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Jupyter-Hub

JupyterHub subsystems

系统组件：

a Hub (tornado process) that is the heart of JupyterHub
a configurable http proxy (node-http-proxy) that receives the requests from the client’s browser
multiple single-user Jupyter notebook servers (Python/IPython/tornado) that are monitored by Spawners
an authentication class that manages how users can access the system

原理

启动jupyterlab时，如果用户不存在，默认是会创建？

默认使用PAMAuthenticator，用用户名和密码进行Linux系统用户认证。

LocalAuthenticator/PAMAuthenticator可以通过以下配置，允许自动创建系统用户：

c.LocalAuthenticator.create_system_users = True

默认是LocalProcessSpawner，使用系统用户启动jupyter_labhub进程；

configurable-http-proxy (CHP)

In general, for a proxy to be usable by JupyterHub, it must:

support websockets without prior knowledge of the URL where websockets may occur
support trie-based routing (i.e. allow different routes on /foo and /foo/bar and route based on specificity)
adding or removing a route should not cause existing connections to drop

Optionally, if the JupyterHub deployment is to use host-based routing, the Proxy must additionally support routing based on the Host of the request.

# systemd v211以上，支持安全特性需要systemd v227
$ systemctl --version | head -1
systemd 231

将spanwer启动在Yarn上。