When an additional proxy is in front, such an error generally means that
the proxy isn’t proxying websocket connections correctly, which requires
some extra configuration <https://www.nginx.com/blog/websocket-nginx/>.
In nginx config, this can look like:
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
...
location / {
...
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
}
-Min
On Mon, May 22, 2017 at 7:03 AM, <[email protected]> wrote:
> Hi Everyone,
>
> I am running jupyterhub within a Docker container behind an nginx proxy
> and it's been working really well for several months.
>
> I now have a user who can launch a python2 or python3 kernel but then
> cannot connect. I don't see any errors in either the jupyterhub or nginx
> logs.
>
> Any recommendations as to how to troubleshoot this further?
>
> --John
>
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