NetOps PM/Topology Kafka TopicAuthorizationException Log Flood

Products

• Network Observability

Issue/Introduction

Administrators may observe a rapid, multi-gigabyte per day growth in the Data Aggregator logs (netops-data-aggregator.log).

This log is driven by a continuous flood of the following error: TopicAuthorizationException: Not authorized to access topics: [netops.topology.control]

Environment

NetOps 25.4.x Environment 

Cause

The error is generated by the kafka.OnDemandItemStatusConsumer.cfg configuration attempting to access a Kafka topic.

Broadcom Engineering has confirmed that this specific feature functionality is not currently in use.

 

Resolution

Because the feature is not being utilized, it can be safely disabled to eliminate the log flood.

1. Locate and open the configuration file: kafka.OnDemandItemStatusConsumer.cfg.

2. Modify the file to disable the feature: feature.enabled=off.

3. Monitor the netops-data-aggregator.log to confirm the TopicAuthorizationException flood has stopped and log growth has returned to a normal baseline.

Additional Information

Setting this feature to disabled will not cause any issues in Topology, as the functionality is not currently in use.

Broadcom Engineering is evaluating whether to keep this feature disabled by default in upcoming product releases.