Brokers in a cluster can use the BrokerAccessControlList class to authenticate Brokers that want to join the cluster. ACLs are only checked when a Broker joins the cluster.

You can use the BrokerAdminClient.getClusterACL method to obtain the ACL for the Broker's cluster.

You can use the BrokerAdminClient.setClusterACL method to configure the ACL for the Broker's cluster.