Produce Kafka Messages with Key-Value Pairs Using Docker - Easy Tutorial!
In this quick and easy tutorial, learn how to produce Kafka topic messages using key-value pairs with Docker. We’ll walk you through the entire process step by step, from setting up your Docker container to sending messages to Kafka. Whether you're a beginner or looking to refine your skills, this video will help you get up and running fast!
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How to Run the Kafka:
===========================
Step 1 : Create Yaml file with following text which is given below :
version: '3'
services:
zookeeper:
image: bitnami/zookeeper
container_name: zookeeper
ports:
'2181:2181'
environment:
ALLOW_ANONYMOUS_LOGIN: 'yes'
networks:
kafka_nat
kafka:
image: bitnami/kafka
container_name: kafka
ports:
'9092:9092'
environment:
KAFKA_BROKER_ID: 1
KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092
KAFKA_PLAINTEXT_LISTENER: PLAINTEXT://localhost:9092
depends_on:
zookeeper
networks:
kafka_nat
networks:
kafka_nat:
driver: bridge
Step 2 : Up the Docker compose file using below command:
go to above save file location and run below command :
docker-compose -f docker-compose-file name up
Step 3 : Open another CMD and run below command for checking the running container information.
docker ps
Step 4 : Go to inside the container by using below command :
docker exec -it containerName bash
Step 5 : After inside the container run below command for checking all topics name list.
kafka-topics.sh --list --bootstrap-server kafka:9092
Step 6 : After inside the container run below command for create the topic name.
kafka-topics.sh --create --topic testdemo --bootstrap-server kafka:9092 --partitions 1 --replication-factor 1
Step 7 : Check all the information of the Kafka topics using below command
kafka-topics.sh --describe --topic testdemo --bootstrap-server kafka:9092
Step 8 : Produce the message by using kafka producer command with key and value pair:
kafka-console-producer.sh --topic testdemo --property "parse.key=true" --property "key.separator=:" --bootstrap-server kafka:9092
Then pass the message as key value pair like name: java classified etc
Step 9 : Consume the kafka topic message usinf kafka Consumer command with key value pair :
kafka-console-consumer.sh --topic testdemo --property "print.key=true" --property "print.value=true" --bootstrap-server kafka:9092
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