reload ssl certs with SIGHUP

[minrk]

when using letsencrypt, rereading SSL key/cert config is useful. With nginx, etc. sending SIGHUP is a common way to trigger 'reload config' without relaunching. It would be nice to reread ssl cert/key files on SIGHUP if we can.

[marhoy]

Is this still open, or is there a way to make jupyterhub reload the certificates without stopping and starting the server?

[minrk]

@marhoy it is. JupyterHub doesn't need to be restarted, just the proxy process. Addressing this feature would be very useful!