Troubleshooting

• Verify the JobManager REST endpoint URL and port are correct.
• Check network reachability (firewall / security group / VPC peering) between Flink Manager and the cluster.
• If TLS is enabled, confirm certificates are trusted and not expired.
• Confirm the cluster is running and healthy from the Flink CLI or UI.

• Make sure you copied the full token with no truncation or extra whitespace.
• Check the license expiry date — trial licenses are valid for 30 days.
• If you're on a trial, request a fresh trial license from the license page.

• Validate the job JAR/SQL syntax in the editor before submitting.
• Check cluster capacity — add task managers or enable auto-scaling if resources are exhausted.
• Review the job's error message in the job monitoring view.

Flink Manager keeps an audit log of administrative actions under Settings → Audit. Cluster- and job-level logs are surfaced in the monitoring views for each job; for deeper diagnostics, also check the Flink JobManager and TaskManager logs on your cluster.