docker-compose.yml

version: '3.4'
services:
  zookeeper:
    image: confluentinc/cp-zookeeper:5.3.1
    hostname: zookeeper
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
    healthcheck:
      test: ["CMD", "bash", "-c", "echo ruok | nc localhost 2181 | grep imok"]
      start_period: 30s

  kafka-1:
    image: confluentinc/cp-kafka:5.3.1
    hostname: kafka-1
    depends_on:
      - zookeeper
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka-1:9092
      KAFKA_DEFAULT_REPLICATION_FACTOR: 3
    healthcheck:
      test: ["CMD", "nc", "127.0.0.1", "9092"]
      start_period: 30s

  kafka-2:
    image: confluentinc/cp-kafka:5.3.1
    hostname: kafka-2
    depends_on:
      - zookeeper
    environment:
      KAFKA_BROKER_ID: 2
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka-2:9092
      KAFKA_DEFAULT_REPLICATION_FACTOR: 3
    healthcheck:
      test: ["CMD", "nc", "127.0.0.1", "9092"]
      start_period: 30s

  kafka-3:
    image: confluentinc/cp-kafka:5.3.1
    hostname: kafka-3
    depends_on:
      - zookeeper
    environment:
      KAFKA_BROKER_ID: 3
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka-3:9092
      KAFKA_DEFAULT_REPLICATION_FACTOR: 3
    healthcheck:
      test: ["CMD", "nc", "127.0.0.1", "9092"]
      start_period: 30s

  ksql:
    image: confluentinc/cp-ksql-server:5.2.1
    hostname: ksql-cli
    depends_on:
      - kafka-1
      - kafka-2
      - kafka-3
    environment:
      KSQL_BOOTSTRAP_SERVERS: kafka-1:9092
      KSQL_LISTENERS: http://0.0.0.0:8088