I works with 15 pupils on my jupyterhub server today. It didn’t work stable. I didn’t react on ctrl-enter in code cells and it said “kernel not connected”.
Here some lines of the logs:
Sep 17 14:27:11 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:11.985 JupyterHub log:174] 302 GET /hub/spawn -> /hub/spawn-pending/j2salome (j2salome@134.103.220.84) 1026.72ms
Sep 17 14:27:12 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:12.031 JupyterHub pages:347] j2salome is pending spawn
Sep 17 14:27:12 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:12.050 JupyterHub log:174] 200 GET /hub/spawn-pending/j2salome (j2salome@134.103.220.84) 28.42ms
Sep 17 14:27:13 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:13.639 JupyterHub log:174] 302 GET / -> /hub/ (@134.103.220.84) 2.70ms
Sep 17 14:27:13 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:13.726 JupyterHub log:174] 302 GET /hub/ -> /hub/login (@134.103.220.84) 1.09ms
Sep 17 14:27:13 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:13.834 JupyterHub log:174] 200 GET /hub/login (@134.103.220.84) 44.12ms
Sep 17 14:27:46 v2202006117608119727 python3[15342]: [W 2020-09-17 14:27:46.191 JupyterHub user:692] j2salome's server never showed up at http://127.0.0.1:33309/user/j2salome/ after 30 seconds. Giving up
Sep 17 14:27:47 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:47.232 JupyterHub log:174] 200 POST /hub/api/users/j2jana/activity (j2jana@127.0.0.1) 979.26ms
Sep 17 14:27:47 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:47.289 JupyterHub log:174] 200 POST /hub/api/users/j2nina/activity (j2nina@127.0.0.1) 1009.45ms
Sep 17 14:27:47 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:47.379 JupyterHub log:174] 200 POST /hub/api/users/j2lilli/activity (j2lilli@127.0.0.1) 1057.95ms
Sep 17 14:27:47 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:47.640 JupyterHub log:174] 200 GET /hub/api/authorizations/token/[secret] (j2lilli@127.0.0.1) 1313.28ms
Sep 17 14:27:47 v2202006117608119727 python3[15342]: [W 2020-09-17 14:27:47.883 JupyterHub base:982] User j2salome is slow to become responsive (timeout=10)
Sep 17 14:27:48 v2202006117608119727 python3[15342]: [W 2020-09-17 14:27:48.084 JupyterHub base:714] Failed login for pelleran
Sep 17 14:27:48 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:48.130 JupyterHub log:174] 200 POST /hub/login?next= (@134.103.220.84) 375.33ms
Sep 17 14:27:51 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:51.176 JupyterHub log:174] 200 GET /hub/api (@127.0.0.1) 14.79ms
Sep 17 14:27:51 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:51.334 JupyterHub log:174] 200 POST /hub/api/users/j2salome/activity (j2salome@127.0.0.1) 143.66ms
Sep 17 14:27:53 v2202006117608119727 python3[15342]: [W 200917 14:27:53 __init__:139] Not culling server j2salome with pending stop
Sep 17 14:27:53 v2202006117608119727 python3[15342]: [I 2020-09-17 14:27:53.715 JupyterHub log:174] 200 GET /hub/api/users (cull-idle@127.0.0.1) 27.00ms
Sep 17 14:28:04 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:04.455 JupyterHub base:707] User logged in: j2antonio
Sep 17 14:28:04 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:04.467 JupyterHub log:174] 302 POST /hub/login?next= -> /hub/spawn (j2antonio@134.103.220.84) 575.13ms
Sep 17 14:28:04 v2202006117608119727 useradd[25820]: new group: name=jupyter-j2antonio, GID=1069
Sep 17 14:28:04 v2202006117608119727 useradd[25820]: new user: name=jupyter-j2antonio, UID=1067, GID=1069, home=/home/jupyter-j2antonio, shell=/bin/sh
Sep 17 14:28:04 v2202006117608119727 python3[15342]: Adding user jupyter-j2antonio to group jupyterhub-users
Sep 17 14:28:04 v2202006117608119727 gpasswd[25831]: user jupyter-j2antonio added by root to group jupyterhub-users
Sep 17 14:28:05 v2202006117608119727 python3[15342]: Running as unit: jupyter-j2antonio.service
Sep 17 14:28:05 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:05.496 JupyterHub log:174] 302 GET /hub/spawn -> /hub/spawn-pending/j2antonio (j2antonio@134.103.220.84) 1011.04ms
Sep 17 14:28:05 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:05.551 JupyterHub pages:347] j2antonio is pending spawn
Sep 17 14:28:05 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:05.558 JupyterHub log:174] 200 GET /hub/spawn-pending/j2antonio (j2antonio@134.103.220.84) 17.01ms
Sep 17 14:28:10 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:10.776 JupyterHub log:174] 302 GET / -> /hub/ (@134.103.220.84) 32.76ms
Sep 17 14:28:10 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:10.972 JupyterHub log:174] 302 GET /hub/ -> /user/j2jana/ (j2jana@134.103.220.84) 110.71ms
Sep 17 14:28:11 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:11.378 JupyterHub log:174] 200 GET /hub/api/authorizations/token/[secret] (j2jana@127.0.0.1) 111.91ms
Sep 17 14:28:12 v2202006117608119727 python3[15342]: [W 2020-09-17 14:28:12.593 JupyterHub _version:56] jupyterhub version 1.1.0 != jupyterhub-singleuser version 1.0.0. This could cause failure to authenticate and result in redirect loops!
Sep 17 14:28:12 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:12.594 JupyterHub base:855] User j2antonio took 8.100 seconds to start
Sep 17 14:28:12 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:12.596 JupyterHub proxy:262] Adding user j2antonio to proxy /user/j2antonio/ => http://127.0.0.1:56377
Sep 17 14:28:12 v2202006117608119727 python3[15342]: /opt/tljh/hub/lib/python3.6/site-packages/jupyterhub_traefik_proxy/traefik_utils.py:42: RuntimeWarning: Escape character '_' cannot be a safe character. Set allow_collisions=True if you want to allow ambiguous escaped strings.
Sep 17 14:28:12 v2202006117608119727 python3[15342]: return server_type + "_" + escapism.escape(routespec, safe=safe)
Sep 17 14:28:12 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:12.635 JupyterHub proxy:135] Waiting for /user/j2antonio to register with traefik
Sep 17 14:28:12 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:12.646 JupyterHub log:174] 200 GET /hub/api (@127.0.0.1) 4.22ms
Sep 17 14:28:12 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:12.764 JupyterHub log:174] 200 POST /hub/api/users/j2antonio/activity (j2antonio@127.0.0.1) 90.21ms
Sep 17 14:28:13 v2202006117608119727 python3[15342]: /opt/tljh/hub/lib/python3.6/site-packages/jupyterhub_traefik_proxy/traefik_utils.py:42: RuntimeWarning: Escape character '_' cannot be a safe character. Set allow_collisions=True if you want to allow ambiguous escaped strings.
Sep 17 14:28:13 v2202006117608119727 python3[15342]: return server_type + "_" + escapism.escape(routespec, safe=safe)
Sep 17 14:28:13 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:13.565 JupyterHub users:609] Server j2antonio is ready
Sep 17 14:28:13 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:13.569 JupyterHub log:174] 200 GET /hub/api/users/j2antonio/server/progress (j2antonio@134.103.220.84) 7846.80ms
Sep 17 14:28:13 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:13.596 JupyterHub log:174] 302 GET /hub/spawn-pending/j2antonio -> /user/j2antonio/ (j2antonio@134.103.220.84) 8.12ms
Sep 17 14:28:13 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:13.682 JupyterHub log:174] 302 GET /hub/api/oauth2/authorize?client_id=jupyterhub-user-j2antonio&redirect_uri=%2Fuser%2Fj2antonio%2Foauth_callback&response_type=code&state=[secret] -> /user/j2antonio/oauth_callback?code=[secret]&state=[secret] (j2antonio@134.103.220.84) 20.41ms
Sep 17 14:28:13 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:13.736 JupyterHub log:174] 200 POST /hub/api/oauth2/token (j2antonio@127.0.0.1) 32.22ms
Sep 17 14:28:13 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:13.758 JupyterHub log:174] 200 GET /hub/api/authorizations/token/[secret] (j2antonio@127.0.0.1) 19.44ms
Sep 17 14:28:20 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:20.627 JupyterHub log:174] 200 GET /hub/home (j2antonio@134.103.220.84) 222.44ms
Sep 17 14:28:37 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:37.526 JupyterHub log:174] 302 GET /user/max/api/contents/AlgoDat_0917/L0%20Wiederholung_Datentypen.ipynb?content=0&_=1600344309523 -> /hub/user/max/api/contents/AlgoDat_0917/L0%20Wiederholung_Datentypen.ipynb?content=0&_=1600344309523 (@134.103.220.84) 10.37ms
Sep 17 14:28:37 v2202006117608119727 python3[15342]: [W 2020-09-17 14:28:37.835 JupyterHub base:1262] Failing suspected API request to not-running server: /hub/user/max/api/contents/AlgoDat_0917/L0%20Wiederholung_Datentypen.ipynb
Sep 17 14:28:37 v2202006117608119727 python3[15342]: [E 2020-09-17 14:28:37.848 JupyterHub log:174] 503 GET /hub/user/max/api/contents/AlgoDat_0917/L0%20Wiederholung_Datentypen.ipynb?content=0&_=1600344309523 (max@134.103.220.84) 120.48ms
Sep 17 14:28:38 v2202006117608119727 python3[15342]: [W 2020-09-17 14:28:38.071 JupyterHub log:174] 405 PUT /user/max/api/contents/AlgoDat_0917/L0%20Wiederholung_Datentypen.ipynb (@134.103.220.84) 10.12ms
Sep 17 14:28:38 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:38.829 JupyterHub log:174] 200 GET /hub/api/authorizations/token/[secret] (j2nina@127.0.0.1) 78.44ms
Sep 17 14:28:44 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:44.081 JupyterHub base:707] User logged in: j2salome
Sep 17 14:28:44 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:44.087 JupyterHub log:174] 302 POST /hub/login?next= -> /user/j2salome/ (j2salome@134.103.220.84) 595.37ms
Sep 17 14:28:44 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:44.257 JupyterHub log:174] 302 GET /user/j2salome/ -> /hub/user/j2salome/ (@134.103.220.84) 2.94ms
Sep 17 14:28:44 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:44.469 JupyterHub log:174] 303 GET /hub/user/j2salome/ (j2salome@134.103.220.84) 23.49ms
Sep 17 14:28:44 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:44.538 JupyterHub pages:347] j2salome is pending stop
Sep 17 14:28:44 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:44.629 JupyterHub log:174] 200 GET /hub/spawn-pending/j2salome?next=%2Fhub%2Fuser%2Fj2salome%2F (j2salome@134.103.220.84) 102.60ms
Sep 17 14:28:49 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:49.199 JupyterHub log:174] 200 POST /hub/api/users/j2daniel/activity (j2daniel@127.0.0.1) 48.46ms
Sep 17 14:28:49 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:49.760 JupyterHub pages:347] j2salome is pending stop
Sep 17 14:28:52 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:52.046 JupyterHub pages:347] j2salome is pending stop
Sep 17 14:28:53 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:53.672 JupyterHub login:43] User logged out: j2salome
Sep 17 14:28:53 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:53.731 JupyterHub log:174] 302 GET /hub/logout -> /hub/login (@134.103.220.84) 71.48ms
Sep 17 14:28:53 v2202006117608119727 python3[15342]: [I 2020-09-17 14:28:53.879 JupyterHub log:174] 200 GET /hub/api/users (cull-idle@127.0.0.1) 129.58ms
Sep 17 14:28:53 v2202006117608119727 python3[15342]: [W 200917 14:28:53 __init__:139] Not culling server j2salome with pending stop
Sep 17 14:28:55 v2202006117608119727 python3[15342]: /opt/tljh/hub/lib/python3.6/site-packages/jupyterhub_traefik_proxy/toml.py:104: RuntimeWarning: Escape character '_' cannot be a safe character. Set allow_collisions=True if you want to allow ambiguous escaped strings.
And I found this line in the logs:
jupyterhub version 1.1.0 != jupyterhub-singleuser version 1.0.0. This could cause failure to authenticate and result in redirect loops!
Can anyone help?
Thanx!