Python、Starlette 和 Docker 错误遍历文件系统：OSError [Errno 40] 符号链接级别过多：

如何解决Python、Starlette 和 Docker 错误遍历文件系统：OSError [Errno 40] 符号链接级别过多：

我收到此错误，即使我没有使用 python 运行 os.walk 或任何其他类型的文件读/写操作。

当我跑步时

find -L ./ -mindepth 15

我找到了循环中涉及的文件。 本地是 /usr/bin/X11，在服务器上我得到以下信息：

error walking file system: OSError [Errno 40] Too many levels of symbolic links: '/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stderr'

然后来自 WatchGodReload：

WARNING: WatchGodReload detected file change in '['/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/3','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stderr','/dev/fd/3','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stderr','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/4','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/1','/dev/fd/5','/dev/fd/6/dev/fd/4','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/2','/dev/fd/6/dev/fd/6/dev/fd/1','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/1','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stdout','/dev/fd/6/dev/fd/1','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/2','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/1','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/5','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/5','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/2','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/5','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/4','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/2','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/5','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stdout','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/4','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/3','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/3','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/1','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/5','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/3','/dev/stdout','/dev/fd/6/dev/fd/6/dev/fd/2','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/1','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/1','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stderr','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/5','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stdout','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/5','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stderr','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/4','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stdout','/dev/fd/6/dev/fd/2','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/3','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/4','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/4','/dev/fd/6/dev/fd/6/dev/fd/3','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stderr','/dev/fd/6/dev/fd/6/dev/stderr','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/3','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/3','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/1','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stdout','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/4','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/2','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stdout','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/2','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/1','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/1','/dev/fd/2','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/2','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stderr','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/5','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stderr','/dev/fd/6/dev/fd/6/dev/stdout','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/3','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/2','/dev/fd/6/dev/fd/6/dev/fd/6/dev/stdout','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/4','/dev/fd/6/dev/fd/3','/dev/fd/6/dev/stdout','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stderr','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stdout','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/3','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/2','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/1','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stdout','/dev/fd/6/dev/fd/6/dev/fd/4','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/4','/dev/stderr','/dev/fd/6/dev/fd/6/dev/fd/5','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/5','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/3','/dev/fd/6/dev/stderr','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/5','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/2','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stderr','/dev/fd/6/dev/fd/5','/dev/fd/4','/dev/fd/6/dev/fd/6/dev/fd/6/dev/stderr','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/4','/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/fd/6/dev/stdout','/dev/fd/1']'. Reloading...

要么我用我通常绑定的卷运行容器：

UPLOADS_PATH=/var/opt/tmp
LOCAL_UPLOADS_PATH=/var/containers/TEST_UPLOADS

docker build --build-arg POSTGRES_USER --build-arg POSTGRES_PASSWORD --build-arg POSTGRES_SERVER --build-arg POSTGRES_DB --build-arg POSTGRES_PORT --build-arg UPLOADS_PATH --build-arg WHERE_AM_I --build-arg SESSION_SECRET --build-arg DO_YOU_WANT_USERS -t test .

docker run -d --name test_container -v ${LOCAL_UPLOADS_PATH}:${UPLOADS_PATH} -p 7000:7000 test

或者没有绑定，我仍然收到相同的错误日志，并且应用程序在每次请求后不断重新启动。

附言我也尝试过 docker system prune -a，虽然有一些不推荐使用的东西，但没有任何改变。

非常感谢任何关于进一步探索的建议。

解决方法

/dev/fd 是特殊的伪设备文件系统，它显示 VFS 句柄或简单地表示正在检查设备的 PID 的打开文件。通过容器中的构建和运行进程的巧合，您的图像具有指向 /dev/fd 的链接，该链接与它试图读取的 /dev/fd 相同。

但是，如果您在伪设备上遵循符号链接链接，则以循环结尾的情况并不少见，因此当使用 find -L 作为超级用户时，您应该排除 /dev、{{1} } 和 /sys 使用 /proc

搜索和关注链接时

使用

-xdev

,

根据@jordanvrtanoski 的建议，我将关闭此问题，将其视为一个单独的问题。

他/她的回复也让我更好地了解了问题的性质，从而取得了进展。

后续问题在这里：Docker overlay2: error walking file system: OSError [Errno 40] Too many levels of symbolic links