Hi@akhtar,
To create multiple producer you have to create copies of config/server.properties file. Say, you want to create three producer.
So, make two copies of config/server.properties file and change broker-id, port no. After that run the below command according to your port no three times.
$ ./bin/kafka-console-producer.sh --broker-list localhost:9092 --topic topic-name
Hope this will work.
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Thank You