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Merge pull request #4091 from Goodiec/patch-1

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Update config-user-env.md
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@@ -7,8 +7,8 @@ environment in some way.
Since the `jupyterhub-singleuser` server extends the standard Jupyter notebook Since the `jupyterhub-singleuser` server extends the standard Jupyter notebook
server, most configuration and documentation that applies to Jupyter Notebook server, most configuration and documentation that applies to Jupyter Notebook
applies to the single-user environments. Configuration of user environments applies to the single-user environments. Configuration of user environments
typically does not occur through JupyterHub itself, but rather through system- typically does not occur through JupyterHub itself, but rather through the system-wide
wide configuration of Jupyter, which is inherited by `jupyterhub-singleuser`. configuration of Jupyter, which is inherited by `jupyterhub-singleuser`.
**Tip:** When searching for configuration tips for JupyterHub user **Tip:** When searching for configuration tips for JupyterHub user
environments, try removing JupyterHub from your search because there are a lot environments, try removing JupyterHub from your search because there are a lot
@@ -17,10 +17,10 @@ configuration is the same.
This section will focus on user environments, including: This section will focus on user environments, including:
- Installing packages - [Installing packages](#installing-packages)
- Configuring Jupyter and IPython - [Configuring Jupyter and IPython](#configuring-jupyter-and-ipython)
- Installing kernelspecs - [Installing kernelspecs](#installing-kernelspecs)
- Using containers vs. multi-user hosts - [Using containers vs. multi-user hosts](#multi-user-hosts-vs-containers)
## Installing packages ## Installing packages
@@ -30,7 +30,7 @@ system-wide or in a shared environment.
This installation location should always be in the same environment that This installation location should always be in the same environment that
`jupyterhub-singleuser` itself is installed in, and must be _readable and `jupyterhub-singleuser` itself is installed in, and must be _readable and
executable_ by your users. If you want users to be able to install additional executable_ by your users. If you want users to be able to install additional
packages, it must also be _writable_ by your users. packages, the installation location must also be _writable_ by your users.
If you are using a standard system Python install, you would use: If you are using a standard system Python install, you would use:
@@ -109,7 +109,7 @@ they are available to all of your users. This means installing kernelspecs
either system-wide (e.g. in /usr/local/) or in the `sys.prefix` of JupyterHub either system-wide (e.g. in /usr/local/) or in the `sys.prefix` of JupyterHub
itself. itself.
Jupyter kernelspec installation is system wide by default, but some kernels Jupyter kernelspec installation is system-wide by default, but some kernels
may default to installing kernelspecs in your home directory. These will need may default to installing kernelspecs in your home directory. These will need
to be moved system-wide to ensure that they are accessible. to be moved system-wide to ensure that they are accessible.
@@ -143,12 +143,12 @@ depending on what Spawner you are using.
The first category is a **shared system (multi-user host)** where The first category is a **shared system (multi-user host)** where
each user has a JupyterHub account and a home directory as well as being each user has a JupyterHub account and a home directory as well as being
a real system user. In this example, shared configuration and installation a real system user. In this example, shared configuration and installation
must be in a 'system-wide' location, such as `/etc/` or `/usr/local` must be in a 'system-wide' location, such as `/etc/`, or `/usr/local`
or a custom prefix such as `/opt/conda`. or a custom prefix such as `/opt/conda`.
When JupyterHub uses **container-based** Spawners (e.g. KubeSpawner or When JupyterHub uses **container-based** Spawners (e.g. KubeSpawner or
DockerSpawner), the 'system-wide' environment is really the container image DockerSpawner), the 'system-wide' environment is really the container image
which you are using for users. that you are using for users.
In both cases, you want to _avoid putting configuration in user home In both cases, you want to _avoid putting configuration in user home
directories_ because users can change those configuration settings. Also, directories_ because users can change those configuration settings. Also,
@@ -157,7 +157,7 @@ difficult for admins to update later.
## Named servers ## Named servers
By default, in a JupyterHub deployment each user has exactly one server. By default, in a JupyterHub deployment, each user has exactly one server.
JupyterHub can, however, have multiple servers per user. JupyterHub can, however, have multiple servers per user.
This is most useful in deployments where users can configure the environment This is most useful in deployments where users can configure the environment
@@ -181,7 +181,7 @@ as well as the admin page:
![named servers on the admin page](../images/named-servers-admin.png) ![named servers on the admin page](../images/named-servers-admin.png)
Named servers can be accessed, created, started, stopped, and deleted Named servers can be accessed, created, started, stopped, and deleted
from these pages. Activity tracking is now per-server as well. from these pages. Activity tracking is now per server as well.
The number of named servers per user can be limited by setting a constant value: The number of named servers per user can be limited by setting a constant value:
@@ -207,9 +207,9 @@ If `named_server_limit_per_user` is set to `0`, no limit is enforced.
(classic-notebook-ui)= (classic-notebook-ui)=
## Switching back to classic notebook ## Switching back to the classic notebook
By default the single-user server launches JupyterLab, By default, the single-user server launches JupyterLab,
which is based on [Jupyter Server][]. which is based on [Jupyter Server][].
This is the default server when running JupyterHub ≥ 2.0. This is the default server when running JupyterHub ≥ 2.0.
You can switch to using the legacy Jupyter Notebook server by setting the `JUPYTERHUB_SINGLEUSER_APP` environment variable You can switch to using the legacy Jupyter Notebook server by setting the `JUPYTERHUB_SINGLEUSER_APP` environment variable
@@ -223,11 +223,11 @@ export JUPYTERHUB_SINGLEUSER_APP='notebook.notebookapp.NotebookApp'
[jupyter notebook]: https://jupyter-notebook.readthedocs.io [jupyter notebook]: https://jupyter-notebook.readthedocs.io
:::{versionchanged} 2.0 :::{versionchanged} 2.0
JupyterLab is now the default singleuser UI, if available, JupyterLab is now the default single-user UI, if available,
which is based on the [Jupyter Server][], which is based on the [Jupyter Server][],
no longer the legacy [Jupyter Notebook][] server. no longer the legacy [Jupyter Notebook][] server.
JupyterHub prior to 2.0 launched the legacy notebook server (`jupyter notebook`), JupyterHub prior to 2.0 launched the legacy notebook server (`jupyter notebook`),
and Jupyter server could be selected by specifying and the Jupyter server could be selected by specifying
```python ```python
# jupyterhub_config.py # jupyterhub_config.py