docker-compose.yaml

---
version: '2'
services:
  zookeeper:
    image: confluentinc/cp-zookeeper:4.1.0
    ports:
      - "2181:2181"
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000
    extra_hosts:
      - "moby:127.0.0.1"

  kafka:
    image: confluentinc/cp-kafka:4.1.0
    ports:
      - "9092:9092"
    depends_on:
      - zookeeper
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9092
    volumes:
      - ./secrets:/etc/kafka/secrets
    extra_hosts:
      - "moby:127.0.0.1"

  ksql-server:
    image: "confluentinc/ksql-cli:5.0.0-beta1"
    ports:
      - '8088:8088'
    depends_on:
      - kafka
    # Note: The container's `run` script will perform the same readiness checks
    # for Kafka and Confluent Schema Registry, but that's ok because they complete fast.
    # The reason we check for readiness here is that we can insert a sleep time
    # for topic creation before we start the application.
    command: "bash -c 'echo Waiting for Kafka to be ready... && \
                       cub kafka-ready -b kafka:9092 1 20 && \
                       exec /usr/bin/ksql-server-start /etc/ksql/ksql-server.properties'"
    environment:
      KSQL_CONFIG_DIR: "/etc/ksql"
      KSQL_OPTS: "-Dbootstrap.servers=kafka:9092 -Dlisteners=http://0.0.0.0:8088"
      KSQL_LOG4J_OPTS: "-Dlog4j.configuration=file:/etc/ksql/log4j-rolling.properties"

    extra_hosts:
      - "moby:127.0.0.1"