From 6a2283bef83b1529992528809209e5b8b58d398d Mon Sep 17 00:00:00 2001
From: George Hunt <georgejhunt@gmail.com>
Date: Wed, 10 Mar 2021 03:10:49 +0000
Subject: [PATCH] systemd spawner is working writing to /var/lib/private

---
 roles/jupyter/tasks/install.yml              | 17 +++++++++++++++--
 roles/jupyter/templates/jupyter.service      |  2 +-
 roles/jupyter/templates/jupyterhub_config.py | 13 ++++++++++---
 3 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/roles/jupyter/tasks/install.yml b/roles/jupyter/tasks/install.yml
index 0c2526856..353f78cae 100644
--- a/roles/jupyter/tasks/install.yml
+++ b/roles/jupyter/tasks/install.yml
@@ -1,4 +1,9 @@
-- name: Make the directories to hold notebooks
+- name: We need a non-privileged user to write all the notebooks
+  ansible.builtin.user:
+      name: web-user
+      home: /opt/iiab/notebooks
+
+- name: Make the directories to hold jupyter config
   file:
     state: directory
     path: '{{ item }}'
@@ -7,6 +12,12 @@
      - '{{ jupyter_venv }}/etc/jupyterhub'
      - '{{ jupyter_venv }}/etc/systemd'
 
+- name: Make a directory to hold notebooks
+  file:
+    state: directory
+    path: /opt/iiab/notebooks
+    owner: web-user
+
 - name: "Set 'nodejs_install: True' and 'nodejs_enabled: True'"
   set_fact:
     nodejs_install: True
@@ -35,6 +46,8 @@
        - ipywidgets
        - jupyterhub
        - jupyterlab
+       - jupyterhub_firstuseauthenticator
+       - jupyterhub-systemdspawner
     virtualenv: "{{ jupyter_venv }}"    # /opt/iiab/jupyter
     virtualenv_site_packages: no
     virtualenv_command: /usr/bin/virtualenv
@@ -45,7 +58,7 @@
 - name: Install the config file for jupyterhub
   template:
       src: jupyterhub_config.py
-      dest: '{{ jupyter_venv }}/env/jupyterhub/'
+      dest: '{{ jupyter_venv }}/etc/jupyterhub/'
 - name: Use systemd to start jupyterhub
   template:
       src: jupyter.service
diff --git a/roles/jupyter/templates/jupyter.service b/roles/jupyter/templates/jupyter.service
index 363390a9f..f9e5aa798 100644
--- a/roles/jupyter/templates/jupyter.service
+++ b/roles/jupyter/templates/jupyter.service
@@ -3,7 +3,7 @@ Description=JupyterHub
 After=syslog.target network.target
 
 [Service]
-User=hubuser
+User=root
 Environment="PATH=/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:{{ jupyter_venv }}/bin"
 ExecStart={{ jupyter_venv }}/bin/jupyterhub -f {{ jupyter_venv }}/etc/jupyterhub/jupyterhub_config.py
 
diff --git a/roles/jupyter/templates/jupyterhub_config.py b/roles/jupyter/templates/jupyterhub_config.py
index 00c70a126..71d81dbb9 100644
--- a/roles/jupyter/templates/jupyterhub_config.py
+++ b/roles/jupyter/templates/jupyterhub_config.py
@@ -114,7 +114,7 @@
 #    - dummy: jupyterhub.auth.DummyAuthenticator
 #    - pam: jupyterhub.auth.PAMAuthenticator
 #  Default: 'jupyterhub.auth.PAMAuthenticator'
-# c.JupyterHub.authenticator_class = 'jupyterhub.auth.PAMAuthenticator'
+c.JupyterHub.authenticator_class = 'firstuseauthenticator.FirstUseAuthenticator'
 
 ## The base URL of the entire application.
 #  
@@ -194,7 +194,7 @@
 #  
 #  Should be exactly 256 bits (32 bytes).
 #  Default: b''
-# c.JupyterHub.cookie_secret = b''
+c.JupyterHub.cookie_secret = b'helloiiabitsrainingb123456789012'
 
 ## File in which to store the cookie secret.
 #  Default: 'jupyterhub_cookie_secret'
@@ -589,7 +589,7 @@
 #    - localprocess: jupyterhub.spawner.LocalProcessSpawner
 #    - simple: jupyterhub.spawner.SimpleLocalProcessSpawner
 #  Default: 'jupyterhub.spawner.LocalProcessSpawner'
-# c.JupyterHub.spawner_class = 'jupyterhub.spawner.LocalProcessSpawner'
+c.JupyterHub.spawner_class = 'systemdspawner.SystemdSpawner'
 
 ## Path to SSL certificate file for the public facing interface of the proxy
 #  
@@ -1229,3 +1229,10 @@
 ## Maximum number of entries per page for paginated results.
 #  Default: 250
 # c.Pagination.max_per_page = 250
+
+#------------------------------------------------------------------------------
+#  Systemdspawner config
+#------------------------------------------------------------------------------
+c.SystemdSpawner.dynamic_users = True
+c.SystemdSpawner.user_workingdir = '/opt/iiab/notebooks/{USERNAME}'
+