To be a bit more precise -- I have the Cloud9 SDK packaged in 'standalone' 
most listening to port 8888 and that container starts up just fine when 
JupyterHub launches it through kubernetes.

When I launch the same container using docker and go to e.g. 
http://localhost:8888, I get a 302 to redirect to /ide.html and then the 
Cloud9 IDE displays properly.

When the C9 container launches from JupyterHub, I am redirected to 
https://jhub.a.b.c.d.xip.ui/user/grunwald --- however, rather than getting 
a 302 redirect, I get a message "Cannot GET /user/grunwald" indicating that 
some routing hasn't been set up internally or that there's an authorization 
failure because I don't completely understand how JupyterHub assumes the 
proxied web service / notebook coordinate. What I was expecting was the 302 
-> then to /user/grunwald/ide.html which I assume would be proxied as 
/ide.html to the container.

I also get this using curl e.g. "*curl --insecure 
https://jhub.35.185.207.218.xip.io/user/grunwald                           
            *

*Cannot GET /user/grunwald"*

Do I need to use something to establish a cookie between the proxy & the 
backend web server?
I saw  "GET /authorizations/cookie/{cookie_name}/{cookie_value}" in the API 
docs, but wasn't clear how to use that.


I realize this is a somewhat non-standard use of JupyterHub, but my goal is 
to have one system set up the NFS, authorization, etc for both the notebook 
interface and other web services.


On Saturday, March 4, 2017 at 6:10:20 PM UTC-7, Dirk Grunwald wrote:
>
> We'd like to use JupyterHub (on google kubernetes) as a programming 
> environment for students. We'd also like to use Cloud9's SDK because it's a 
> better programming environment (IMHO) for non-notebook programs.
>
> I want to use JupyterHub as the authentication & multiplex agent -- i.e. 
> students can decide which environment to use, and they'll have the same NFS 
> mount either way (I'm basing my setup on the recipe at 
> https://github.com/ssableslb/gke-jupyter-classroom )
>
> I'm trying to figure out how to get JupyterHub to start up my C9 SDK 
> container - that container pops up at port 8888 like an ipython notebook 
> would when I run it locally, but I can't seem to broker a connection -- I'm 
> guessing that it needs to somehow pass information to JupyterHub to 
> authorize the connection, but I am having trouble finding the documentation 
> on that. I've looked at the docs for JupyterHub and Jupyter, but the 
> Jupyter documentation appears to focus on the communication to the specific 
> kernels (as opposed to the web GUI part).
>
> Any suggestions of what doc/code to examine welcome.
>
> Thanks
>

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