Error while executing topic command : replication factor: 3 larger than available brokers: 2

Error while executing topic command : replication factor: 3 larger than available brokers: 2

kafka-topics.sh --zookeeper 130.51.23.249:5101 --create --topic UserLoginLog --replication-factor 3 --partitions 1
# 會報錯
Error while executing topic command : replication factor: 3 larger than available brokers: 2
[2018-12-12 17:02:16,220] ERROR kafka.admin.AdminOperationException: replication factor: 3 larger than available brokers: 2
        at kafka.admin.AdminUtils$.assignReplicasToBrokers(AdminUtils.scala:117)
        at kafka.admin.AdminUtils$.createTopic(AdminUtils.scala:403)
        at kafka.admin.TopicCommand$.createTopic(TopicCommand.scala:110)
        at kafka.admin.TopicCommand$.main(TopicCommand.scala:61)
        at kafka.admin.TopicCommand.main(TopicCommand.scala)
 (kafka.admin.TopicCommand$)

解決：replication-factor個數不能超過broker的個數。需改成少於等於2個。