kafka connection problem

Kafka : Connection to node -1 could not be established. Broker may not be available

What is Kafka?

Apache Kafka is an open-source stream-processing software platform developed by LinkedIn and donated to the Apache Software Foundation, written in Scala and Java. The project aims to provide a unified, high-throughput, low-latency platform for handling real-time data feeds.

Error: 

Following Errors occurs when we have following causes:

1. The Listener is not correct in server.properties file.
2. The listener FQDN is not getting resolved.

Resolution:

1. Enter the Listener details correctly.

Change in server.properties :

#listeners=PLAINTEXT://:9092

to

listeners=PLAINTEXT://localhost:9092

2. Make sure your FQDN is getting resolved.

Now restart kafka Service.