A cluster through an external web address and external communication, use of kafka in CDH version 0.10, the network and public network port mapping, now want to external production message sent to kafka, access to see a lot about the network configuration, to try all the below combination, finally still can't access, doubt is probably a modified configuration items file kafka didn't take effect, it is possible that the port mapping problem, could you tell me this how to troubleshoot this problem need,