https://www.ibm.com/docs/en/instana-observability?topic=ukdslx6-migration-from-zookeper-apache-kafka-raft-kraft-kafka-online
Migration from Zookeper to Apache Kafka Raft (KRaft) for Kafka online
KRaft replaces Zookeeper. Kafka pods become brokers, and Zookeeper pods become controllers. Kafka runs on dual-mode during the migration.
apache kafkamigrationraftonline