元数据响应-代理主机名错误

Question

I use python-kafka's SimpleConsumer to listen to a topic in kafka broker. Kafka broker is running on a machine with its hostname as BROKER_HOST. Now, SimpleConsumer requests for topic metadata from the broker BROKER_HOST for a topic TOPIC & gets a tuple

   (Broker metadata, Topic metadata)

Broker metadata comes as,

 {0: BrokerMetadata(nodeId=0, host='localhost', port=9092)}

and ideally, host value must be BROKER_HOST( hostname shell cmd confirms it) but it is localhost...

``How does the broker metadata for a topic get into kafka system? And obviously, this breaks the system since my consumer tries to connect to 9092 on its localhost.

Answer 1

This looks like your broker advertises itself incorrectly.

There's a line in your broker's server.properties :

#advertised.host.name=<hostname routable by clients>

You should uncomment it and set the value routable by your consumer and restart your broker.