kafka内网网同时访问配置

有3台kafka集群broker，以下ip地址均属杜撰，仅仅做举例用

hostname	内网ip	外网Ip
kafka1	192.168.1.201	139.28.39.101
kafka2	192.168.1.202	139.28.39.102
kafka3	192.168.1.203	139.28.39.103

方法1 配置hosts方式

本来kafka集群配置的listener参数如下:

# The address the socket server listens on. It will get the value returned from 
# java.net.InetAddress.getCanonicalHostName() if not configured.
#   FORMAT:
#     listeners = listener_name://host_name:port
#   EXAMPLE:
#     listeners = PLAINTEXT://your.host.name:9092
listeners=PLAINTEXT://192.168.1.201:9092

这样内网能正常访问kafka集群，外网访问不了！
换成外网IP，kafka集群配置的listener参数如下:

# The address the socket server listens on. It will get the value returned from 
# java.net.InetAddress.getCanonicalHostName() if not configured.
#   FORMAT:
#     listeners = listener_name://host_name:port
#   EXAMPLE:
#     listeners = PLAINTEXT://your.host.name:9092
listeners=PLAINTEXT://139.28.39.101:9092

这样外网能访问，但是内网也走外网访问。
注意事项：配置监听外网ip方式实现内外网都访问，有安全隐患，并且kafka集群之间节点的连接会走外网， 网络抖动，导致服务出现不可用。

怎样才能让内网访问走内网，外网访问走外网呢？

采取如下解决方案，成功处理掉问题！！！
注释如上listener配置，然后打开下面的advertised listener配置：

# The address the socket server listens on. It will get the value returned from 
# java.net.InetAddress.getCanonicalHostName() if not configured.
#   FORMAT:
#     listeners = listener_name://host_name:port
#   EXAMPLE:
#     listeners = PLAINTEXT://your.host.name:9092
#listeners=PLAINTEXT://192.168.1.201:9092

# Hostname and port the broker will advertise to producers and consumers. If not set, 
# it uses the value for "listeners" if configured.  Otherwise, it will us