Why I cannot connect to Kafka from outside?

Question

I am running kafka on ec2 instance. So amazon ec2 instance has two ips one is internal ip and second one is for external use.

I created producer from local machine,

Answer 1

Below are the steps to connect Kafka from outside of EC2 instance.

1. Open Kafka server properties file on EC2.

   /kafka_2.11-2.0.0/config/server.properties

2. Set the value of advertised.listeners to

   advertised.listeners=PLAINTEXT://ec2-xx-xxx-xxx-xx.compute-1.amazonaws.com:9092

   This should be your Public DNS (IPv4) of EC2 instance.

3. Stop Kafka server.

4. Start Kafka server to see above configuration changes in action.

5. Now you can connect to your Kafka of EC2 instance from outside or from your localhost.

   Tried and tested on kafka_2.11-2.0.0