Add notes from Sept 2024 collab cafe

docs/meetings/collab-cafe/2024.md

@@ -1,5 +1,58 @@
 # 2024 Collaboration Cafe Notes Archive
 
+## 2024-09-17
+
+### Check-in
+
+- Min / @minrk / Simula
+- Samuel Gaist / @sgaist / Idiap Research Institute (might be 5 min late)
+- Sarah Gibson / @sgibson91 / 2i2c
+- Erik Sundell / @consideratio / 2i2c
+- Arnim Bleier /@arnim / GESIS
+- Dan Sholler / @dsholler / Organizational Mycology
+- shane knapp / @shaneknapp / UC Berkeley
+- Kirstie Whitaker / @KirstieJane / Alan Turing Institute
+- Raniere Silva / @rgaiacs / GESIS
+
+### Celebrations and Shout-Outs :tada:
+
+- Erik (@consideRatio) doing lots of maintenance and update on ldapauthenticator and others. Thank you!
+- notebook 7 now on mybinder.org
+
+## Agenda :clock2:
+
+- **Min (10m)**: spreading meeting facilitation responsibilities: <https://github.com/jupyterhub/team-compass/issues/737>
+  - Maybe bring it up on the forum
+  - wider advertisement of meetings, e.g. forum. Most things are only on Issues right now
+  - relying on volunteers leads ot bias in who participates
+  - Sarah offers mentorship for facilitators
+  - Broader question: Standing agenda item on community engagement/activity, who is coming or not, etc.
+  - Nominate a person to make a list of where to share things (write here:
+    - Jupyter forum
+    - Twitter? / Mastodon? Do we have those accounts anymore?
+    - Gitter?
+- **Dan Sholler (5 minutes)**: Voices of Jupyter Research Project with The Turing Way
+  - SoW here: <https://docs.google.com/document/d/1M2kfwvT7KHfgWd2Qph3BIM7seyrb8Lt23cVE_1HzvMw/edit#heading=h.x5kwcnqrf9m2>
+  - Track progress and contribute here: <https://github.com/the-turing-way/jupyterhub-orgmyc-EOSS>
+  - Past report as a sample: <https://astropy-dei.orgmycology.com/>
+- **Arnim c/o Min (10m)**: discuss GESIS in mybinder.org
+  - <https://github.com/jupyterhub/mybinder.org-deploy/issues/3087>
+  - <https://github.com/jupyterhub/mybinder.org-deploy/issues/3083>
+  - nebulous "issues" launching repos that don't have local images
+  - local image cache limited to 2TB, if it needs to be pulled from docker hub lots of traffic and sometimes very slow
+  - If pull fails due to timeout, this triggers a new build
+  - short-term: Lower GESIS role in federation to avoid timeouts
+  - "passthrough" registry docker configuration to reduce push/pull roundtrip all the way to docker hub
+- **Shane (no idea how much time)**: Configurable HTTP proxy running out of ephemeral ports
+  - happens when ~300+ users are logged and working simultaneously
+  - massive user impact
+  - <https://github.com/jupyterhub/configurable-http-proxy/issues/388#issuecomment-2347600588>
+  - <https://blog.cloudflare.com/how-to-stop-running-out-of-ephemeral-ports-and-start-to-love-long-lived-connections/>
+    - `The default ephemeral port range contains more than 28,000 ports (60999+1-32768=28232). Does that mean we can have at most 28,000 outgoing connections? That’s the core question of this blog post!`
+  - do we limit # of users per hub (will be 'difficult' for some course-specific hubs w/1200 users)?
+  - somehow load-balance the chp (a bit meta lol)
+  - Proposal to try switching to traefik again: <https://github.com/jupyterhub/zero-to-jupyterhub-k8s/issues/3497>
+
 ## 2024-08-20
 
 ### Check-in