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Jupyter Hub No such file or directory: 'configurable-http-proxy' beheben

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Problem:

Beim Versuch, Jupyter Hub zu starten, erscheint eine Fehlermeldung wie

jupyterhub_proxy_error.txt
[E 2021-06-18 13:07:48.462 JupyterHub proxy:711] Failed to find proxy ['configurable-http-proxy']
    The proxy can be installed with `npm install -g configurable-http-proxy`.To install `npm`, install nodejs which includes `npm`.If you see an `EACCES` error or permissions error, refer to the `npm` documentation on How To Prevent Permissions Errors.
[C 2021-06-18 13:07:48.462 JupyterHub app:2739] Failed to start proxy
    Traceback (most recent call last):
      File "/usr/local/lib/python3.8/dist-packages/jupyterhub/app.py", line 2737, in start
        await self.proxy.start()
      File "/usr/local/lib/python3.8/dist-packages/jupyterhub/proxy.py", line 707, in start
        self.proxy_process = Popen(
      File "/usr/lib/python3.8/subprocess.py", line 854, in __init__
        self._execute_child(args, executable, preexec_fn, close_fds,
      File "/usr/lib/python3.8/subprocess.py", line 1702, in _execute_child
        raise child_exception_type(errno_num, err_msg, err_filename)
    FileNotFoundError: [Errno 2] No such file or directory: 'configurable-http-proxy'

Lösung

Wie in der Jupyter-Hub-Installationsdokumentation beschrieben, muss das configurable-http-proxy npm-Paket installiert werden, damit Jupyter funktioniert:

install_configurable_http_proxy.sh
sudo npm install -g configurable-http-proxy

Falls npm noch nicht installiert ist, siehe unseren Artikel NodeJS 14.x LTS auf Ubuntu in 1 Minute installieren oder die passende Distribution für das Betriebssystem auf der NodeJS-Downloadseite finden.

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