docker-compose.yml

version: '3.9'

services:
  zookeeper-1:
    image: confluentinc/cp-zookeeper:latest
    container_name: zookeeper-1
    hostname: zookeeper-1
    ports:
      - 12181:2181
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000
    healthcheck:
      interval: 1s
      retries: 3
      start_period: 60s
      test: nc -z zookeeper-1 2181
      timeout: 5s

  zookeeper-2:
    image: confluentinc/cp-zookeeper:latest
    container_name: zookeeper-2
    hostname: zookeeper-2
    ports:
      - 22181:2181
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000
    healthcheck:
      interval: 1s
      retries: 3
      start_period: 60s
      test: nc -z zookeeper-2 2181
      timeout: 5s

  kafka-broker-1:
    image: confluentinc/cp-kafka:latest
    container_name: kafka-broker-1
    hostname: kafka-broker-1
    ports:
      - 19092:9092
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper-1:2181,zookeeper-2:2181
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_INTERNAL:PLAINTEXT
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka-broker-1:9092,PLAINTEXT_INTERNAL://localhost:19092
      KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
    depends_on:
      zookeeper-1:
        condition: service_healthy
      zookeeper-2:
        condition: service_healthy
    healthcheck:
      interval: 1s
      retries: 3
      start_period: 60s
      test: nc -z kafka-broker-1 9092
      timeout: 5s

  kafka-broker-2:
    image: confluentinc/cp-kafka:latest
    container_name: kafka-broker-2
    hostname: kafka-broker-2
    ports:
      - 29092:9092
    environment:
      KAFKA_BROKER_ID: 2
      KAFKA_ZOOKEEPER_CONNECT: zookeeper-1:2181,zookeeper-2:2181
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_INTERNAL:PLAINTEXT
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka-broker-2:9092,PLAINTEXT_INTERNAL://localhost:29092
      KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
    depends_on:
      zookeeper-1:
        condition: service_healthy
      zookeeper-2:
        condition: service_healthy
    healthcheck:
      interval: 1s
      retries: 3
      start_period: 60s
      test: nc -z kafka-broker-2 9092
      timeout: 5s

  schema-registry:
    image: confluentinc/cp-schema-registry:latest
    container_name: schema-registry
    hostname: schema-registry
    ports:
      - 8081:8081
    environment:
      SCHEMA_REGISTRY_HOST_NAME: schema-registry
      SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL: zookeeper-1:2181,zookeeper-2:2181
      SCHEMA_REGISTRY_LISTENERS: http://schema-registry:8081
      SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS: PLAINTEXT://kafka-broker-1:9092,PLAINTEXT_INTERNAL://localhost:19092
      SCHEMA_REGISTRY_DEBUG: 'true'
    depends_on:
      kafka-broker-1:
        condition: service_healthy
      kafka-broker-2:
        condition: service_healthy
    healthcheck:
      interval: 1s
      retries: 3
      start_period: 60s
      test: nc -z schema-registry 8081
      timeout: 5s