## 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 = 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
## 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
![[PukiWiki]](image/pukiwiki.png "[PukiWiki]")
