Issue
The license expiry date displayed in the Fusion Admin UI or returned by the licensing API is inconsistent. The date may change between page refreshes or differ across API responses, creating uncertainty about the actual license validity.
Diagnosis
This issue applies if the Fusion Admin UI or license-related API endpoints show different license expiry dates without any recent license update. The behavior is typically intermittent and resolves temporarily after a service restart.
Environment
Fusion 4.x
Solr 7.x
This behavior is specific to Fusion 4.x deployments and does not apply to Fusion 5.x, which uses a different licensing and deployment model.
Cause
Fusion 4.x caches license metadata within the Fusion API service. Under certain conditions, this cache can become stale or inconsistent, causing the UI or API to display outdated or conflicting license information even though the underlying license file is valid.
Resolution
Clear the license cache and restart the Fusion API services so that the license information is reloaded directly from the license file.
Clear the license cache
Run the following command against the Fusion API service to remove cached license data:
curl -u <username>:<password> -X DELETE http://<fusion-host>:8764/api/apollo/license/cacheThis action clears only the cached license metadata. It does not delete or invalidate the license file installed on the cluster.
Restart Fusion API services
Restart the Fusion API services on each node where they are running. Restarting the services ensures that all API instances reload the current license information and display consistent expiry details.
Note: Restarting Fusion API services may briefly affect availability. Schedule this step during a maintenance window if uninterrupted access is required.
After completing these steps, verify that the license expiry date is displayed consistently across the Admin UI and API responses.