In order to list consumers, you can use:
/usr/hdp/current/kafka-broker/bin/kafka-consumer-groups.sh --zookeeper <zkHost>:<zkPort> --list
Note: This will only show information about consumers that use ZooKeeper (not those using the Java consumer API).
/usr/hdp/current/kafka-broker/bin/kafka-consumer-groups.sh --bootstrap-server <bokerHost:BrokerPort> --list
Note: This will only show information about consumers that use the Java consumer API (non-ZooKeeper-based consumers).
If you're using kerberos:
/usr/hdp/current/kafka-broker/bin/kafka-consumer-groups.sh --bootstrap-server <bokerHost:BrokerPort> --list --new-consumer --command-config /tmp/test.properties
cat/tmp/test.properties
security.protocol=PLAINTEXTSASL
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