Error Locating Unit: `K5Sp0VXg` - Unknown Work Unit in AWX/Ansible Tower

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Hi Ansible Community,

I’m encountering an issue in my AWX/Ansible Tower environment and would appreciate any insights or guidance on how to resolve it.

Error Details

The following error appears in the logs:

ERROR 2025/02/06 15:12:00 Error locating unit: K5Sp0VXg
ERROR 2025/02/06 15:12:00 unknown work unit K5Sp0VXg

This error occurs when the system is unable to locate a specific work unit (K5Sp0VXg). It seems to be related to task management, but I’m unsure of the root cause.

Environment Details

  • AWX Version: [22.7
  • Deployment Method: [AKS.]
  • Database: PostgreSQL
  • Logs: No additional errors in the task or web pod logs.

Steps Taken So Far

  1. Checked the status of AWX task pods – all are running without issues.
  2. Searched the database for the work unit K5Sp0VXg:
    SELECT * FROM main_unifiedjob WHERE uuid = 'K5Sp0VXg';
    The query returned no results, indicating the work unit is missing.
  3. Verified task synchronization – the task was submitted via the AWX API, but it seems it wasn’t recorded in the database.
  4. Restarted AWX task pods to clear any transient issues.

Questions

  1. I have two worker node and this is happening on only one worker node.
  2. What could cause a work unit to go missing in the database?
  3. Are there known issues with task synchronization in AWX/Ansible Tower?
  4. How can I prevent this issue from recurring?
  5. Is there a way to recover or recreate the missing work unit without disrupting the system?

Additional Context

  • This issue occurs intermittently, and I’ve noticed similar errors for other work units (e.g., wMvEP6LC, 9tzJOrvg).
  • The system is configured to automatically clean up completed tasks after 30 days.

Any help or suggestions would be greatly appreciated!

Thanks in advance,

Regards,
Manish Singh

2

Any input please on above request.