docker-compose.yaml

services:
  kafka-1:
    image: apache/kafka:3.9.0
    hostname: kafka-1
    container_name: kafka-1
    ports:
      - 29092:9092
    environment:
      KAFKA_NODE_ID: 1
      KAFKA_PROCESS_ROLES: 'broker,controller'
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: 'CONTROLLER:PLAINTEXT,PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT'
      KAFKA_CONTROLLER_QUORUM_VOTERS: '1@kafka-1:9093,2@kafka-2:9093,3@kafka-3:9093'
      KAFKA_LISTENERS: 'PLAINTEXT://:19092,CONTROLLER://:9093,PLAINTEXT_HOST://:9092'
      KAFKA_INTER_BROKER_LISTENER_NAME: 'PLAINTEXT'
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka-1:19092,PLAINTEXT_HOST://localhost:29092
      KAFKA_CONTROLLER_LISTENER_NAMES: 'CONTROLLER'
      CLUSTER_ID: '4L6g3nShT-eMCtK--X86sw'
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
      KAFKA_LOG_DIRS: '/tmp/kraft-combined-logs'

  kafka-2:
    image: apache/kafka:3.9.0
    hostname: kafka-2
    container_name: kafka-2
    ports:
      - 39092:9092
    environment:
      KAFKA_NODE_ID: 2
      KAFKA_PROCESS_ROLES: 'broker,controller'
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: 'CONTROLLER:PLAINTEXT,PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT'
      KAFKA_CONTROLLER_QUORUM_VOTERS: '1@kafka-1:9093,2@kafka-2:9093,3@kafka-3:9093'
      KAFKA_LISTENERS: 'PLAINTEXT://:19092,CONTROLLER://:9093,PLAINTEXT_HOST://:9092'
      KAFKA_INTER_BROKER_LISTENER_NAME: 'PLAINTEXT'
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka-2:19092,PLAINTEXT_HOST://localhost:39092
      KAFKA_CONTROLLER_LISTENER_NAMES: 'CONTROLLER'
      CLUSTER_ID: '4L6g3nShT-eMCtK--X86sw'
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
      KAFKA_LOG_DIRS: '/tmp/kraft-combined-logs'

  kafka-3:
    image: apache/kafka:3.9.0
    hostname: kafka-3
    container_name: kafka-3
    ports:
      - 49092:9092
    environment:
      KAFKA_NODE_ID: 3
      KAFKA_PROCESS_ROLES: 'broker,controller'
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: 'CONTROLLER:PLAINTEXT,PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT'
      KAFKA_CONTROLLER_QUORUM_VOTERS: '1@kafka-1:9093,2@kafka-2:9093,3@kafka-3:9093'
      KAFKA_LISTENERS: 'PLAINTEXT://:19092,CONTROLLER://:9093,PLAINTEXT_HOST://:9092'
      KAFKA_INTER_BROKER_LISTENER_NAME: 'PLAINTEXT'
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka-3:19092,PLAINTEXT_HOST://localhost:49092
      KAFKA_CONTROLLER_LISTENER_NAMES: 'CONTROLLER'
      CLUSTER_ID: '4L6g3nShT-eMCtK--X86sw'
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
      KAFKA_LOG_DIRS: '/tmp/kraft-combined-logs'

  # Schema Registry
  schema-registry:
    image: confluentinc/cp-schema-registry:latest
    container_name: schema-registry
    depends_on:
      - kafka-1
      - kafka-2
      - kafka-3
    environment:
      SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS: PLAINTEXT://kafka-1:19092,PLAINTEXT://kafka-2:19092,PLAINTEXT://kafka-3:19092
      SCHEMA_REGISTRY_HOST_NAME: schema-registry
      SCHEMA_REGISTRY_LISTENERS: http://0.0.0.0:8081
    ports:
      - "8081:8081"

  kafdrop:
    image: obsidiandynamics/kafdrop
    container_name: kafdrop
    depends_on:
      - kafka-1
      - kafka-2
      - kafka-3
    ports:
      - 9000:9000
    environment:
      KAFKA_BROKERCONNECT: kafka-1:19092,kafka-2:19092,kafka-3:19092
      KAFKA_PROPERTIES: |
        bootstrap.servers=kafka-1:19092,kafka-2:19092,kafka-3:19092
        schema.registry.url=http://schema-registry:8081
      SERVER_PORT: 9000