py", line 201, in result
    raise self._exception
  File "C:\Program Files\Python39\lib\asyncio\tasks.py", line 256, in __step
    result = coro.send(None)
  File "d:\v307\lib\site-packages\jupyter_client\manager.py", line 349, in _async_pre_start_kernel
    kw = await self.provisioner.pre_launch(**kw)
  File "d:\v307\lib\site-packages\jupyter_client\provisioning\local_provisioner.py", line 190, in pre_launch
    km.write_connection_file()
  File "d:\v307\lib\site-packages\jupyter_client\connect.py", line 503, in write_connection_file
    self.connection_file, cfg = write_connection_file(
  File "d:\v307\lib\site-packages\jupyter_client\connect.py", line 164, in write_connection_file
    with secure_write(fname) as f:
  File "C:\Program Files\Python39\lib\contextlib.py", line 117, in __enter__
    return next(self.gen)
  File "d:\v307\lib\site-packages\jupyter_core\paths.py", line 893, in secure_write
    win32_restrict_file_to_user(fname)
  File "d:\v307\lib\site-packages\jupyter_core\paths.py", line 442, in win32_restrict_file_to_user
    user, _domain, _type = win32security.LookupAccountName(
pywintypes.error: (1789, 'LookupAccountName', 'The trust relationship between this workstation and the primary domain failed.')

我使用 waitress 作为网络服务器，并使用 win32serviceutil 来创建 Flask 应用程序的服务
Python 版本 3.9

  1. 我尝试使用 NSSM 和 Winsw 将 Flask 应用程序添加为服务，但遇到了同样的错误。
  2. 使用 Popen 创建子进程时添加了creationflags=CREATE_NEW_CONSOLE 参数，但没有任何进展。

期待
当我们将 Flask webapp 作为服务运行时解决问题的方法。

python-3.x jupyter-notebook subprocess ipython win32serviceutil
1个回答
0
投票

在 Windows 操作系统中，所有服务都在会话 0 上运行（👉 会话 0） 会话 0 无法直接访问 GPU 这就是 Jupyter 内核显示错误的原因。 Windows 服务可以选择以其他用户身份登录，并允许用户直接访问桌面（👉 有关服务登录的更多信息 ，👉有关桌面交互服务的更多信息）。此选项没有解决我的问题。

解决方案是让 Flask Server 在终端中运行。

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