kafka cannot connect to write

Question

The error when calling the producer remotely to write data is as follows

ERROR Error when sending message to topic test with key: null, value: 6 bytes with error: (org.apache.kafka.clients.producer.internals.ErrorLoggingCallback)

Kafka can produce and consume when connected locally

Answer 1

vi config/server.properties

Listeners listening annotation opens and specifies the current machine IP and port

For details, please refer to the problem that kafka cannot connect remotely