version: '3.8'

services:
  zookeeper:
    image: confluentinc/cp-zookeeper:latest
    container_name: zookeeper
    restart: unless-stopped
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000
    networks:
      - kafka_network

  kafka:
    image: confluentinc/cp-kafka:latest
    container_name: kafka
    restart: unless-stopped
    depends_on:
      - zookeeper
    networks:
      - kafka_network
      - proxy
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: "zookeeper:2181"
      KAFKA_HOSTNAME: "kafka.luke-else.co.uk"
      KAFKA_LISTENERS: "INTERNAL://kafka:9092,EXTERNAL://0.0.0.0:9093"
      KAFKA_ADVERTISED_LISTENERS: "INTERNAL://kafka:9092,EXTERNAL://kafka.luke-else.co.uk:9093"
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: "INTERNAL:PLAINTEXT,EXTERNAL:PLAINTEXT"
      KAFKA_INTER_BROKER_LISTENER_NAME: "INTERNAL"
      KAFKA_AUTO_CREATE_TOPICS_ENABLE: "true"
    labels:
      - "traefik.enable=true"
      - "traefik.tcp.routers.kafka.rule=HostSNI(`*`)"
      - "traefik.tcp.routers.kafka.entrypoints=kafka"
      - "traefik.tcp.services.kafka.loadbalancer.server.port=9093"

networks:
  kafka_network:
    driver: bridge
  proxy:
    external: true