iiab/roles/jupyterhub/templates/jupyterhub-nginx.conf

location /jupyterhub {
    proxy_pass http://127.0.0.1:8000;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-NginX-Proxy true;
}

# Managing WebHook/Socket requests between hub user servers and external proxy
location ~* /(api/kernels/[^/]+/(channels|iopub|shell|stdin)|terminals/websocket)/? {
    proxy_pass http://127.0.0.1:8000;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

    # WebSocket support
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;
    proxy_set_header X-Scheme $scheme;
    proxy_buffering off;
}

# Managing requests to verify letsencrypt host
location ~ /.well-known {
    allow all;
}