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Debug Issues with YarnSpawner and HDFSCM

If you encounter issues while starting the server with YarnSpawner and HDFSCM, follow these steps to debug:

  • Check the YARN Logs:
  • Use the application ID to view YARN logs:
yarn logs -applicationId application_1732264491158_0038
  • Examine the JupyterHub Logs.
  • Review the JupyterHub logs located in
_var_log_jupyterhub


- Verify JupyterHub Service Status: Check the status of the JupyterHub service using the following command:

systemctl status jupyterhub.service
  • Inspect the JupyterHub Service Logs.
  • Use the journalctl command to view recent logs for the JupyterHub service:
journalctl -u jupyterhub -n 100 --no-pager

By following these steps, you should be able to identify and resolve most issues related to server startup with YarnSpawner and HDFSCM.