Monitor via Confluent Platform UI

The Kafka Monitoring UI can be found at http://<localhost>:9021/management/connect

confluent metrics
Figure 1. Confluent Importing Metrics

They show up properly in my topic, and then are added to Neo4j via the sink.

Below you see the data that has been ingested into Neo4j. During my testing I got up to more than 2M events.

confluent imported data
Figure 2. Confluent Platform Management

Kafka Connect Client Config Override Policy

In Apache Kafka 2.3.0 was introduced the ability for each source and sink connector to inherit their client configurations from the worker properties.