Docker Kafka Kraft

Apache Kafka Docker image using using Kafka Raft metadata mode (KRaft). In KRaft the Kafka metadata information will be stored as a partition within Kafka itself. There will be a KRaft Quorum of controller nodes which will be used to store the metadata. The metadata will be stored in an internal Kafka topic @metadata.

IMPORTANT: THIS IMAGE IS ONLY VALID FOR TEST PURPOSES AND NOT PRODUCTION USE.

Getting Started

$ docker pull moeenz/docker-kafka-kraft
$ docker run -e KRAFT_CONTAINER_HOST_NAME=kafka -e KRAFT_CREATE_TOPICS=topic-a,topic-b,topic-c -e KRAFT_PARTITIONS_PER_TOPIC=3 -e KRAFT_AUTO_CREATE_TOPICS=true moeenz/docker-kafka-kraft

• Now you can reach the container at localhost:9093 on your host machine or inside Docker network with hostname kafka.
• Comma seperated values received by KRAFT_CREATE_TOPICS env will be used to create topics at startup time.
• The KRAFT_AUTO_CREATE_TOPICS env variable lets you turn off auto topic creation (auto.create.topics.enable=false). Default Kafka behavior is true.

Compose Example

services:
  kafka:
    image: moeenz/docker-kafka-kraft:latest
    restart: always
    ports:
      - "9093:9093"
    environment:
      - KRAFT_CONTAINER_HOST_NAME=kafka
      - KRAFT_CREATE_TOPICS=topic-a,topic-b,topic-c
      - KRAFT_PARTITIONS_PER_TOPIC=3
      - KRAFT_AUTO_CREATE_TOPICS=true

Environment Variables

Name	Type	Description	Example
KRAFT_CONTAINER_HOST_NAME	string	Hostname for the running container as the Kafka listener	kafka
KRAFT_CREATE_TOPICS	[]string	Comma separated list of topics to be created post server setup	topic-a,topic-b,topic-c
KRAFT_PARTITIONS_PER_TOPIC	int	Number of partitions per topic	3
KRAFT_AUTO_CREATE_TOPICS	string	true or false, Kafka default behavior is true.	false

Resources

• https://adityasridhar.com/posts/how-to-easily-install-kafka-without-zookeeper

License

MIT License

Copyright (c) 2024 docker-kafka-kraft

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

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