Scaling up Kafka broker nodes
Learn how you can upscale Kafka broker nodes in a Streams Messaging cluster.
The Kafka broker nodes in a Streams Messaging cluster can be upscaled. During an upscale operation, broker nodes are added to the Broker host group.
An upscale operation behaves differently depending on whether the Cruise Control service is available on the cluster. If Cruise Control is available on the cluster, newly commissioned brokers are automatically detected, a rebalance is triggered once they become available, and data is moved to the new brokers. If Cruise Control is not available on the cluster, data must be moved to the new brokers manually.
- Ensure that you have reviewed Scaling Kafka broker nodes.
- Ensure that the cluster, its hosts, and all its services are healthy.
- Ensure that the Kafka brokers are commissioned and running.
- Ensure that the Cruise Control service (if available) is running.