Enable SSL for JupyterHub

To secure communication on JupyterHub with SSL, follow these steps:

1. Generate an SSL Certificate and Key: Run the following command to create an SSL certificate and private key.

openssl req \\

    -newkey rsa:2048 -nodes -keyout domain.key \\

    -x509 -days 365 -out jupyterhub.crt

• domain.key: The private key file.
• jupyterhub.crt: The SSL certificate file.

2. Update the JupyterHub Configuration: Add the SSL certificate and key file paths to the JupyterHub configuration file.

c.JupyterHub.ssl_cert = '_usr_odp_3.2.3.2-3_jupyter_jupyterhub.crt'

c.JupyterHub.ssl_key = '_usr_odp_3.2.3.2-3_jupyter_domain.key'

If using Ambari to manage JupyterHub, add these properties in the JupyterHub configuration section of the Ambari UI, as shown in the screenshot.

3. Save and Restart JupyterHub: After updating the configuration:
   • Save the changes.
   • Restart the JupyterHub service to apply the new SSL settings.

4. Troubleshooting SSL Disabling: If you disable SSL and restart JupyterHub but encounter browser-related issues (e.g., connection errors), clear your browser cache to resolve the problem.