[kafka] Error while executing topic command : Replication factor: 4 larger than available brokers: 3.

카프카 브로커가 3개인데 레플리카 펙터가 4개인 토픽을 만들 때 발생하는 에러이다.

[appuser@kafka-1 ~]$ kafka-topics --create --bootstrap-server kafka-1:9092,kafka-2:9093,kafka-3:9094 --replication-factor 1 --partitions 1 --topic mytopic-1-1
Created topic mytopic-1-1.
[appuser@kafka-1 ~]$ kafka-topics --create --bootstrap-server kafka-1:9092,kafka-2:9093,kafka-3:9094 --replication-factor 2 --partitions 2 --topic mytopic-2-2
Created topic mytopic-2-2.
[appuser@kafka-1 ~]$ kafka-topics --create --bootstrap-server kafka-1:9092,kafka-2:9093,kafka-3:9094 --replication-factor 3 --partitions 3 --topic mytopic-3-3
Created topic mytopic-3-3.
[appuser@kafka-1 ~]$ kafka-topics --create --bootstrap-server kafka-1:9092,kafka-2:9093,kafka-3:9094 --replication-factor 4 --partitions 4 --topic mytopic-4-4
Error while executing topic command : Replication factor: 4 larger than available brokers: 3.
[2022-06-12 09:32:38,992] ERROR org.apache.kafka.common.errors.InvalidReplicationFactorException: Replication factor: 4 larger than available brokers: 3.
 (kafka.admin.TopicCommand$)

 

kafka-topics --list --bootstrap-server kafka-1:9092,kafka-2:9093,kafka-3:9094

 

kafka-topics --create --bootstrap-server kafka-1:9092,kafka-2:9093,kafka-3:9094 --replication-factor 4 --partitions 3 --topic mytopic-4-3
kafka-topics --create --bootstrap-server kafka-1:9092,kafka-2:9093,kafka-3:9094 --replication-factor 3 --partitions 4 --topic mytopic-3-4
kafka-topics --list --bootstrap-server kafka-1:9092,kafka-2:9093,kafka-3:9094