Unable to list all kafka brokers on zookeeper host

Question

I have setup 3 zookeeper + 5 brokers. However when I try to list all brokers on one zookeeper host, it only return two brokers id.

I run below command on zookeeper host: `> /opt/kafka/current/bin/zookeeper-shell.sh localhost:2181

ls /brokers/ids [111, 112]`

expect: return all 5 brokers ids

Any of your help is much appreciated, many thanks