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Debugging 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 must be able to identify and resolve most issues related to the server startup with YarnSpawner and HDFSCM.