c.NotebookApp.password = u'sha1:'
c.NotebookApp.open_browser = False
c.NotebookApp.port = 9999
c.NotebookApp.base_url = '/notebook/'
c.NotebookApp.allow_origin = '*'
c.NotebookApp.trust_xheaders = True

server {
listen   80;
server_name example.domain.com;
return 301 https://$server_name$request_uri;
server {
    listen              443 default_server ssl;
    server_name         example.domain.com;
    keepalive_timeout   70;
    ssl_certificate     chained.crt;
    ssl_certificate_key .key;
    ssl_protocols       TLSv1 TLSv1.1 TLSv1.2;
    ssl_ciphers         HIGH:!aNULL:!MD5;
    location / {
        proxy_pass http://localhost:8081;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    location /notebook {
        proxy_pass http://localhost:9999/notebook;
        proxy_set_header X-Real_IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-NginX-Proxy true;
        proxy_ssl_session_reuse off;
        proxy_set_header Host $http_host;
        proxy_redirect off;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";   
    location /notebook/nbextensions {
        proxy_pass http://localhost:9999/notebook/nbextensions/;
        proxy_set_header X-Real_IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-NginX-Proxy true;
        proxy_ssl_session_reuse off;
        proxy_set_header Host $http_host;
        # to configure the kernel for python
        proxy_redirect off;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";    
}

[W 11:02:37.568 NotebookApp] Unexpected error while saving file: notebook.ipynb [|
Errno 13] Permission denied: '/.ipynb_checkpoints/notebook-checkpoint.ipynb'|
[E 11:02:37.569 NotebookApp] {                                                                                                        |
      "Content-Type": "application/json",                                                                                             |
      "Connection": "upgrade",                                                                                                        |
      "Content-Length": "4600",                                                                                                       |
      "X-Real_ip": "xxx.xxx.xxx.xxx",                                                                                                 |
      "X-Xsrftoken": "2|f9bfac9e|92b9bb14e19945238a1b3445e08c86f7|1484213065",                                                        |
      "Cookie": "_xsrf=2|f9bfac9e|92b9bb14e19945238a1b3445e08c86f7|1484213065; username-example-domain-com=\"2|1:0|10:1484213084|27:us|
ername-example-domain-com|44:Mjk3MDYzYWU2M2FkNGVmNDlkZWFiMGY4NjU5NDZlOTU=|8b4ceb3a6ebd248a84beeffd867815c7269a98f2ba1a360562034ca21c95|
ae9a\"",                                                                                                                              |
      "Accept-Encoding": "gzip, deflate, br",                                                                                         |
      "User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0",                                   |
      "X-Nginx-Proxy": "true",                                                                                                        |
      "Referer": "https://example.domain.com/notebook/notebooks/notebook.ipynb", |
      "Accept-Language": "en-US,en;q=0.5",                                                                                            |
      "Accept": "application/json, text/javascript, */*; q=0.01",                                                                     |