From e613f18d97f4543499e9718f71978f1b7d7c9169 Mon Sep 17 00:00:00 2001
From: Jonas Waeber <jonas.waeber@unibas.ch>
Date: Thu, 6 Feb 2025 15:04:29 +0100
Subject: [PATCH] initial commit
---
.gitignore | 1 +
.gitlab-ci.yml | 8 +
Dockerfile | 5 +
README.md | 95 +-
jupyterhub_config.py | 2814 ++++++++++++++++++++++++++++++++++++++++++
5 files changed, 2830 insertions(+), 93 deletions(-)
create mode 100644 .gitignore
create mode 100644 .gitlab-ci.yml
create mode 100644 Dockerfile
create mode 100644 jupyterhub_config.py
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d6e830b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.python-version
\ No newline at end of file
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..90d887e
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,8 @@
+stages:
+ - publish
+
+default:
+ tags: ["ubr"]
+
+include:
+ - component: $CI_SERVER_FQDN/ub-unibas/ci/docker-components/publish-image@main
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..acbc118
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,5 @@
+FROM quay.io/jupyterhub/jupyterhub:latest
+
+COPY jupyterhub_config.py /etc/jupyterhub/jupyterhub_config.py
+
+CMD ["jupyterhub", "-f", "/etc/jupyterhub/jupyterhub_config.py"]
\ No newline at end of file
diff --git a/README.md b/README.md
index 3b5aec5..e1d6df2 100644
--- a/README.md
+++ b/README.md
@@ -1,93 +1,2 @@
-# jupyterhub-deployment
-
-
-
-## Getting started
-
-To make it easy for you to get started with GitLab, here's a list of recommended next steps.
-
-Already a pro? Just edit this README.md and make it your own. Want to make it easy? [Use the template at the bottom](#editing-this-readme)!
-
-## Add your files
-
-- [ ] [Create](https://docs.gitlab.com/ee/user/project/repository/web_editor.html#create-a-file) or [upload](https://docs.gitlab.com/ee/user/project/repository/web_editor.html#upload-a-file) files
-- [ ] [Add files using the command line](https://docs.gitlab.com/ee/gitlab-basics/add-file.html#add-a-file-using-the-command-line) or push an existing Git repository with the following command:
-
-```
-cd existing_repo
-git remote add origin https://gitlab.switch.ch/ub-unibas/infrastructure/jupyterhub-deployment.git
-git branch -M main
-git push -uf origin main
-```
-
-## Integrate with your tools
-
-- [ ] [Set up project integrations](https://gitlab.switch.ch/ub-unibas/infrastructure/jupyterhub-deployment/-/settings/integrations)
-
-## Collaborate with your team
-
-- [ ] [Invite team members and collaborators](https://docs.gitlab.com/ee/user/project/members/)
-- [ ] [Create a new merge request](https://docs.gitlab.com/ee/user/project/merge_requests/creating_merge_requests.html)
-- [ ] [Automatically close issues from merge requests](https://docs.gitlab.com/ee/user/project/issues/managing_issues.html#closing-issues-automatically)
-- [ ] [Enable merge request approvals](https://docs.gitlab.com/ee/user/project/merge_requests/approvals/)
-- [ ] [Set auto-merge](https://docs.gitlab.com/ee/user/project/merge_requests/merge_when_pipeline_succeeds.html)
-
-## Test and Deploy
-
-Use the built-in continuous integration in GitLab.
-
-- [ ] [Get started with GitLab CI/CD](https://docs.gitlab.com/ee/ci/quick_start/index.html)
-- [ ] [Analyze your code for known vulnerabilities with Static Application Security Testing (SAST)](https://docs.gitlab.com/ee/user/application_security/sast/)
-- [ ] [Deploy to Kubernetes, Amazon EC2, or Amazon ECS using Auto Deploy](https://docs.gitlab.com/ee/topics/autodevops/requirements.html)
-- [ ] [Use pull-based deployments for improved Kubernetes management](https://docs.gitlab.com/ee/user/clusters/agent/)
-- [ ] [Set up protected environments](https://docs.gitlab.com/ee/ci/environments/protected_environments.html)
-
-***
-
-# Editing this README
-
-When you're ready to make this README your own, just edit this file and use the handy template below (or feel free to structure it however you want - this is just a starting point!). Thanks to [makeareadme.com](https://www.makeareadme.com/) for this template.
-
-## Suggestions for a good README
-
-Every project is different, so consider which of these sections apply to yours. The sections used in the template are suggestions for most open source projects. Also keep in mind that while a README can be too long and detailed, too long is better than too short. If you think your README is too long, consider utilizing another form of documentation rather than cutting out information.
-
-## Name
-Choose a self-explaining name for your project.
-
-## Description
-Let people know what your project can do specifically. Provide context and add a link to any reference visitors might be unfamiliar with. A list of Features or a Background subsection can also be added here. If there are alternatives to your project, this is a good place to list differentiating factors.
-
-## Badges
-On some READMEs, you may see small images that convey metadata, such as whether or not all the tests are passing for the project. You can use Shields to add some to your README. Many services also have instructions for adding a badge.
-
-## Visuals
-Depending on what you are making, it can be a good idea to include screenshots or even a video (you'll frequently see GIFs rather than actual videos). Tools like ttygif can help, but check out Asciinema for a more sophisticated method.
-
-## Installation
-Within a particular ecosystem, there may be a common way of installing things, such as using Yarn, NuGet, or Homebrew. However, consider the possibility that whoever is reading your README is a novice and would like more guidance. Listing specific steps helps remove ambiguity and gets people to using your project as quickly as possible. If it only runs in a specific context like a particular programming language version or operating system or has dependencies that have to be installed manually, also add a Requirements subsection.
-
-## Usage
-Use examples liberally, and show the expected output if you can. It's helpful to have inline the smallest example of usage that you can demonstrate, while providing links to more sophisticated examples if they are too long to reasonably include in the README.
-
-## Support
-Tell people where they can go to for help. It can be any combination of an issue tracker, a chat room, an email address, etc.
-
-## Roadmap
-If you have ideas for releases in the future, it is a good idea to list them in the README.
-
-## Contributing
-State if you are open to contributions and what your requirements are for accepting them.
-
-For people who want to make changes to your project, it's helpful to have some documentation on how to get started. Perhaps there is a script that they should run or some environment variables that they need to set. Make these steps explicit. These instructions could also be useful to your future self.
-
-You can also document commands to lint the code or run tests. These steps help to ensure high code quality and reduce the likelihood that the changes inadvertently break something. Having instructions for running tests is especially helpful if it requires external setup, such as starting a Selenium server for testing in a browser.
-
-## Authors and acknowledgment
-Show your appreciation to those who have contributed to the project.
-
-## License
-For open source projects, say how it is licensed.
-
-## Project status
-If you have run out of energy or time for your project, put a note at the top of the README saying that development has slowed down or stopped completely. Someone may choose to fork your project or volunteer to step in as a maintainer or owner, allowing your project to keep going. You can also make an explicit request for maintainers.
+# Jupyter Hub Deployment
+The configuration to create the Jupyter Hub docker image used internally.
\ No newline at end of file
diff --git a/jupyterhub_config.py b/jupyterhub_config.py
new file mode 100644
index 0000000..5a8eb33
--- /dev/null
+++ b/jupyterhub_config.py
@@ -0,0 +1,2814 @@
+# Configuration file for jupyterhub.
+
+c = get_config() #noqa
+
+#------------------------------------------------------------------------------
+# Application(SingletonConfigurable) configuration
+#------------------------------------------------------------------------------
+## This is an application.
+
+## The date format used by logging formatters for %(asctime)s
+# Default: '%Y-%m-%d %H:%M:%S'
+# c.Application.log_datefmt = '%Y-%m-%d %H:%M:%S'
+
+## The Logging format template
+# Default: '[%(name)s]%(highlevel)s %(message)s'
+# c.Application.log_format = '[%(name)s]%(highlevel)s %(message)s'
+
+## Set the log level by value or name.
+# Choices: any of [0, 10, 20, 30, 40, 50, 'DEBUG', 'INFO', 'WARN', 'ERROR', 'CRITICAL']
+# Default: 30
+# c.Application.log_level = 30
+
+## Configure additional log handlers.
+#
+# The default stderr logs handler is configured by the log_level, log_datefmt
+# and log_format settings.
+#
+# This configuration can be used to configure additional handlers (e.g. to
+# output the log to a file) or for finer control over the default handlers.
+#
+# If provided this should be a logging configuration dictionary, for more
+# information see:
+# https://docs.python.org/3/library/logging.config.html#logging-config-
+# dictschema
+#
+# This dictionary is merged with the base logging configuration which defines
+# the following:
+#
+# * A logging formatter intended for interactive use called
+# ``console``.
+# * A logging handler that writes to stderr called
+# ``console`` which uses the formatter ``console``.
+# * A logger with the name of this application set to ``DEBUG``
+# level.
+#
+# This example adds a new handler that writes to a file:
+#
+# .. code-block:: python
+#
+# c.Application.logging_config = {
+# "handlers": {
+# "file": {
+# "class": "logging.FileHandler",
+# "level": "DEBUG",
+# "filename": "<path/to/file>",
+# }
+# },
+# "loggers": {
+# "<application-name>": {
+# "level": "DEBUG",
+# # NOTE: if you don't list the default "console"
+# # handler here then it will be disabled
+# "handlers": ["console", "file"],
+# },
+# },
+# }
+# Default: {}
+# c.Application.logging_config = {}
+
+## Instead of starting the Application, dump configuration to stdout
+# Default: False
+# c.Application.show_config = False
+
+## Instead of starting the Application, dump configuration to stdout (as JSON)
+# Default: False
+# c.Application.show_config_json = False
+
+#------------------------------------------------------------------------------
+# JupyterHub(Application) configuration
+#------------------------------------------------------------------------------
+## An Application for starting a Multi-User Jupyter Notebook server.
+
+## Maximum number of concurrent servers that can be active at a time.
+#
+# Setting this can limit the total resources your users can consume.
+#
+# An active server is any server that's not fully stopped. It is considered
+# active from the time it has been requested until the time that it has
+# completely stopped.
+#
+# If this many user servers are active, users will not be able to launch new
+# servers until a server is shutdown. Spawn requests will be rejected with a 429
+# error asking them to try again.
+#
+# If set to 0, no limit is enforced.
+# Default: 0
+# c.JupyterHub.active_server_limit = 0
+
+## Duration (in seconds) to determine the number of active users.
+# Default: 1800
+# c.JupyterHub.active_user_window = 1800
+
+## Resolution (in seconds) for updating activity
+#
+# If activity is registered that is less than activity_resolution seconds more
+# recent than the current value, the new value will be ignored.
+#
+# This avoids too many writes to the Hub database.
+# Default: 30
+# c.JupyterHub.activity_resolution = 30
+
+## DEPRECATED since version 2.0.0.
+#
+# The default admin role has full permissions, use custom RBAC scopes instead to
+# create restricted administrator roles.
+# https://jupyterhub.readthedocs.io/en/stable/rbac/index.html
+# Default: False
+# c.JupyterHub.admin_access = False
+
+## DEPRECATED since version 0.7.2, use Authenticator.admin_users instead.
+# Default: set()
+# c.JupyterHub.admin_users = set()
+
+## Allow named single-user servers per user
+# Default: False
+# c.JupyterHub.allow_named_servers = False
+
+## Answer yes to any questions (e.g. confirm overwrite)
+# Default: False
+# c.JupyterHub.answer_yes = False
+
+## The default amount of records returned by a paginated endpoint
+# Default: 50
+# c.JupyterHub.api_page_default_limit = 50
+
+## The maximum amount of records that can be returned at once
+# Default: 200
+# c.JupyterHub.api_page_max_limit = 200
+
+## PENDING DEPRECATION: consider using services
+#
+# Dict of token:username to be loaded into the database.
+#
+# Allows ahead-of-time generation of API tokens for use by externally managed services,
+# which authenticate as JupyterHub users.
+#
+# Consider using services for general services that talk to the
+# JupyterHub API.
+# Default: {}
+# c.JupyterHub.api_tokens = {}
+
+## Authentication for prometheus metrics
+# Default: True
+# c.JupyterHub.authenticate_prometheus = True
+
+## Class for authenticating users.
+#
+# This should be a subclass of :class:`jupyterhub.auth.Authenticator`
+#
+# with an :meth:`authenticate` method that:
+#
+# - is a coroutine (asyncio or tornado)
+# - returns username on success, None on failure
+# - takes two arguments: (handler, data),
+# where `handler` is the calling web.RequestHandler,
+# and `data` is the POST form data from the login page.
+#
+# .. versionchanged:: 1.0
+# authenticators may be registered via entry points,
+# e.g. `c.JupyterHub.authenticator_class = 'pam'`
+#
+# Currently installed:
+# - default: jupyterhub.auth.PAMAuthenticator
+# - dummy: jupyterhub.auth.DummyAuthenticator
+# - null: jupyterhub.auth.NullAuthenticator
+# - pam: jupyterhub.auth.PAMAuthenticator
+# Default: 'jupyterhub.auth.PAMAuthenticator'
+c.JupyterHub.authenticator_class = 'jupyterhub.auth.PAMAuthenticator'
+
+## The base URL of the entire application.
+#
+# Add this to the beginning of all JupyterHub URLs.
+# Use base_url to run JupyterHub within an existing website.
+# Default: '/'
+c.JupyterHub.base_url = '/'
+
+## The public facing URL of the whole JupyterHub application.
+#
+# This is the address on which the proxy will bind.
+# Sets protocol, ip, base_url
+# Default: 'http://:8000'
+c.JupyterHub.bind_url = 'http://0.0.0.0:8000'
+
+## Whether to shutdown the proxy when the Hub shuts down.
+#
+# Disable if you want to be able to teardown the Hub while leaving the
+# proxy running.
+#
+# Only valid if the proxy was starting by the Hub process.
+#
+# If both this and cleanup_servers are False, sending SIGINT to the Hub will
+# only shutdown the Hub, leaving everything else running.
+#
+# The Hub should be able to resume from database state.
+# Default: True
+c.JupyterHub.cleanup_proxy = True
+
+## Whether to shutdown single-user servers when the Hub shuts down.
+#
+# Disable if you want to be able to teardown the Hub while leaving the
+# single-user servers running.
+#
+# If both this and cleanup_proxy are False, sending SIGINT to the Hub will
+# only shutdown the Hub, leaving everything else running.
+#
+# The Hub should be able to resume from database state.
+# Default: True
+c.JupyterHub.cleanup_servers = True
+
+## Maximum number of concurrent users that can be spawning at a time.
+#
+# Spawning lots of servers at the same time can cause performance problems for
+# the Hub or the underlying spawning system. Set this limit to prevent bursts of
+# logins from attempting to spawn too many servers at the same time.
+#
+# This does not limit the number of total running servers. See
+# active_server_limit for that.
+#
+# If more than this many users attempt to spawn at a time, their requests will
+# be rejected with a 429 error asking them to try again. Users will have to wait
+# for some of the spawning services to finish starting before they can start
+# their own.
+#
+# If set to 0, no limit is enforced.
+# Default: 100
+c.JupyterHub.concurrent_spawn_limit = 10
+
+## The config file to load
+# Default: 'jupyterhub_config.py'
+# c.JupyterHub.config_file = 'jupyterhub_config.py'
+
+## DEPRECATED: does nothing
+# Default: False
+# c.JupyterHub.confirm_no_ssl = False
+
+## Enable `__Host-` prefix on authentication cookies.
+#
+# The `__Host-` prefix on JupyterHub cookies provides further
+# protection against cookie tossing when untrusted servers
+# may control subdomains of your jupyterhub deployment.
+#
+# _However_, it also requires that cookies be set on the path `/`,
+# which means they are shared by all JupyterHub components,
+# so a compromised server component will have access to _all_ JupyterHub-related
+# cookies of the visiting browser.
+# It is recommended to only combine `__Host-` cookies with per-user domains.
+#
+# .. versionadded:: 4.1
+# Default: False
+# c.JupyterHub.cookie_host_prefix_enabled = False
+
+## Number of days for a login cookie to be valid.
+# Default is two weeks.
+# Default: 14
+# c.JupyterHub.cookie_max_age_days = 14
+
+## The cookie secret to use to encrypt cookies.
+#
+# Loaded from the JPY_COOKIE_SECRET env variable by default.
+#
+# Should be exactly 256 bits (32 bytes).
+# Default: traitlets.Undefined
+# c.JupyterHub.cookie_secret = traitlets.Undefined
+
+## File in which to store the cookie secret.
+# Default: 'jupyterhub_cookie_secret'
+# c.JupyterHub.cookie_secret_file = 'jupyterhub_cookie_secret'
+
+## Custom scopes to define.
+#
+# For use when defining custom roles,
+# to grant users granular permissions
+#
+# All custom scopes must have a description,
+# and must start with the prefix `custom:`.
+#
+# For example::
+#
+# custom_scopes = {
+# "custom:jupyter_server:read": {
+# "description": "read-only access to a single-user server",
+# },
+# }
+# Default: {}
+# c.JupyterHub.custom_scopes = {}
+
+## The location of jupyterhub data files (e.g. /usr/local/share/jupyterhub)
+# Default: ''
+c.JupyterHub.data_files_path = '/data/jupyterhub'
+
+## Include any kwargs to pass to the database connection.
+# See sqlalchemy.create_engine for details.
+# Default: {}
+# c.JupyterHub.db_kwargs = {}
+
+## url for the database. e.g. `sqlite:///jupyterhub.sqlite`
+# Default: 'sqlite:///jupyterhub.sqlite'
+# c.JupyterHub.db_url = 'sqlite:///jupyterhub.sqlite'
+
+## log all database transactions. This has A LOT of output
+# Default: False
+# c.JupyterHub.debug_db = False
+
+## DEPRECATED since version 0.8: Use ConfigurableHTTPProxy.debug
+# Default: False
+# c.JupyterHub.debug_proxy = False
+
+## If named servers are enabled, default name of server to spawn or open when no
+# server is specified, e.g. by user-redirect.
+#
+# Note: This has no effect if named servers are not enabled, and does _not_
+# change the existence or behavior of the default server named `''` (the empty
+# string). This only affects which named server is launched when no server is
+# specified, e.g. by links to `/hub/user-redirect/lab/tree/mynotebook.ipynb`.
+# Default: ''
+# c.JupyterHub.default_server_name = ''
+
+## The default URL for users when they arrive (e.g. when user directs to "/")
+#
+# By default, redirects users to their own server.
+#
+# Can be a Unicode string (e.g. '/hub/home') or a callable based on the handler
+# object:
+#
+# ::
+#
+# def default_url_fn(handler):
+# user = handler.current_user
+# if user and user.admin:
+# return '/hub/admin'
+# return '/hub/home'
+#
+# c.JupyterHub.default_url = default_url_fn
+# Default: traitlets.Undefined
+# c.JupyterHub.default_url = traitlets.Undefined
+
+## Dict authority:dict(files). Specify the key, cert, and/or
+# ca file for an authority. This is useful for externally managed
+# proxies that wish to use internal_ssl.
+#
+# The files dict has this format (you must specify at least a cert)::
+#
+# {
+# 'key': '/path/to/key.key',
+# 'cert': '/path/to/cert.crt',
+# 'ca': '/path/to/ca.crt'
+# }
+#
+# The authorities you can override: 'hub-ca', 'notebooks-ca',
+# 'proxy-api-ca', 'proxy-client-ca', and 'services-ca'.
+#
+# Use with internal_ssl
+# Default: {}
+# c.JupyterHub.external_ssl_authorities = {}
+
+## DEPRECATED.
+#
+# If you need to register additional HTTP endpoints please use services instead.
+# Default: []
+# c.JupyterHub.extra_handlers = []
+
+## DEPRECATED: use output redirection instead, e.g.
+#
+# jupyterhub &>> /var/log/jupyterhub.log
+# Default: ''
+# c.JupyterHub.extra_log_file = ''
+
+## Extra log handlers to set on JupyterHub logger
+# Default: []
+# c.JupyterHub.extra_log_handlers = []
+
+## Alternate header to use as the Host (e.g., X-Forwarded-Host)
+# when determining whether a request is cross-origin
+#
+# This may be useful when JupyterHub is running behind a proxy that rewrites
+# the Host header.
+# Default: ''
+# c.JupyterHub.forwarded_host_header = ''
+
+## Generate certs used for internal ssl
+# Default: False
+# c.JupyterHub.generate_certs = False
+
+## Generate default config file
+# Default: False
+# c.JupyterHub.generate_config = False
+
+## The URL on which the Hub will listen. This is a private URL for internal
+# communication. Typically set in combination with hub_connect_url. If a unix
+# socket, hub_connect_url **must** also be set.
+#
+# For example:
+#
+# "http://127.0.0.1:8081"
+# "unix+http://%2Fsrv%2Fjupyterhub%2Fjupyterhub.sock"
+#
+# .. versionadded:: 0.9
+# Default: ''
+# c.JupyterHub.hub_bind_url = ''
+
+## The ip or hostname for proxies and spawners to use
+# for connecting to the Hub.
+#
+# Use when the bind address (`hub_ip`) is 0.0.0.0, :: or otherwise different
+# from the connect address.
+#
+# Default: when `hub_ip` is 0.0.0.0 or ::, use `socket.gethostname()`,
+# otherwise use `hub_ip`.
+#
+# Note: Some spawners or proxy implementations might not support hostnames. Check your
+# spawner or proxy documentation to see if they have extra requirements.
+#
+# .. versionadded:: 0.8
+# Default: ''
+# c.JupyterHub.hub_connect_ip = ''
+
+## DEPRECATED
+#
+# Use hub_connect_url
+#
+# .. versionadded:: 0.8
+#
+# .. deprecated:: 0.9
+# Use hub_connect_url
+# Default: 0
+# c.JupyterHub.hub_connect_port = 0
+
+## The URL for connecting to the Hub. Spawners, services, and the proxy will use
+# this URL to talk to the Hub.
+#
+# Only needs to be specified if the default hub URL is not connectable (e.g.
+# using a unix+http:// bind url).
+#
+# .. seealso::
+# JupyterHub.hub_connect_ip
+# JupyterHub.hub_bind_url
+#
+# .. versionadded:: 0.9
+# Default: ''
+# c.JupyterHub.hub_connect_url = ''
+
+## The ip address for the Hub process to *bind* to.
+#
+# By default, the hub listens on localhost only. This address must be accessible from
+# the proxy and user servers. You may need to set this to a public ip or '' for all
+# interfaces if the proxy or user servers are in containers or on a different host.
+#
+# See `hub_connect_ip` for cases where the bind and connect address should differ,
+# or `hub_bind_url` for setting the full bind URL.
+# Default: '127.0.0.1'
+# c.JupyterHub.hub_ip = '127.0.0.1'
+
+## The internal port for the Hub process.
+#
+# This is the internal port of the hub itself. It should never be accessed directly.
+# See JupyterHub.port for the public port to use when accessing jupyterhub.
+# It is rare that this port should be set except in cases of port conflict.
+#
+# See also `hub_ip` for the ip and `hub_bind_url` for setting the full
+# bind URL.
+# Default: 8081
+# c.JupyterHub.hub_port = 8081
+
+## The routing prefix for the Hub itself.
+#
+# Override to send only a subset of traffic to the Hub. Default is to use the
+# Hub as the default route for all requests.
+#
+# This is necessary for normal jupyterhub operation, as the Hub must receive
+# requests for e.g. `/user/:name` when the user's server is not running.
+#
+# However, some deployments using only the JupyterHub API may want to handle
+# these events themselves, in which case they can register their own default
+# target with the proxy and set e.g. `hub_routespec = /hub/` to serve only the
+# hub's own pages, or even `/hub/api/` for api-only operation.
+#
+# Note: hub_routespec must include the base_url, if any.
+#
+# .. versionadded:: 1.4
+# Default: '/'
+# c.JupyterHub.hub_routespec = '/'
+
+## Trigger implicit spawns after this many seconds.
+#
+# When a user visits a URL for a server that's not running,
+# they are shown a page indicating that the requested server
+# is not running with a button to spawn the server.
+#
+# Setting this to a positive value will redirect the user
+# after this many seconds, effectively clicking this button
+# automatically for the users,
+# automatically beginning the spawn process.
+#
+# Warning: this can result in errors and surprising behavior
+# when sharing access URLs to actual servers,
+# since the wrong server is likely to be started.
+# Default: 0
+# c.JupyterHub.implicit_spawn_seconds = 0
+
+## Timeout (in seconds) to wait for spawners to initialize
+#
+# Checking if spawners are healthy can take a long time if many spawners are
+# active at hub start time.
+#
+# If it takes longer than this timeout to check, init_spawner will be left to
+# complete in the background and the http server is allowed to start.
+#
+# A timeout of -1 means wait forever, which can mean a slow startup of the Hub
+# but ensures that the Hub is fully consistent by the time it starts responding
+# to requests. This matches the behavior of jupyterhub 1.0.
+#
+# .. versionadded: 1.1.0
+# Default: 10
+# c.JupyterHub.init_spawners_timeout = 10
+
+## The location to store certificates automatically created by
+# JupyterHub.
+#
+# Use with internal_ssl
+# Default: 'internal-ssl'
+# c.JupyterHub.internal_certs_location = 'internal-ssl'
+
+## Enable SSL for all internal communication
+#
+# This enables end-to-end encryption between all JupyterHub components.
+# JupyterHub will automatically create the necessary certificate
+# authority and sign notebook certificates as they're created.
+# Default: False
+# c.JupyterHub.internal_ssl = False
+
+## The public facing ip of the whole JupyterHub application
+# (specifically referred to as the proxy).
+#
+# This is the address on which the proxy will listen. The default is to
+# listen on all interfaces. This is the only address through which JupyterHub
+# should be accessed by users.
+# Default: ''
+# c.JupyterHub.ip = ''
+
+## Supply extra arguments that will be passed to Jinja environment.
+# Default: {}
+# c.JupyterHub.jinja_environment_options = {}
+
+## Interval (in seconds) at which to update last-activity timestamps.
+# Default: 300
+# c.JupyterHub.last_activity_interval = 300
+
+## Dict of `{'group': {'users':['usernames'], 'properties': {}}` to load at
+# startup.
+#
+# Example::
+#
+# c.JupyterHub.load_groups = {
+# 'groupname': {
+# 'users': ['usernames'],
+# 'properties': {'key': 'value'},
+# },
+# }
+#
+# This strictly *adds* groups and users to groups. Properties, if defined,
+# replace all existing properties.
+#
+# Loading one set of groups, then starting JupyterHub again with a different set
+# will not remove users or groups from previous launches. That must be done
+# through the API.
+#
+# .. versionchanged:: 3.2
+# Changed format of group from list of usernames to dict
+# Default: {}
+# c.JupyterHub.load_groups = {}
+
+## List of predefined role dictionaries to load at startup.
+#
+# For instance::
+#
+# load_roles = [
+# {
+# 'name': 'teacher',
+# 'description': 'Access to users' information and group membership',
+# 'scopes': ['users', 'groups'],
+# 'users': ['cyclops', 'gandalf'],
+# 'services': [],
+# 'groups': []
+# }
+# ]
+#
+# All keys apart from 'name' are optional.
+# See all the available scopes in the JupyterHub REST API documentation.
+#
+# Default roles are defined in roles.py.
+# Default: []
+# c.JupyterHub.load_roles = []
+
+## The date format used by logging formatters for %(asctime)s
+# See also: Application.log_datefmt
+# c.JupyterHub.log_datefmt = '%Y-%m-%d %H:%M:%S'
+
+## The Logging format template
+# See also: Application.log_format
+# c.JupyterHub.log_format = '[%(name)s]%(highlevel)s %(message)s'
+
+## Set the log level by value or name.
+# See also: Application.log_level
+# c.JupyterHub.log_level = 30
+
+##
+# See also: Application.logging_config
+# c.JupyterHub.logging_config = {}
+
+## Specify path to a logo image to override the Jupyter logo in the banner.
+# Default: ''
+# c.JupyterHub.logo_file = ''
+
+## Maximum number of concurrent named servers that can be created by a user at a
+# time.
+#
+# Setting this can limit the total resources a user can consume.
+#
+# If set to 0, no limit is enforced.
+#
+# Can be an integer or a callable/awaitable based on the handler object:
+#
+# ::
+#
+# def named_server_limit_per_user_fn(handler):
+# user = handler.current_user
+# if user and user.admin:
+# return 0
+# return 5
+#
+# c.JupyterHub.named_server_limit_per_user = named_server_limit_per_user_fn
+# Default: 0
+# c.JupyterHub.named_server_limit_per_user = 0
+
+## Expiry (in seconds) of OAuth access tokens.
+#
+# The default is to expire when the cookie storing them expires,
+# according to `cookie_max_age_days` config.
+#
+# These are the tokens stored in cookies when you visit
+# a single-user server or service.
+# When they expire, you must re-authenticate with the Hub,
+# even if your Hub authentication is still valid.
+# If your Hub authentication is valid,
+# logging in may be a transparent redirect as you refresh the page.
+#
+# This does not affect JupyterHub API tokens in general,
+# which do not expire by default.
+# Only tokens issued during the oauth flow
+# accessing services and single-user servers are affected.
+#
+# .. versionadded:: 1.4
+# OAuth token expires_in was not previously configurable.
+# .. versionchanged:: 1.4
+# Default now uses cookie_max_age_days so that oauth tokens
+# which are generally stored in cookies,
+# expire when the cookies storing them expire.
+# Previously, it was one hour.
+# Default: 0
+# c.JupyterHub.oauth_token_expires_in = 0
+
+## File to write PID
+# Useful for daemonizing JupyterHub.
+# Default: ''
+# c.JupyterHub.pid_file = ''
+
+## The public facing port of the proxy.
+#
+# This is the port on which the proxy will listen.
+# This is the only port through which JupyterHub
+# should be accessed by users.
+# Default: 8000
+# c.JupyterHub.port = 8000
+
+## DEPRECATED since version 0.8 : Use ConfigurableHTTPProxy.api_url
+# Default: ''
+# c.JupyterHub.proxy_api_ip = ''
+
+## DEPRECATED since version 0.8 : Use ConfigurableHTTPProxy.api_url
+# Default: 0
+# c.JupyterHub.proxy_api_port = 0
+
+## DEPRECATED since version 0.8: Use ConfigurableHTTPProxy.auth_token
+# Default: ''
+# c.JupyterHub.proxy_auth_token = ''
+
+## DEPRECATED since version 0.8: Use ConfigurableHTTPProxy.check_running_interval
+# Default: 5
+# c.JupyterHub.proxy_check_interval = 5
+
+## The class to use for configuring the JupyterHub proxy.
+#
+# Should be a subclass of :class:`jupyterhub.proxy.Proxy`.
+#
+# .. versionchanged:: 1.0
+# proxies may be registered via entry points,
+# e.g. `c.JupyterHub.proxy_class = 'traefik'`
+#
+# Currently installed:
+# - configurable-http-proxy: jupyterhub.proxy.ConfigurableHTTPProxy
+# - default: jupyterhub.proxy.ConfigurableHTTPProxy
+# Default: 'jupyterhub.proxy.ConfigurableHTTPProxy'
+# c.JupyterHub.proxy_class = 'jupyterhub.proxy.ConfigurableHTTPProxy'
+
+## DEPRECATED since version 0.8. Use ConfigurableHTTPProxy.command
+# Default: []
+# c.JupyterHub.proxy_cmd = []
+
+## Set the public URL of JupyterHub
+#
+# This will skip any detection of URL and protocol from requests,
+# which isn't always correct when JupyterHub is behind
+# multiple layers of proxies, etc.
+# Usually the failure is detecting http when it's really https.
+#
+# Should include the full, public URL of JupyterHub,
+# including the public-facing base_url prefix
+# (i.e. it should include a trailing slash), e.g.
+# https://jupyterhub.example.org/prefix/
+# Default: ''
+c.JupyterHub.public_url = 'https://jupyterhub.ub.unibas.ch/'
+
+## Recreate all certificates used within JupyterHub on restart.
+#
+# Note: enabling this feature requires restarting all notebook servers.
+#
+# Use with internal_ssl
+# Default: False
+# c.JupyterHub.recreate_internal_certs = False
+
+## Redirect user to server (if running), instead of control panel.
+# Default: True
+# c.JupyterHub.redirect_to_server = True
+
+## Purge and reset the database.
+# Default: False
+# c.JupyterHub.reset_db = False
+
+## Interval (in seconds) at which to check connectivity of services with web
+# endpoints.
+# Default: 60
+# c.JupyterHub.service_check_interval = 60
+
+## Dict of token:servicename to be loaded into the database.
+#
+# Allows ahead-of-time generation of API tokens for use by externally
+# managed services.
+# Default: {}
+# c.JupyterHub.service_tokens = {}
+
+## List of service specification dictionaries.
+#
+# A service
+#
+# For instance::
+#
+# services = [
+# {
+# 'name': 'cull_idle',
+# 'command': ['/path/to/cull_idle_servers.py'],
+# },
+# {
+# 'name': 'formgrader',
+# 'url': 'http://127.0.0.1:1234',
+# 'api_token': 'super-secret',
+# 'environment':
+# }
+# ]
+# Default: []
+# c.JupyterHub.services = []
+
+## Instead of starting the Application, dump configuration to stdout
+# See also: Application.show_config
+# c.JupyterHub.show_config = False
+
+## Instead of starting the Application, dump configuration to stdout (as JSON)
+# See also: Application.show_config_json
+# c.JupyterHub.show_config_json = False
+
+## Shuts down all user servers on logout
+# Default: False
+# c.JupyterHub.shutdown_on_logout = False
+
+## The class to use for spawning single-user servers.
+#
+# Should be a subclass of :class:`jupyterhub.spawner.Spawner`.
+#
+# .. versionchanged:: 1.0
+# spawners may be registered via entry points,
+# e.g. `c.JupyterHub.spawner_class = 'localprocess'`
+#
+# Currently installed:
+# - default: jupyterhub.spawner.LocalProcessSpawner
+# - localprocess: jupyterhub.spawner.LocalProcessSpawner
+# - simple: jupyterhub.spawner.SimpleLocalProcessSpawner
+# Default: 'jupyterhub.spawner.LocalProcessSpawner'
+c.JupyterHub.spawner_class = 'jupyterhub.spawner.DockerSpawner'
+
+## Path to SSL certificate file for the public facing interface of the proxy
+#
+# When setting this, you should also set ssl_key
+# Default: ''
+# c.JupyterHub.ssl_cert = ''
+
+## Path to SSL key file for the public facing interface of the proxy
+#
+# When setting this, you should also set ssl_cert
+# Default: ''
+# c.JupyterHub.ssl_key = ''
+
+## Host to send statsd metrics to. An empty string (the default) disables sending
+# metrics.
+# Default: ''
+# c.JupyterHub.statsd_host = ''
+
+## Port on which to send statsd metrics about the hub
+# Default: 8125
+# c.JupyterHub.statsd_port = 8125
+
+## Prefix to use for all metrics sent by jupyterhub to statsd
+# Default: 'jupyterhub'
+# c.JupyterHub.statsd_prefix = 'jupyterhub'
+
+## Hook for constructing subdomains for users and services. Only used when
+# `JupyterHub.subdomain_host` is set.
+#
+# There are two predefined hooks, which can be selected by name:
+#
+# - 'legacy' (deprecated) - 'idna' (default, more robust. No change for _most_
+# usernames)
+#
+# Otherwise, should be a function which must not be async. A custom
+# subdomain_hook should have the signature:
+#
+# def subdomain_hook(name, domain, kind) -> str:
+# ...
+#
+# and should return a unique, valid domain name for all usernames.
+#
+# - `name` is the original name, which may need escaping to be safe as a domain
+# name label - `domain` is the domain of the Hub itself - `kind` will be one of
+# 'user' or 'service'
+#
+# JupyterHub itself puts very little limit on usernames to accommodate a wide
+# variety of Authenticators, but your identity provider is likely much more
+# strict, allowing you to make assumptions about the name.
+#
+# The 'idna' hook should produce a valid domain name for any user, using IDNA
+# encoding for unicode usernames, and a truncate-and-hash approach for any
+# usernames that can't be easily encoded into a domain component.
+#
+# .. versionadded:: 5.0
+# Default: 'idna'
+# c.JupyterHub.subdomain_hook = 'idna'
+
+## Run single-user servers on subdomains of this host.
+#
+# This should be the full `https://hub.domain.tld[:port]`.
+#
+# Provides additional cross-site protections for javascript served by
+# single-user servers.
+#
+# Requires `<username>.hub.domain.tld` to resolve to the same host as
+# `hub.domain.tld`.
+#
+# In general, this is most easily achieved with wildcard DNS.
+#
+# When using SSL (i.e. always) this also requires a wildcard SSL
+# certificate.
+# Default: ''
+# c.JupyterHub.subdomain_host = ''
+
+## Paths to search for jinja templates, before using the default templates.
+# Default: []
+# c.JupyterHub.template_paths = []
+
+## Extra variables to be passed into jinja templates.
+#
+# Values in dict may contain callable objects.
+# If value is callable, the current user is passed as argument.
+#
+# Example::
+#
+# def callable_value(user):
+# # user is generated by handlers.base.get_current_user
+# with open("/tmp/file.txt", "r") as f:
+# ret = f.read()
+# ret = ret.replace("<username>", user.name)
+# return ret
+#
+# c.JupyterHub.template_vars = {
+# "key1": "value1",
+# "key2": callable_value,
+# }
+# Default: {}
+# c.JupyterHub.template_vars = {}
+
+## Set the maximum expiration (in seconds) of tokens created via the API.
+#
+# Set to any positive value to disallow creation of tokens with no expiration.
+#
+# 0 (default) = no limit.
+#
+# Does not affect:
+#
+# - Server API tokens ($JUPYTERHUB_API_TOKEN is tied to lifetime of the server)
+# - Tokens issued during oauth (use `oauth_token_expires_in`) - Tokens created
+# via the API before configuring this limit
+#
+# .. versionadded:: 5.1
+# Default: 0
+# c.JupyterHub.token_expires_in_max_seconds = 0
+
+## Extra settings overrides to pass to the tornado application.
+# Default: {}
+# c.JupyterHub.tornado_settings = {}
+
+## Trust user-provided tokens (via JupyterHub.service_tokens)
+# to have good entropy.
+#
+# If you are not inserting additional tokens via configuration file,
+# this flag has no effect.
+#
+# In JupyterHub 0.8, internally generated tokens do not
+# pass through additional hashing because the hashing is costly
+# and does not increase the entropy of already-good UUIDs.
+#
+# User-provided tokens, on the other hand, are not trusted to have good entropy by default,
+# and are passed through many rounds of hashing to stretch the entropy of the key
+# (i.e. user-provided tokens are treated as passwords instead of random keys).
+# These keys are more costly to check.
+#
+# If your inserted tokens are generated by a good-quality mechanism,
+# e.g. `openssl rand -hex 32`, then you can set this flag to True
+# to reduce the cost of checking authentication tokens.
+# Default: False
+# c.JupyterHub.trust_user_provided_tokens = False
+
+## Names to include in the subject alternative name.
+#
+# These names will be used for server name verification. This is useful
+# if JupyterHub is being run behind a reverse proxy or services using ssl
+# are on different hosts.
+#
+# Use with internal_ssl
+# Default: []
+# c.JupyterHub.trusted_alt_names = []
+
+## Downstream proxy IP addresses to trust.
+#
+# This sets the list of IP addresses that are trusted and skipped when processing
+# the `X-Forwarded-For` header. For example, if an external proxy is used for TLS
+# termination, its IP address should be added to this list to ensure the correct
+# client IP addresses are recorded in the logs instead of the proxy server's IP
+# address.
+# Default: []
+# c.JupyterHub.trusted_downstream_ips = []
+
+## Upgrade the database automatically on start.
+#
+# Only safe if database is regularly backed up.
+# Only SQLite databases will be backed up to a local file automatically.
+# Default: False
+# c.JupyterHub.upgrade_db = False
+
+## Return 503 rather than 424 when request comes in for a non-running server.
+#
+# Prior to JupyterHub 2.0, we returned a 503 when any request came in for a user
+# server that was currently not running. By default, JupyterHub 2.0 will return
+# a 424 - this makes operational metric dashboards more useful.
+#
+# JupyterLab < 3.2 expected the 503 to know if the user server is no longer
+# running, and prompted the user to start their server. Set this config to true
+# to retain the old behavior, so JupyterLab < 3.2 can continue to show the
+# appropriate UI when the user server is stopped.
+#
+# This option will be removed in a future release.
+# Default: False
+# c.JupyterHub.use_legacy_stopped_server_status_code = False
+
+## Callable to affect behavior of /user-redirect/
+#
+# Receives 4 parameters: 1. path - URL path that was provided after /user-
+# redirect/ 2. request - A Tornado HTTPServerRequest representing the current
+# request. 3. user - The currently authenticated user. 4. base_url - The
+# base_url of the current hub, for relative redirects
+#
+# It should return the new URL to redirect to, or None to preserve current
+# behavior.
+# Default: None
+# c.JupyterHub.user_redirect_hook = None
+
+#------------------------------------------------------------------------------
+# CryptKeeper(SingletonConfigurable) configuration
+#------------------------------------------------------------------------------
+## Encapsulate encryption configuration
+#
+# Use via the encryption_config singleton below.
+
+# Default: []
+# c.CryptKeeper.keys = []
+
+## The number of threads to allocate for encryption
+# Default: 16
+# c.CryptKeeper.n_threads = 16
+
+#------------------------------------------------------------------------------
+# Authenticator(LoggingConfigurable) configuration
+#------------------------------------------------------------------------------
+## Base class for implementing an authentication provider for JupyterHub
+
+## Set of users that will be granted admin rights on this JupyterHub.
+#
+# Note:
+#
+# As of JupyterHub 2.0,
+# full admin rights should not be required,
+# and more precise permissions can be managed via roles.
+#
+# Caution:
+#
+# Adding users to `admin_users` can only *grant* admin rights,
+# removing a username from the admin_users set **DOES NOT** remove admin rights previously granted.
+#
+# For an authoritative, restricted set of admins,
+# assign explicit membership of the `admin` *role*::
+#
+# c.JupyterHub.load_roles = [
+# {
+# "name": "admin",
+# "users": ["admin1", "..."],
+# }
+# ]
+#
+# Admin users can take every possible action on behalf of all users, for
+# example:
+#
+# - Use the admin panel to see list of users logged in - Add / remove users in
+# some authenticators - Restart / halt the hub - Start / stop users' single-user
+# servers - Can access each individual users' single-user server
+#
+# Admin access should be treated the same way root access is.
+#
+# Defaults to an empty set, in which case no user has admin access.
+# Default: set()
+# c.Authenticator.admin_users = set()
+
+## Allow every user who can successfully authenticate to access JupyterHub.
+#
+# False by default, which means for most Authenticators, _some_ allow-related
+# configuration is required to allow users to log in.
+#
+# Authenticator subclasses may override the default with e.g.::
+#
+# @default("allow_all")
+# def _default_allow_all(self):
+# # if _any_ auth config (depends on the Authenticator)
+# if self.allowed_users or self.allowed_groups or self.allow_existing_users:
+# return False
+# else:
+# return True
+#
+# .. versionadded:: 5.0
+#
+# .. versionchanged:: 5.0
+# Prior to 5.0, `allow_all` wasn't defined on its own,
+# and was instead implicitly True when no allow config was provided,
+# i.e. `allowed_users` unspecified or empty on the base Authenticator class.
+#
+# To preserve pre-5.0 behavior,
+# set `allow_all = True` if you have no other allow configuration.
+# Default: False
+c.Authenticator.allow_all = True
+
+## Allow existing users to login.
+#
+# Defaults to True if `allowed_users` is set for historical reasons, and False
+# otherwise.
+#
+# With this enabled, all users present in the JupyterHub database are allowed to
+# login. This has the effect of any user who has _previously_ been allowed to
+# login via any means will continue to be allowed until the user is deleted via
+# the /hub/admin page or REST API.
+#
+# .. warning::
+#
+# Before enabling this you should review the existing users in the
+# JupyterHub admin panel at `/hub/admin`. You may find users existing
+# there because they have previously been declared in config such as
+# `allowed_users` or allowed to sign in.
+#
+# .. warning::
+#
+# When this is enabled and you wish to remove access for one or more
+# users previously allowed, you must make sure that they
+# are removed from the jupyterhub database. This can be tricky to do
+# if you stop allowing an externally managed group of users for example.
+#
+# With this enabled, JupyterHub admin users can visit `/hub/admin` or use
+# JupyterHub's REST API to add and remove users to manage who can login.
+#
+# .. versionadded:: 5.0
+# Default: False
+# c.Authenticator.allow_existing_users = False
+
+## Set of usernames that are allowed to log in.
+#
+# Use this to limit which authenticated users may login. Default behavior: only
+# users in this set are allowed.
+#
+# If empty, does not perform any restriction, in which case any authenticated
+# user is allowed.
+#
+# Authenticators may extend :meth:`.Authenticator.check_allowed` to combine
+# `allowed_users` with other configuration to either expand or restrict access.
+#
+# .. versionchanged:: 1.2
+# `Authenticator.whitelist` renamed to `allowed_users`
+# Default: set()
+# c.Authenticator.allowed_users = set()
+
+## Is there any allow config?
+#
+# Used to show a warning if it looks like nobody can access the Hub,
+# which can happen when upgrading to JupyterHub 5,
+# now that `allow_all` defaults to False.
+#
+# Deployments can set this explicitly to True to suppress
+# the "No allow config found" warning.
+#
+# Will be True if any config tagged with `.tag(allow_config=True)`
+# or starts with `allow` is truthy.
+#
+# .. versionadded:: 5.0
+# Default: False
+# c.Authenticator.any_allow_config = False
+
+## The max age (in seconds) of authentication info
+# before forcing a refresh of user auth info.
+#
+# Refreshing auth info allows, e.g. requesting/re-validating auth
+# tokens.
+#
+# See :meth:`.refresh_user` for what happens when user auth info is refreshed
+# (nothing by default).
+# Default: 300
+# c.Authenticator.auth_refresh_age = 300
+
+## Automatically begin the login process
+#
+# rather than starting with a "Login with..." link at `/hub/login`
+#
+# To work, `.login_url()` must give a URL other than the default `/hub/login`,
+# such as an oauth handler or another automatic login handler,
+# registered with `.get_handlers()`.
+#
+# .. versionadded:: 0.8
+# Default: False
+# c.Authenticator.auto_login = False
+
+## Automatically begin login process for OAuth2 authorization requests
+#
+# When another application is using JupyterHub as OAuth2 provider, it sends
+# users to `/hub/api/oauth2/authorize`. If the user isn't logged in already, and
+# auto_login is not set, the user will be dumped on the hub's home page, without
+# any context on what to do next.
+#
+# Setting this to true will automatically redirect users to login if they aren't
+# logged in *only* on the `/hub/api/oauth2/authorize` endpoint.
+#
+# .. versionadded:: 1.5
+# Default: False
+# c.Authenticator.auto_login_oauth2_authorize = False
+
+## Set of usernames that are not allowed to log in.
+#
+# Use this with supported authenticators to restrict which users can not log in.
+# This is an additional block list that further restricts users, beyond whatever
+# restrictions the authenticator has in place.
+#
+# If empty, does not perform any additional restriction.
+#
+# .. versionadded: 0.9
+#
+# .. versionchanged:: 5.2
+# Users blocked via `blocked_users` that may have logged in in the past
+# have all permissions and group membership revoked
+# and all servers stopped at JupyterHub startup.
+# Previously, User permissions (e.g. API tokens)
+# and servers were unaffected and required additional
+# administrator operations to block after a user is added to `blocked_users`.
+#
+# .. versionchanged:: 1.2
+# `Authenticator.blacklist` renamed to `blocked_users`
+# Default: set()
+# c.Authenticator.blocked_users = set()
+
+## Delete any users from the database that do not pass validation
+#
+# When JupyterHub starts, `.add_user` will be called
+# on each user in the database to verify that all users are still valid.
+#
+# If `delete_invalid_users` is True,
+# any users that do not pass validation will be deleted from the database.
+# Use this if users might be deleted from an external system,
+# such as local user accounts.
+#
+# If False (default), invalid users remain in the Hub's database
+# and a warning will be issued.
+# This is the default to avoid data loss due to config changes.
+# Default: False
+# c.Authenticator.delete_invalid_users = False
+
+## Enable persisting auth_state (if available).
+#
+# auth_state will be encrypted and stored in the Hub's database.
+# This can include things like authentication tokens, etc.
+# to be passed to Spawners as environment variables.
+#
+# Encrypting auth_state requires the cryptography package.
+#
+# Additionally, the JUPYTERHUB_CRYPT_KEY environment variable must
+# contain one (or more, separated by ;) 32B encryption keys.
+# These can be either base64 or hex-encoded.
+#
+# If encryption is unavailable, auth_state cannot be persisted.
+#
+# New in JupyterHub 0.8
+# Default: False
+# c.Authenticator.enable_auth_state = False
+
+## Let authenticator manage user groups
+#
+# If True, Authenticator.authenticate and/or .refresh_user
+# may return a list of group names in the 'groups' field,
+# which will be assigned to the user.
+#
+# All group-assignment APIs are disabled if this is True.
+# Default: False
+# c.Authenticator.manage_groups = False
+
+## Let authenticator manage roles
+#
+# If True, Authenticator.authenticate and/or .refresh_user
+# may return a list of roles in the 'roles' field,
+# which will be added to the database.
+#
+# When enabled, all role management will be handled by the
+# authenticator; in particular, assignment of roles via
+# `JupyterHub.load_roles` traitlet will not be possible.
+#
+# .. versionadded:: 5.0
+# Default: False
+# c.Authenticator.manage_roles = False
+
+## The prompt string for the extra OTP (One Time Password) field.
+#
+# .. versionadded:: 5.0
+# Default: 'OTP:'
+# c.Authenticator.otp_prompt = 'OTP:'
+
+## An optional hook function that you can implement to do some bootstrapping work
+# during authentication. For example, loading user account details from an
+# external system.
+#
+# This function is called after the user has passed all authentication checks
+# and is ready to successfully authenticate. This function must return the
+# auth_model dict reguardless of changes to it. The hook is called with 3
+# positional arguments: `(authenticator, handler, auth_model)`.
+#
+# This may be a coroutine.
+#
+# .. versionadded: 1.0
+#
+# Example::
+#
+# import os
+# import pwd
+# def my_hook(authenticator, handler, auth_model):
+# user_data = pwd.getpwnam(auth_model['name'])
+# spawn_data = {
+# 'pw_data': user_data
+# 'gid_list': os.getgrouplist(auth_model['name'], user_data.pw_gid)
+# }
+#
+# if auth_model['auth_state'] is None:
+# auth_model['auth_state'] = {}
+# auth_model['auth_state']['spawn_data'] = spawn_data
+#
+# return auth_model
+#
+# c.Authenticator.post_auth_hook = my_hook
+# Default: None
+# c.Authenticator.post_auth_hook = None
+
+## Force refresh of auth prior to spawn.
+#
+# This forces :meth:`.refresh_user` to be called prior to launching
+# a server, to ensure that auth state is up-to-date.
+#
+# This can be important when e.g. auth tokens that may have expired
+# are passed to the spawner via environment variables from auth_state.
+#
+# If refresh_user cannot refresh the user auth data,
+# launch will fail until the user logs in again.
+# Default: False
+# c.Authenticator.refresh_pre_spawn = False
+
+## Prompt for OTP (One Time Password) in the login form.
+#
+# .. versionadded:: 5.0
+# Default: False
+# c.Authenticator.request_otp = False
+
+## Reset managed roles to result of `load_managed_roles()` on startup.
+#
+# If True:
+# - stale managed roles will be removed,
+# - stale assignments to managed roles will be removed.
+#
+# Any role not present in `load_managed_roles()` will be considered
+# 'stale'.
+#
+# The 'stale' status for role assignments is also determined from
+# `load_managed_roles()` result:
+#
+# - user role assignments status will depend on whether the `users` key
+# is defined or not:
+#
+# * if a list is defined under the `users` key and the user is not listed, then the user role assignment will be considered 'stale',
+# * if the `users` key is not provided, the user role assignment will be preserved;
+# - service and group role assignments will be considered 'stale':
+#
+# * if not included in the `services` and `groups` list,
+# * if the `services` and `groups` keys are not provided.
+#
+# .. versionadded:: 5.0
+# Default: False
+# c.Authenticator.reset_managed_roles_on_startup = False
+
+## Dictionary mapping authenticator usernames to JupyterHub users.
+#
+# Primarily used to normalize OAuth user names to local users.
+# Default: {}
+# c.Authenticator.username_map = {}
+
+## Regular expression pattern that all valid usernames must match.
+#
+# If a username does not match the pattern specified here, authentication will
+# not be attempted.
+#
+# If not set, allow any username.
+# Default: ''
+# c.Authenticator.username_pattern = ''
+
+## Deprecated, use `Authenticator.allowed_users`
+# Default: set()
+# c.Authenticator.whitelist = set()
+
+#------------------------------------------------------------------------------
+# DummyAuthenticator(Authenticator) configuration
+#------------------------------------------------------------------------------
+## Dummy Authenticator for testing
+#
+# By default, any username + password is allowed
+# If a non-empty password is set, any username will be allowed
+# if it logs in with that password.
+#
+# .. versionadded:: 1.0
+#
+# .. versionadded:: 5.0
+# `allow_all` defaults to True,
+# preserving default behavior.
+
+##
+# See also: Authenticator.admin_users
+# c.DummyAuthenticator.admin_users = set()
+
+##
+# See also: Authenticator.allow_all
+# c.DummyAuthenticator.allow_all = False
+
+##
+# See also: Authenticator.allow_existing_users
+# c.DummyAuthenticator.allow_existing_users = False
+
+##
+# See also: Authenticator.allowed_users
+# c.DummyAuthenticator.allowed_users = set()
+
+## Is there any allow config?
+# See also: Authenticator.any_allow_config
+# c.DummyAuthenticator.any_allow_config = False
+
+## The max age (in seconds) of authentication info
+# See also: Authenticator.auth_refresh_age
+# c.DummyAuthenticator.auth_refresh_age = 300
+
+## Automatically begin the login process
+# See also: Authenticator.auto_login
+# c.DummyAuthenticator.auto_login = False
+
+##
+# See also: Authenticator.auto_login_oauth2_authorize
+# c.DummyAuthenticator.auto_login_oauth2_authorize = False
+
+##
+# See also: Authenticator.blocked_users
+# c.DummyAuthenticator.blocked_users = set()
+
+## Delete any users from the database that do not pass validation
+# See also: Authenticator.delete_invalid_users
+# c.DummyAuthenticator.delete_invalid_users = False
+
+## Enable persisting auth_state (if available).
+# See also: Authenticator.enable_auth_state
+# c.DummyAuthenticator.enable_auth_state = False
+
+## Let authenticator manage user groups
+# See also: Authenticator.manage_groups
+# c.DummyAuthenticator.manage_groups = False
+
+## Let authenticator manage roles
+# See also: Authenticator.manage_roles
+# c.DummyAuthenticator.manage_roles = False
+
+##
+# See also: Authenticator.otp_prompt
+# c.DummyAuthenticator.otp_prompt = 'OTP:'
+
+## Set a global password for all users wanting to log in.
+#
+# This allows users with any username to log in with the same static password.
+# Default: ''
+# c.DummyAuthenticator.password = ''
+
+##
+# See also: Authenticator.post_auth_hook
+# c.DummyAuthenticator.post_auth_hook = None
+
+## Force refresh of auth prior to spawn.
+# See also: Authenticator.refresh_pre_spawn
+# c.DummyAuthenticator.refresh_pre_spawn = False
+
+##
+# See also: Authenticator.request_otp
+# c.DummyAuthenticator.request_otp = False
+
+## Reset managed roles to result of `load_managed_roles()` on startup.
+# See also: Authenticator.reset_managed_roles_on_startup
+# c.DummyAuthenticator.reset_managed_roles_on_startup = False
+
+## Dictionary mapping authenticator usernames to JupyterHub users.
+# See also: Authenticator.username_map
+# c.DummyAuthenticator.username_map = {}
+
+##
+# See also: Authenticator.username_pattern
+# c.DummyAuthenticator.username_pattern = ''
+
+## Deprecated, use `Authenticator.allowed_users`
+# See also: Authenticator.whitelist
+# c.DummyAuthenticator.whitelist = set()
+
+#------------------------------------------------------------------------------
+# Proxy(LoggingConfigurable) configuration
+#------------------------------------------------------------------------------
+## Base class for configurable proxies that JupyterHub can use.
+#
+# A proxy implementation should subclass this and must define the following
+# methods:
+#
+# - :meth:`.get_all_routes` return a dictionary of all JupyterHub-related routes
+# - :meth:`.add_route` adds a route
+# - :meth:`.delete_route` deletes a route
+#
+# In addition to these, the following method(s) may need to be implemented:
+#
+# - :meth:`.start` start the proxy, if it should be launched by the Hub
+# instead of externally managed.
+# If the proxy is externally managed, it should set :attr:`should_start` to False.
+# - :meth:`.stop` stop the proxy. Only used if :meth:`.start` is also used.
+#
+# And the following method(s) are optional, but can be provided:
+#
+# - :meth:`.get_route` gets a single route.
+# There is a default implementation that extracts data from :meth:`.get_all_routes`,
+# but implementations may choose to provide a more efficient implementation
+# of fetching a single route.
+
+## Additional routes to be maintained in the proxy.
+#
+# A dictionary with a route specification as key, and a URL as target. The hub
+# will ensure this route is present in the proxy.
+#
+# If the hub is running in host based mode (with JupyterHub.subdomain_host set),
+# the routespec *must* have a domain component (example.com/my-url/). If the hub
+# is not running in host based mode, the routespec *must not* have a domain
+# component (/my-url/).
+#
+# Helpful when the hub is running in API-only mode.
+# Default: {}
+# c.Proxy.extra_routes = {}
+
+## Should the Hub start the proxy
+#
+# If True, the Hub will start the proxy and stop it.
+# Set to False if the proxy is managed externally,
+# such as by systemd, docker, or another service manager.
+# Default: True
+# c.Proxy.should_start = True
+
+#------------------------------------------------------------------------------
+# ConfigurableHTTPProxy(Proxy) configuration
+#------------------------------------------------------------------------------
+## Proxy implementation for the default configurable-http-proxy.
+#
+# This is the default proxy implementation
+# for running the nodejs proxy `configurable-http-proxy`.
+#
+# If the proxy should not be run as a subprocess of the Hub,
+# (e.g. in a separate container),
+# set::
+#
+# c.ConfigurableHTTPProxy.should_start = False
+
+## The ip (or hostname) of the proxy's API endpoint
+# Default: ''
+# c.ConfigurableHTTPProxy.api_url = ''
+
+## The Proxy auth token
+#
+# Loaded from the CONFIGPROXY_AUTH_TOKEN env variable by default.
+# Default: ''
+# c.ConfigurableHTTPProxy.auth_token = ''
+
+## Interval (in seconds) at which to check if the proxy is running.
+# Default: 5
+# c.ConfigurableHTTPProxy.check_running_interval = 5
+
+## The command to start the proxy
+# Default: ['configurable-http-proxy']
+# c.ConfigurableHTTPProxy.command = ['configurable-http-proxy']
+
+## The number of requests allowed to be concurrently outstanding to the proxy
+#
+# Limiting this number avoids potential timeout errors by sending too many
+# requests to update the proxy at once
+# Default: 10
+# c.ConfigurableHTTPProxy.concurrency = 10
+
+## Add debug-level logging to the Proxy.
+# Default: False
+# c.ConfigurableHTTPProxy.debug = False
+
+##
+# See also: Proxy.extra_routes
+# c.ConfigurableHTTPProxy.extra_routes = {}
+
+## Proxy log level
+# Choices: any of ['debug', 'info', 'warn', 'error'] (case-insensitive)
+# Default: 'info'
+# c.ConfigurableHTTPProxy.log_level = 'info'
+
+## File in which to write the PID of the proxy process.
+# Default: 'jupyterhub-proxy.pid'
+# c.ConfigurableHTTPProxy.pid_file = 'jupyterhub-proxy.pid'
+
+## Should the Hub start the proxy
+# See also: Proxy.should_start
+# c.ConfigurableHTTPProxy.should_start = True
+
+#------------------------------------------------------------------------------
+# NullAuthenticator(Authenticator) configuration
+#------------------------------------------------------------------------------
+## Null Authenticator for JupyterHub
+#
+# For cases where authentication should be disabled,
+# e.g. only allowing access via API tokens.
+#
+# .. versionadded:: 2.0
+
+##
+# See also: Authenticator.admin_users
+# c.NullAuthenticator.admin_users = set()
+
+##
+# See also: Authenticator.allow_all
+# c.NullAuthenticator.allow_all = False
+
+##
+# See also: Authenticator.allow_existing_users
+# c.NullAuthenticator.allow_existing_users = False
+
+##
+# See also: Authenticator.allowed_users
+# c.NullAuthenticator.allowed_users = set()
+
+## Is there any allow config?
+# See also: Authenticator.any_allow_config
+# c.NullAuthenticator.any_allow_config = False
+
+## The max age (in seconds) of authentication info
+# See also: Authenticator.auth_refresh_age
+# c.NullAuthenticator.auth_refresh_age = 300
+
+##
+# See also: Authenticator.auto_login_oauth2_authorize
+# c.NullAuthenticator.auto_login_oauth2_authorize = False
+
+##
+# See also: Authenticator.blocked_users
+# c.NullAuthenticator.blocked_users = set()
+
+## Delete any users from the database that do not pass validation
+# See also: Authenticator.delete_invalid_users
+# c.NullAuthenticator.delete_invalid_users = False
+
+## Enable persisting auth_state (if available).
+# See also: Authenticator.enable_auth_state
+# c.NullAuthenticator.enable_auth_state = False
+
+## Let authenticator manage user groups
+# See also: Authenticator.manage_groups
+# c.NullAuthenticator.manage_groups = False
+
+## Let authenticator manage roles
+# See also: Authenticator.manage_roles
+# c.NullAuthenticator.manage_roles = False
+
+##
+# See also: Authenticator.otp_prompt
+# c.NullAuthenticator.otp_prompt = 'OTP:'
+
+##
+# See also: Authenticator.post_auth_hook
+# c.NullAuthenticator.post_auth_hook = None
+
+## Force refresh of auth prior to spawn.
+# See also: Authenticator.refresh_pre_spawn
+# c.NullAuthenticator.refresh_pre_spawn = False
+
+##
+# See also: Authenticator.request_otp
+# c.NullAuthenticator.request_otp = False
+
+## Reset managed roles to result of `load_managed_roles()` on startup.
+# See also: Authenticator.reset_managed_roles_on_startup
+# c.NullAuthenticator.reset_managed_roles_on_startup = False
+
+## Dictionary mapping authenticator usernames to JupyterHub users.
+# See also: Authenticator.username_map
+# c.NullAuthenticator.username_map = {}
+
+##
+# See also: Authenticator.username_pattern
+# c.NullAuthenticator.username_pattern = ''
+
+## Deprecated, use `Authenticator.allowed_users`
+# See also: Authenticator.whitelist
+# c.NullAuthenticator.whitelist = set()
+
+#------------------------------------------------------------------------------
+# Spawner(LoggingConfigurable) configuration
+#------------------------------------------------------------------------------
+## Base class for spawning single-user notebook servers.
+#
+# Subclass this, and override the following methods:
+#
+# - load_state
+# - get_state
+# - start
+# - stop
+# - poll
+#
+# As JupyterHub supports multiple users, an instance of the Spawner subclass
+# is created for each user. If there are 20 JupyterHub users, there will be 20
+# instances of the subclass.
+
+## Extra arguments to be passed to the single-user server.
+#
+# Some spawners allow shell-style expansion here, allowing you to use
+# environment variables here. Most, including the default, do not. Consult the
+# documentation for your spawner to verify!
+# Default: []
+# c.Spawner.args = []
+
+## An optional hook function that you can implement to pass `auth_state` to the
+# spawner after it has been initialized but before it starts. The `auth_state`
+# dictionary may be set by the `.authenticate()` method of the authenticator.
+# This hook enables you to pass some or all of that information to your spawner.
+#
+# Example::
+#
+# def userdata_hook(spawner, auth_state):
+# spawner.userdata = auth_state["userdata"]
+#
+# c.Spawner.auth_state_hook = userdata_hook
+# Default: None
+# c.Spawner.auth_state_hook = None
+
+## The command used for starting the single-user server.
+#
+# Provide either a string or a list containing the path to the startup script
+# command. Extra arguments, other than this path, should be provided via `args`.
+#
+# This is usually set if you want to start the single-user server in a different
+# python environment (with virtualenv/conda) than JupyterHub itself.
+#
+# Some spawners allow shell-style expansion here, allowing you to use
+# environment variables. Most, including the default, do not. Consult the
+# documentation for your spawner to verify!
+# Default: ['jupyterhub-singleuser']
+# c.Spawner.cmd = ['jupyterhub-singleuser']
+
+## Maximum number of consecutive failures to allow before shutting down
+# JupyterHub.
+#
+# This helps JupyterHub recover from a certain class of problem preventing
+# launch in contexts where the Hub is automatically restarted (e.g. systemd,
+# docker, kubernetes).
+#
+# A limit of 0 means no limit and consecutive failures will not be tracked.
+# Default: 0
+# c.Spawner.consecutive_failure_limit = 0
+
+## Minimum number of cpu-cores a single-user notebook server is guaranteed to
+# have available.
+#
+# If this value is set to 0.5, allows use of 50% of one CPU. If this value is
+# set to 2, allows use of up to 2 CPUs.
+#
+# **This is a configuration setting. Your spawner must implement support for the
+# limit to work.** The default spawner, `LocalProcessSpawner`, does **not**
+# implement this support. A custom spawner **must** add support for this setting
+# for it to be enforced.
+# Default: None
+# c.Spawner.cpu_guarantee = None
+
+## Maximum number of cpu-cores a single-user notebook server is allowed to use.
+#
+# If this value is set to 0.5, allows use of 50% of one CPU. If this value is
+# set to 2, allows use of up to 2 CPUs.
+#
+# The single-user notebook server will never be scheduled by the kernel to use
+# more cpu-cores than this. There is no guarantee that it can access this many
+# cpu-cores.
+#
+# **This is a configuration setting. Your spawner must implement support for the
+# limit to work.** The default spawner, `LocalProcessSpawner`, does **not**
+# implement this support. A custom spawner **must** add support for this setting
+# for it to be enforced.
+# Default: None
+# c.Spawner.cpu_limit = None
+
+## Enable debug-logging of the single-user server
+# Default: False
+# c.Spawner.debug = False
+
+## The URL the single-user server should start in.
+#
+# `{username}` will be expanded to the user's username
+#
+# Example uses:
+#
+# - You can set `notebook_dir` to `/` and `default_url` to `/tree/home/{username}` to allow people to
+# navigate the whole filesystem from their notebook server, but still start in their home directory.
+# - Start with `/notebooks` instead of `/tree` if `default_url` points to a notebook instead of a directory.
+# - You can set this to `/lab` to have JupyterLab start by default, rather than Jupyter Notebook.
+# Default: ''
+# c.Spawner.default_url = ''
+
+## Disable per-user configuration of single-user servers.
+#
+# When starting the user's single-user server, any config file found in the
+# user's $HOME directory will be ignored.
+#
+# Note: a user could circumvent this if the user modifies their Python
+# environment, such as when they have their own conda environments / virtualenvs
+# / containers.
+# Default: False
+# c.Spawner.disable_user_config = False
+
+## List of environment variables for the single-user server to inherit from the
+# JupyterHub process.
+#
+# This list is used to ensure that sensitive information in the JupyterHub
+# process's environment (such as `CONFIGPROXY_AUTH_TOKEN`) is not passed to the
+# single-user server's process.
+# Default: ['JUPYTERHUB_SINGLEUSER_APP']
+# c.Spawner.env_keep = ['JUPYTERHUB_SINGLEUSER_APP']
+
+## Extra environment variables to set for the single-user server's process.
+#
+# Environment variables that end up in the single-user server's process come from 3 sources:
+# - This `environment` configurable
+# - The JupyterHub process' environment variables that are listed in `env_keep`
+# - Variables to establish contact between the single-user notebook and the hub (such as JUPYTERHUB_API_TOKEN)
+#
+# The `environment` configurable should be set by JupyterHub administrators to
+# add installation specific environment variables. It is a dict where the key is
+# the name of the environment variable, and the value can be a string or a
+# callable. If it is a callable, it will be called with one parameter (the
+# spawner instance), and should return a string fairly quickly (no blocking
+# operations please!).
+#
+# Note that the spawner class' interface is not guaranteed to be exactly same
+# across upgrades, so if you are using the callable take care to verify it
+# continues to work after upgrades!
+#
+# .. versionchanged:: 1.2
+# environment from this configuration has highest priority,
+# allowing override of 'default' env variables,
+# such as JUPYTERHUB_API_URL.
+# Default: {}
+# c.Spawner.environment = {}
+
+## Override specific traitlets based on group membership of the user.
+#
+# This can be a dict, or a callable that returns a dict. The keys of the dict
+# are *only* used for lexicographical sorting, to guarantee consistent ordering
+# of the overrides. If it is a callable, it may be async, and will be passed one
+# parameter - the spawner instance. It should return a dictionary.
+#
+# The values of the dict are dicts with the following keys:
+#
+# - `"groups"` - If the user belongs to *any* of these groups, these overrides are
+# applied to their server before spawning.
+# - `"spawner_override"` - a dictionary with overrides to apply to the Spawner
+# settings. Each value can be either the final value to change or a callable that
+# take the `Spawner` instance as parameter and returns the final value.
+# If the traitlet being overriden is a *dictionary*, the dictionary
+# will be *recursively updated*, rather than overriden. If you want to
+# remove a key, set its value to `None`.
+#
+# Example:
+#
+# The following example config will:
+#
+# 1. Add the environment variable "AM_I_GROUP_ALPHA" to everyone in the "group-alpha" group
+# 2. Add the environment variable "AM_I_GROUP_BETA" to everyone in the "group-beta" group.
+# If a user is part of both "group-beta" and "group-alpha", they will get *both* these env
+# vars, due to the dictionary merging functionality.
+# 3. Add a higher memory limit for everyone in the "group-beta" group.
+#
+# ::
+#
+# c.Spawner.group_overrides = {
+# "01-group-alpha-env-add": {
+# "groups": ["group-alpha"],
+# "spawner_override": {"environment": {"AM_I_GROUP_ALPHA": "yes"}},
+# },
+# "02-group-beta-env-add": {
+# "groups": ["group-beta"],
+# "spawner_override": {"environment": {"AM_I_GROUP_BETA": "yes"}},
+# },
+# "03-group-beta-mem-limit": {
+# "groups": ["group-beta"],
+# "spawner_override": {"mem_limit": "2G"}
+# }
+# }
+# Default: traitlets.Undefined
+# c.Spawner.group_overrides = traitlets.Undefined
+
+## Timeout (in seconds) before giving up on a spawned HTTP server
+#
+# Once a server has successfully been spawned, this is the amount of time we
+# wait before assuming that the server is unable to accept connections.
+# Default: 30
+# c.Spawner.http_timeout = 30
+
+## The URL the single-user server should connect to the Hub.
+#
+# If the Hub URL set in your JupyterHub config is not reachable from spawned
+# notebooks, you can set differnt URL by this config.
+#
+# Is None if you don't need to change the URL.
+# Default: None
+# c.Spawner.hub_connect_url = None
+
+## The IP address (or hostname) the single-user server should listen on.
+#
+# Usually either '127.0.0.1' (default) or '0.0.0.0'.
+#
+# The JupyterHub proxy implementation should be able to send packets to this
+# interface.
+#
+# Subclasses which launch remotely or in containers should override the default
+# to '0.0.0.0'.
+#
+# .. versionchanged:: 2.0
+# Default changed to '127.0.0.1', from ''.
+# In most cases, this does not result in a change in behavior,
+# as '' was interpreted as 'unspecified',
+# which used the subprocesses' own default, itself usually '127.0.0.1'.
+# Default: '127.0.0.1'
+# c.Spawner.ip = '127.0.0.1'
+
+## Minimum number of bytes a single-user notebook server is guaranteed to have
+# available.
+#
+# Allows the following suffixes:
+# - K -> Kilobytes
+# - M -> Megabytes
+# - G -> Gigabytes
+# - T -> Terabytes
+#
+# **This is a configuration setting. Your spawner must implement support for the
+# limit to work.** The default spawner, `LocalProcessSpawner`, does **not**
+# implement this support. A custom spawner **must** add support for this setting
+# for it to be enforced.
+# Default: None
+# c.Spawner.mem_guarantee = None
+
+## Maximum number of bytes a single-user notebook server is allowed to use.
+#
+# Allows the following suffixes:
+# - K -> Kilobytes
+# - M -> Megabytes
+# - G -> Gigabytes
+# - T -> Terabytes
+#
+# If the single user server tries to allocate more memory than this, it will
+# fail. There is no guarantee that the single-user notebook server will be able
+# to allocate this much memory - only that it can not allocate more than this.
+#
+# **This is a configuration setting. Your spawner must implement support for the
+# limit to work.** The default spawner, `LocalProcessSpawner`, does **not**
+# implement this support. A custom spawner **must** add support for this setting
+# for it to be enforced.
+# Default: None
+# c.Spawner.mem_limit = None
+
+## Path to the notebook directory for the single-user server.
+#
+# The user sees a file listing of this directory when the notebook interface is
+# started. The current interface does not easily allow browsing beyond the
+# subdirectories in this directory's tree.
+#
+# `~` will be expanded to the home directory of the user, and {username} will be
+# replaced with the name of the user.
+#
+# Note that this does *not* prevent users from accessing files outside of this
+# path! They can do so with many other means.
+# Default: ''
+# c.Spawner.notebook_dir = ''
+
+## Allowed scopes for oauth tokens issued by this server's oauth client.
+#
+# This sets the maximum and default scopes
+# assigned to oauth tokens issued by a single-user server's
+# oauth client (i.e. tokens stored in browsers after authenticating with the server),
+# defining what actions the server can take on behalf of logged-in users.
+#
+# Default is an empty list, meaning minimal permissions to identify users,
+# no actions can be taken on their behalf.
+#
+# If callable, will be called with the Spawner as a single argument.
+# Callables may be async.
+# Default: traitlets.Undefined
+# c.Spawner.oauth_client_allowed_scopes = traitlets.Undefined
+
+## Allowed roles for oauth tokens.
+#
+# Deprecated in 3.0: use oauth_client_allowed_scopes
+#
+# This sets the maximum and default roles
+# assigned to oauth tokens issued by a single-user server's
+# oauth client (i.e. tokens stored in browsers after authenticating with the server),
+# defining what actions the server can take on behalf of logged-in users.
+#
+# Default is an empty list, meaning minimal permissions to identify users,
+# no actions can be taken on their behalf.
+# Default: traitlets.Undefined
+# c.Spawner.oauth_roles = traitlets.Undefined
+
+## An HTML form for options a user can specify on launching their server.
+#
+# The surrounding `<form>` element and the submit button are already provided.
+#
+# For example:
+#
+# .. code:: html
+#
+# Set your key:
+# <input name="key" val="default_key"></input>
+# <br>
+# Choose a letter:
+# <select name="letter" multiple="true">
+# <option value="A">The letter A</option>
+# <option value="B">The letter B</option>
+# </select>
+#
+# The data from this form submission will be passed on to your spawner in
+# `self.user_options`
+#
+# Instead of a form snippet string, this could also be a callable that takes as
+# one parameter the current spawner instance and returns a string. The callable
+# will be called asynchronously if it returns a future, rather than a str. Note
+# that the interface of the spawner class is not deemed stable across versions,
+# so using this functionality might cause your JupyterHub upgrades to break.
+# Default: traitlets.Undefined
+# c.Spawner.options_form = traitlets.Undefined
+
+## Interpret HTTP form data
+#
+# Form data will always arrive as a dict of lists of strings. Override this
+# function to understand single-values, numbers, etc.
+#
+# This should coerce form data into the structure expected by self.user_options,
+# which must be a dict, and should be JSON-serializeable, though it can contain
+# bytes in addition to standard JSON data types.
+#
+# This method should not have any side effects. Any handling of `user_options`
+# should be done in `.start()` to ensure consistent behavior across servers
+# spawned via the API and form submission page.
+#
+# Instances will receive this data on self.user_options, after passing through
+# this function, prior to `Spawner.start`.
+#
+# .. versionchanged:: 1.0
+# user_options are persisted in the JupyterHub database to be reused
+# on subsequent spawns if no options are given.
+# user_options is serialized to JSON as part of this persistence
+# (with additional support for bytes in case of uploaded file data),
+# and any non-bytes non-jsonable values will be replaced with None
+# if the user_options are re-used.
+# Default: traitlets.Undefined
+# c.Spawner.options_from_form = traitlets.Undefined
+
+## Interval (in seconds) on which to poll the spawner for single-user server's
+# status.
+#
+# At every poll interval, each spawner's `.poll` method is called, which checks
+# if the single-user server is still running. If it isn't running, then
+# JupyterHub modifies its own state accordingly and removes appropriate routes
+# from the configurable proxy.
+# Default: 30
+# c.Spawner.poll_interval = 30
+
+## Jitter fraction for poll_interval.
+#
+# Avoids alignment of poll calls for many Spawners, e.g. when restarting
+# JupyterHub, which restarts all polls for running Spawners.
+#
+# `poll_jitter=0` means no jitter, 0.1 means 10%, etc.
+# Default: 0.1
+# c.Spawner.poll_jitter = 0.1
+
+## The port for single-user servers to listen on.
+#
+# Defaults to `0`, which uses a randomly allocated port number each time.
+#
+# If set to a non-zero value, all Spawners will use the same port, which only
+# makes sense if each server is on a different address, e.g. in containers.
+#
+# New in version 0.7.
+# Default: 0
+# c.Spawner.port = 0
+
+## An optional hook function that you can implement to do work after the spawner
+# stops.
+#
+# This can be set independent of any concrete spawner implementation.
+# Default: None
+# c.Spawner.post_stop_hook = None
+
+## An optional hook function that you can implement to do some bootstrapping work
+# before the spawner starts. For example, create a directory for your user or
+# load initial content.
+#
+# This can be set independent of any concrete spawner implementation.
+#
+# This maybe a coroutine.
+#
+# Example::
+#
+# def my_hook(spawner):
+# username = spawner.user.name
+# spawner.environment["GREETING"] = f"Hello {username}"
+#
+# c.Spawner.pre_spawn_hook = my_hook
+# Default: None
+# c.Spawner.pre_spawn_hook = None
+
+## An optional hook function that you can implement to modify the ready event,
+# which will be shown to the user on the spawn progress page when their server
+# is ready.
+#
+# This can be set independent of any concrete spawner implementation.
+#
+# This maybe a coroutine.
+#
+# Example::
+#
+# async def my_ready_hook(spawner, ready_event):
+# ready_event["html_message"] = f"Server {spawner.name} is ready for {spawner.user.name}"
+# return ready_event
+#
+# c.Spawner.progress_ready_hook = my_ready_hook
+# Default: None
+# c.Spawner.progress_ready_hook = None
+
+## The list of scopes to request for $JUPYTERHUB_API_TOKEN
+#
+# If not specified, the scopes in the `server` role will be used
+# (unchanged from pre-4.0).
+#
+# If callable, will be called with the Spawner instance as its sole argument
+# (JupyterHub user available as spawner.user).
+#
+# JUPYTERHUB_API_TOKEN will be assigned the _subset_ of these scopes
+# that are held by the user (as in oauth_client_allowed_scopes).
+#
+# .. versionadded:: 4.0
+# Default: traitlets.Undefined
+# c.Spawner.server_token_scopes = traitlets.Undefined
+
+## List of SSL alt names
+#
+# May be set in config if all spawners should have the same value(s),
+# or set at runtime by Spawner that know their names.
+# Default: []
+# c.Spawner.ssl_alt_names = []
+
+## Whether to include `DNS:localhost`, `IP:127.0.0.1` in alt names
+# Default: True
+# c.Spawner.ssl_alt_names_include_local = True
+
+## Timeout (in seconds) before giving up on starting of single-user server.
+#
+# This is the timeout for start to return, not the timeout for the server to
+# respond. Callers of spawner.start will assume that startup has failed if it
+# takes longer than this. start should return when the server process is started
+# and its location is known.
+# Default: 60
+# c.Spawner.start_timeout = 60
+
+#------------------------------------------------------------------------------
+# LocalProcessSpawner(Spawner) configuration
+#------------------------------------------------------------------------------
+## A Spawner that uses `subprocess.Popen` to start single-user servers as local
+# processes.
+#
+# Requires local UNIX users matching the authenticated users to exist. Does not
+# work on Windows.
+#
+# This is the default spawner for JupyterHub.
+#
+# Note: This spawner does not implement CPU / memory guarantees and limits.
+
+##
+# See also: Spawner.args
+# c.LocalProcessSpawner.args = []
+
+##
+# See also: Spawner.auth_state_hook
+# c.LocalProcessSpawner.auth_state_hook = None
+
+##
+# See also: Spawner.cmd
+# c.LocalProcessSpawner.cmd = ['jupyterhub-singleuser']
+
+##
+# See also: Spawner.consecutive_failure_limit
+# c.LocalProcessSpawner.consecutive_failure_limit = 0
+
+##
+# See also: Spawner.cpu_guarantee
+# c.LocalProcessSpawner.cpu_guarantee = None
+
+##
+# See also: Spawner.cpu_limit
+# c.LocalProcessSpawner.cpu_limit = None
+
+## Enable debug-logging of the single-user server
+# See also: Spawner.debug
+# c.LocalProcessSpawner.debug = False
+
+##
+# See also: Spawner.default_url
+# c.LocalProcessSpawner.default_url = ''
+
+##
+# See also: Spawner.disable_user_config
+# c.LocalProcessSpawner.disable_user_config = False
+
+##
+# See also: Spawner.env_keep
+# c.LocalProcessSpawner.env_keep = ['JUPYTERHUB_SINGLEUSER_APP']
+
+##
+# See also: Spawner.environment
+# c.LocalProcessSpawner.environment = {}
+
+##
+# See also: Spawner.group_overrides
+# c.LocalProcessSpawner.group_overrides = traitlets.Undefined
+
+##
+# See also: Spawner.http_timeout
+# c.LocalProcessSpawner.http_timeout = 30
+
+##
+# See also: Spawner.hub_connect_url
+# c.LocalProcessSpawner.hub_connect_url = None
+
+## Seconds to wait for single-user server process to halt after SIGINT.
+#
+# If the process has not exited cleanly after this many seconds, a SIGTERM is
+# sent.
+# Default: 10
+# c.LocalProcessSpawner.interrupt_timeout = 10
+
+##
+# See also: Spawner.ip
+# c.LocalProcessSpawner.ip = '127.0.0.1'
+
+## Seconds to wait for process to halt after SIGKILL before giving up.
+#
+# If the process does not exit cleanly after this many seconds of SIGKILL, it
+# becomes a zombie process. The hub process will log a warning and then give up.
+# Default: 5
+# c.LocalProcessSpawner.kill_timeout = 5
+
+##
+# See also: Spawner.mem_guarantee
+# c.LocalProcessSpawner.mem_guarantee = None
+
+##
+# See also: Spawner.mem_limit
+# c.LocalProcessSpawner.mem_limit = None
+
+##
+# See also: Spawner.notebook_dir
+# c.LocalProcessSpawner.notebook_dir = ''
+
+## Allowed scopes for oauth tokens issued by this server's oauth client.
+# See also: Spawner.oauth_client_allowed_scopes
+# c.LocalProcessSpawner.oauth_client_allowed_scopes = traitlets.Undefined
+
+## Allowed roles for oauth tokens.
+# See also: Spawner.oauth_roles
+# c.LocalProcessSpawner.oauth_roles = traitlets.Undefined
+
+##
+# See also: Spawner.options_form
+# c.LocalProcessSpawner.options_form = traitlets.Undefined
+
+##
+# See also: Spawner.options_from_form
+# c.LocalProcessSpawner.options_from_form = traitlets.Undefined
+
+##
+# See also: Spawner.poll_interval
+# c.LocalProcessSpawner.poll_interval = 30
+
+##
+# See also: Spawner.poll_jitter
+# c.LocalProcessSpawner.poll_jitter = 0.1
+
+## Extra keyword arguments to pass to Popen
+#
+# when spawning single-user servers.
+#
+# For example::
+#
+# popen_kwargs = dict(shell=True)
+# Default: {}
+# c.LocalProcessSpawner.popen_kwargs = {}
+
+##
+# See also: Spawner.port
+# c.LocalProcessSpawner.port = 0
+
+##
+# See also: Spawner.post_stop_hook
+# c.LocalProcessSpawner.post_stop_hook = None
+
+##
+# See also: Spawner.pre_spawn_hook
+# c.LocalProcessSpawner.pre_spawn_hook = None
+
+##
+# See also: Spawner.progress_ready_hook
+# c.LocalProcessSpawner.progress_ready_hook = None
+
+## The list of scopes to request for $JUPYTERHUB_API_TOKEN
+# See also: Spawner.server_token_scopes
+# c.LocalProcessSpawner.server_token_scopes = traitlets.Undefined
+
+## Specify a shell command to launch.
+#
+# The single-user command will be appended to this list,
+# so it sould end with `-c` (for bash) or equivalent.
+#
+# For example::
+#
+# c.LocalProcessSpawner.shell_cmd = ['bash', '-l', '-c']
+#
+# to launch with a bash login shell, which would set up the user's own
+# complete environment.
+#
+# .. warning::
+#
+# Using shell_cmd gives users control over PATH, etc.,
+# which could change what the jupyterhub-singleuser launch command does.
+# Only use this for trusted users.
+# Default: []
+# c.LocalProcessSpawner.shell_cmd = []
+
+## List of SSL alt names
+# See also: Spawner.ssl_alt_names
+# c.LocalProcessSpawner.ssl_alt_names = []
+
+## Whether to include `DNS:localhost`, `IP:127.0.0.1` in alt names
+# See also: Spawner.ssl_alt_names_include_local
+# c.LocalProcessSpawner.ssl_alt_names_include_local = True
+
+##
+# See also: Spawner.start_timeout
+# c.LocalProcessSpawner.start_timeout = 60
+
+## Seconds to wait for single-user server process to halt after SIGTERM.
+#
+# If the process does not exit cleanly after this many seconds of SIGTERM, a
+# SIGKILL is sent.
+# Default: 5
+# c.LocalProcessSpawner.term_timeout = 5
+
+#------------------------------------------------------------------------------
+# LocalAuthenticator(Authenticator) configuration
+#------------------------------------------------------------------------------
+## Base class for Authenticators that work with local Linux/UNIX users
+#
+# Checks for local users, and can attempt to create them if they exist.
+
+## The command to use for creating users as a list of strings
+#
+# For each element in the list, the string USERNAME will be replaced with the
+# user's username. The username will also be appended as the final argument.
+#
+# For Linux, the default value is:
+#
+# ['adduser', '-q', '--gecos', '""', '--disabled-password']
+#
+# To specify a custom home directory, set this to:
+#
+# ['adduser', '-q', '--gecos', '""', '--home', '/customhome/USERNAME', '--
+# disabled-password']
+#
+# This will run the command:
+#
+# adduser -q --gecos "" --home /customhome/river --disabled-password river
+#
+# when the user 'river' is created.
+# Default: []
+# c.LocalAuthenticator.add_user_cmd = []
+
+##
+# See also: Authenticator.admin_users
+# c.LocalAuthenticator.admin_users = set()
+
+##
+# See also: Authenticator.allow_all
+# c.LocalAuthenticator.allow_all = False
+
+##
+# See also: Authenticator.allow_existing_users
+# c.LocalAuthenticator.allow_existing_users = False
+
+## Allow login from all users in these UNIX groups.
+#
+# .. versionchanged:: 5.0
+# `allowed_groups` may be specified together with allowed_users,
+# to grant access by group OR name.
+# Default: set()
+# c.LocalAuthenticator.allowed_groups = set()
+
+##
+# See also: Authenticator.allowed_users
+# c.LocalAuthenticator.allowed_users = set()
+
+## Is there any allow config?
+# See also: Authenticator.any_allow_config
+# c.LocalAuthenticator.any_allow_config = False
+
+## The max age (in seconds) of authentication info
+# See also: Authenticator.auth_refresh_age
+# c.LocalAuthenticator.auth_refresh_age = 300
+
+## Automatically begin the login process
+# See also: Authenticator.auto_login
+# c.LocalAuthenticator.auto_login = False
+
+##
+# See also: Authenticator.auto_login_oauth2_authorize
+# c.LocalAuthenticator.auto_login_oauth2_authorize = False
+
+##
+# See also: Authenticator.blocked_users
+# c.LocalAuthenticator.blocked_users = set()
+
+## If set to True, will attempt to create local system users if they do not exist
+# already.
+#
+# Supports Linux and BSD variants only.
+# Default: False
+# c.LocalAuthenticator.create_system_users = False
+
+## Delete any users from the database that do not pass validation
+# See also: Authenticator.delete_invalid_users
+# c.LocalAuthenticator.delete_invalid_users = False
+
+## Enable persisting auth_state (if available).
+# See also: Authenticator.enable_auth_state
+# c.LocalAuthenticator.enable_auth_state = False
+
+## DEPRECATED: use allowed_groups
+# Default: set()
+# c.LocalAuthenticator.group_whitelist = set()
+
+## Let authenticator manage user groups
+# See also: Authenticator.manage_groups
+# c.LocalAuthenticator.manage_groups = False
+
+## Let authenticator manage roles
+# See also: Authenticator.manage_roles
+# c.LocalAuthenticator.manage_roles = False
+
+##
+# See also: Authenticator.otp_prompt
+# c.LocalAuthenticator.otp_prompt = 'OTP:'
+
+##
+# See also: Authenticator.post_auth_hook
+# c.LocalAuthenticator.post_auth_hook = None
+
+## Force refresh of auth prior to spawn.
+# See also: Authenticator.refresh_pre_spawn
+# c.LocalAuthenticator.refresh_pre_spawn = False
+
+##
+# See also: Authenticator.request_otp
+# c.LocalAuthenticator.request_otp = False
+
+## Reset managed roles to result of `load_managed_roles()` on startup.
+# See also: Authenticator.reset_managed_roles_on_startup
+# c.LocalAuthenticator.reset_managed_roles_on_startup = False
+
+## Dictionary of uids to use at user creation time. This helps ensure that users
+# created from the database get the same uid each time they are created in
+# temporary deployments or containers.
+# Default: {}
+# c.LocalAuthenticator.uids = {}
+
+## Dictionary mapping authenticator usernames to JupyterHub users.
+# See also: Authenticator.username_map
+# c.LocalAuthenticator.username_map = {}
+
+##
+# See also: Authenticator.username_pattern
+# c.LocalAuthenticator.username_pattern = ''
+
+## Deprecated, use `Authenticator.allowed_users`
+# See also: Authenticator.whitelist
+# c.LocalAuthenticator.whitelist = set()
+
+#------------------------------------------------------------------------------
+# PAMAuthenticator(LocalAuthenticator) configuration
+#------------------------------------------------------------------------------
+## Authenticate local UNIX users with PAM
+
+##
+# See also: LocalAuthenticator.add_user_cmd
+# c.PAMAuthenticator.add_user_cmd = []
+
+## Authoritative list of user groups that determine admin access. Users not in
+# these groups can still be granted admin status through admin_users.
+#
+# allowed/blocked rules still apply.
+#
+# Note: As of JupyterHub 2.0, full admin rights should not be required, and more
+# precise permissions can be managed via roles.
+# Default: set()
+# c.PAMAuthenticator.admin_groups = set()
+
+##
+# See also: Authenticator.admin_users
+# c.PAMAuthenticator.admin_users = set()
+
+##
+# See also: Authenticator.allow_all
+# c.PAMAuthenticator.allow_all = False
+
+##
+# See also: Authenticator.allow_existing_users
+# c.PAMAuthenticator.allow_existing_users = False
+
+##
+# See also: LocalAuthenticator.allowed_groups
+# c.PAMAuthenticator.allowed_groups = set()
+
+##
+# See also: Authenticator.allowed_users
+# c.PAMAuthenticator.allowed_users = set()
+
+## Is there any allow config?
+# See also: Authenticator.any_allow_config
+# c.PAMAuthenticator.any_allow_config = False
+
+## The max age (in seconds) of authentication info
+# See also: Authenticator.auth_refresh_age
+# c.PAMAuthenticator.auth_refresh_age = 300
+
+## Automatically begin the login process
+# See also: Authenticator.auto_login
+# c.PAMAuthenticator.auto_login = False
+
+##
+# See also: Authenticator.auto_login_oauth2_authorize
+# c.PAMAuthenticator.auto_login_oauth2_authorize = False
+
+##
+# See also: Authenticator.blocked_users
+# c.PAMAuthenticator.blocked_users = set()
+
+## Whether to check the user's account status via PAM during authentication.
+#
+# The PAM account stack performs non-authentication based account management. It
+# is typically used to restrict/permit access to a service and this step is
+# needed to access the host's user access control.
+#
+# Disabling this can be dangerous as authenticated but unauthorized users may be
+# granted access and, therefore, arbitrary execution on the system.
+# Default: True
+# c.PAMAuthenticator.check_account = True
+
+##
+# See also: LocalAuthenticator.create_system_users
+# c.PAMAuthenticator.create_system_users = False
+
+## Delete any users from the database that do not pass validation
+# See also: Authenticator.delete_invalid_users
+# c.PAMAuthenticator.delete_invalid_users = False
+
+## Enable persisting auth_state (if available).
+# See also: Authenticator.enable_auth_state
+# c.PAMAuthenticator.enable_auth_state = False
+
+## The text encoding to use when communicating with PAM
+# Default: 'utf8'
+# c.PAMAuthenticator.encoding = 'utf8'
+
+## Number of executor threads.
+#
+# PAM auth requests happen in this thread, so it is mostly waiting for the pam
+# stack. One thread is usually enough, unless your pam stack is doing something
+# slow like network requests
+# Default: 4
+# c.PAMAuthenticator.executor_threads = 4
+
+## DEPRECATED: use allowed_groups
+# See also: LocalAuthenticator.group_whitelist
+# c.PAMAuthenticator.group_whitelist = set()
+
+## Let authenticator manage user groups
+# See also: Authenticator.manage_groups
+# c.PAMAuthenticator.manage_groups = False
+
+## Let authenticator manage roles
+# See also: Authenticator.manage_roles
+# c.PAMAuthenticator.manage_roles = False
+
+## Whether to open a new PAM session when spawners are started.
+#
+# This may trigger things like mounting shared filesystems, loading credentials,
+# etc. depending on system configuration.
+#
+# The lifecycle of PAM sessions is not correct, so many PAM session
+# configurations will not work.
+#
+# If any errors are encountered when opening/closing PAM sessions, this is
+# automatically set to False.
+#
+# .. versionchanged:: 2.2
+#
+# Due to longstanding problems in the session lifecycle,
+# this is now disabled by default.
+# You may opt-in to opening sessions by setting this to True.
+# Default: False
+# c.PAMAuthenticator.open_sessions = False
+
+##
+# See also: Authenticator.otp_prompt
+# c.PAMAuthenticator.otp_prompt = 'OTP:'
+
+## Round-trip the username via PAM lookups to make sure it is unique
+#
+# PAM can accept multiple usernames that map to the same user, for example
+# DOMAIN\username in some cases. To prevent this, convert username into uid,
+# then back to uid to normalize.
+# Default: False
+# c.PAMAuthenticator.pam_normalize_username = False
+
+##
+# See also: Authenticator.post_auth_hook
+# c.PAMAuthenticator.post_auth_hook = None
+
+## Force refresh of auth prior to spawn.
+# See also: Authenticator.refresh_pre_spawn
+# c.PAMAuthenticator.refresh_pre_spawn = False
+
+##
+# See also: Authenticator.request_otp
+# c.PAMAuthenticator.request_otp = False
+
+## Reset managed roles to result of `load_managed_roles()` on startup.
+# See also: Authenticator.reset_managed_roles_on_startup
+# c.PAMAuthenticator.reset_managed_roles_on_startup = False
+
+## The name of the PAM service to use for authentication
+# Default: 'login'
+# c.PAMAuthenticator.service = 'login'
+
+##
+# See also: LocalAuthenticator.uids
+# c.PAMAuthenticator.uids = {}
+
+## Dictionary mapping authenticator usernames to JupyterHub users.
+# See also: Authenticator.username_map
+# c.PAMAuthenticator.username_map = {}
+
+##
+# See also: Authenticator.username_pattern
+# c.PAMAuthenticator.username_pattern = ''
+
+## Deprecated, use `Authenticator.allowed_users`
+# See also: Authenticator.whitelist
+# c.PAMAuthenticator.whitelist = set()
+
+#------------------------------------------------------------------------------
+# SimpleLocalProcessSpawner(LocalProcessSpawner) configuration
+#------------------------------------------------------------------------------
+## A version of LocalProcessSpawner that doesn't require users to exist on the
+# system beforehand.
+#
+# Only use this for testing.
+#
+# Note: DO NOT USE THIS FOR PRODUCTION USE CASES! It is very insecure, and
+# provides absolutely no isolation between different users!
+
+##
+# See also: Spawner.args
+# c.SimpleLocalProcessSpawner.args = []
+
+##
+# See also: Spawner.auth_state_hook
+# c.SimpleLocalProcessSpawner.auth_state_hook = None
+
+##
+# See also: Spawner.cmd
+# c.SimpleLocalProcessSpawner.cmd = ['jupyterhub-singleuser']
+
+##
+# See also: Spawner.consecutive_failure_limit
+# c.SimpleLocalProcessSpawner.consecutive_failure_limit = 0
+
+##
+# See also: Spawner.cpu_guarantee
+# c.SimpleLocalProcessSpawner.cpu_guarantee = None
+
+##
+# See also: Spawner.cpu_limit
+# c.SimpleLocalProcessSpawner.cpu_limit = None
+
+## Enable debug-logging of the single-user server
+# See also: Spawner.debug
+# c.SimpleLocalProcessSpawner.debug = False
+
+##
+# See also: Spawner.default_url
+# c.SimpleLocalProcessSpawner.default_url = ''
+
+##
+# See also: Spawner.disable_user_config
+# c.SimpleLocalProcessSpawner.disable_user_config = False
+
+##
+# See also: Spawner.env_keep
+# c.SimpleLocalProcessSpawner.env_keep = ['JUPYTERHUB_SINGLEUSER_APP']
+
+##
+# See also: Spawner.environment
+# c.SimpleLocalProcessSpawner.environment = {}
+
+##
+# See also: Spawner.group_overrides
+# c.SimpleLocalProcessSpawner.group_overrides = traitlets.Undefined
+
+## Template to expand to set the user home. {username} is expanded to the
+# jupyterhub username.
+# Default: '/tmp/{username}'
+# c.SimpleLocalProcessSpawner.home_dir_template = '/tmp/{username}'
+
+##
+# See also: Spawner.http_timeout
+# c.SimpleLocalProcessSpawner.http_timeout = 30
+
+##
+# See also: Spawner.hub_connect_url
+# c.SimpleLocalProcessSpawner.hub_connect_url = None
+
+##
+# See also: LocalProcessSpawner.interrupt_timeout
+# c.SimpleLocalProcessSpawner.interrupt_timeout = 10
+
+##
+# See also: Spawner.ip
+# c.SimpleLocalProcessSpawner.ip = '127.0.0.1'
+
+##
+# See also: LocalProcessSpawner.kill_timeout
+# c.SimpleLocalProcessSpawner.kill_timeout = 5
+
+##
+# See also: Spawner.mem_guarantee
+# c.SimpleLocalProcessSpawner.mem_guarantee = None
+
+##
+# See also: Spawner.mem_limit
+# c.SimpleLocalProcessSpawner.mem_limit = None
+
+##
+# See also: Spawner.notebook_dir
+# c.SimpleLocalProcessSpawner.notebook_dir = ''
+
+## Allowed scopes for oauth tokens issued by this server's oauth client.
+# See also: Spawner.oauth_client_allowed_scopes
+# c.SimpleLocalProcessSpawner.oauth_client_allowed_scopes = traitlets.Undefined
+
+## Allowed roles for oauth tokens.
+# See also: Spawner.oauth_roles
+# c.SimpleLocalProcessSpawner.oauth_roles = traitlets.Undefined
+
+##
+# See also: Spawner.options_form
+# c.SimpleLocalProcessSpawner.options_form = traitlets.Undefined
+
+##
+# See also: Spawner.options_from_form
+# c.SimpleLocalProcessSpawner.options_from_form = traitlets.Undefined
+
+##
+# See also: Spawner.poll_interval
+# c.SimpleLocalProcessSpawner.poll_interval = 30
+
+##
+# See also: Spawner.poll_jitter
+# c.SimpleLocalProcessSpawner.poll_jitter = 0.1
+
+## Extra keyword arguments to pass to Popen
+# See also: LocalProcessSpawner.popen_kwargs
+# c.SimpleLocalProcessSpawner.popen_kwargs = {}
+
+##
+# See also: Spawner.port
+# c.SimpleLocalProcessSpawner.port = 0
+
+##
+# See also: Spawner.post_stop_hook
+# c.SimpleLocalProcessSpawner.post_stop_hook = None
+
+##
+# See also: Spawner.pre_spawn_hook
+# c.SimpleLocalProcessSpawner.pre_spawn_hook = None
+
+##
+# See also: Spawner.progress_ready_hook
+# c.SimpleLocalProcessSpawner.progress_ready_hook = None
+
+## The list of scopes to request for $JUPYTERHUB_API_TOKEN
+# See also: Spawner.server_token_scopes
+# c.SimpleLocalProcessSpawner.server_token_scopes = traitlets.Undefined
+
+## Specify a shell command to launch.
+# See also: LocalProcessSpawner.shell_cmd
+# c.SimpleLocalProcessSpawner.shell_cmd = []
+
+## List of SSL alt names
+# See also: Spawner.ssl_alt_names
+# c.SimpleLocalProcessSpawner.ssl_alt_names = []
+
+## Whether to include `DNS:localhost`, `IP:127.0.0.1` in alt names
+# See also: Spawner.ssl_alt_names_include_local
+# c.SimpleLocalProcessSpawner.ssl_alt_names_include_local = True
+
+##
+# See also: Spawner.start_timeout
+# c.SimpleLocalProcessSpawner.start_timeout = 60
+
+##
+# See also: LocalProcessSpawner.term_timeout
+# c.SimpleLocalProcessSpawner.term_timeout = 5
--
GitLab