version: "3.5"

services:
  schema-registry:
    image: confluentinc/cp-schema-registry:latest
    hostname: schema-registry
    depends_on:
      - kafka1
      - kafka2
      - kafka3
    ports:
      - "8081:8081"
    environment:
      SCHEMA_REGISTRY_HOST_NAME: schema-registry
      SCHEMA_REGISTRY_LISTENERS: http://schema-registry:8081
      SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS: PLAINTEXT://kafka1:19092,PLAINTEXT://kafka2:19093,PLAINTEXT://kafka3:19094
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: CONTROLLER:PLAINTEXT,BROKER:PLAINTEXT,EXTERNAL:PLAINTEXT
      SCHEMA_REGISTRY_DEBUG: "true"

  kafka1:
    image: confluentinc/cp-kafka:latest
    hostname: kafka1
    container_name: kafka1
    ports:
      - "39092:39092"
    environment:
      KAFKA_LISTENERS: BROKER://kafka1:19092,EXTERNAL://kafka1:39092,CONTROLLER://kafka1:9093
      KAFKA_ADVERTISED_LISTENERS: BROKER://kafka1:19092,EXTERNAL://kafka1:39092
      KAFKA_INTER_BROKER_LISTENER_NAME: BROKER
      KAFKA_CONTROLLER_LISTENER_NAMES: CONTROLLER
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: CONTROLLER:PLAINTEXT,BROKER:PLAINTEXT,EXTERNAL:PLAINTEXT
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      KAFKA_PROCESS_ROLES: "controller,broker"
      KAFKA_NODE_ID: 1
      KAFKA_CONTROLLER_QUORUM_VOTERS: "1@kafka1:9093,2@kafka2:9093,3@kafka3:9093"
      KAFKA_METADATA_LOG_SEGMENT_MS: 15000
      KAFKA_METADATA_MAX_RETENTION_MS: 1200000
      KAFKA_METADATA_LOG_MAX_RECORD_BYTES_BETWEEN_SNAPSHOTS: 2800
      KAFKA_LOG_DIRS: "/tmp/kraft-combined-logs"
      CLUSTER_ID: "mycluster"
    volumes:
      - kafka1-data:/var/lib/kafka/data

  kafka2:
    image: confluentinc/cp-kafka:latest
    hostname: kafka2
    container_name: kafka2
    ports:
      - "39093:39093"
    environment:
      KAFKA_LISTENERS: BROKER://kafka2:19093,EXTERNAL://kafka2:39093,CONTROLLER://kafka2:9093
      KAFKA_ADVERTISED_LISTENERS: BROKER://kafka2:19093,EXTERNAL://kafka2:39093
      KAFKA_INTER_BROKER_LISTENER_NAME: BROKER
      KAFKA_CONTROLLER_LISTENER_NAMES: CONTROLLER
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: CONTROLLER:PLAINTEXT,BROKER:PLAINTEXT,EXTERNAL:PLAINTEXT
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      KAFKA_PROCESS_ROLES: "controller,broker"
      KAFKA_NODE_ID: 2
      KAFKA_CONTROLLER_QUORUM_VOTERS: "1@kafka1:9093,2@kafka2:9093,3@kafka3:9093"
      KAFKA_METADATA_LOG_SEGMENT_MS: 15000
      KAFKA_METADATA_MAX_RETENTION_MS: 1200000
      KAFKA_METADATA_LOG_MAX_RECORD_BYTES_BETWEEN_SNAPSHOTS: 2800
      KAFKA_LOG_DIRS: "/tmp/kraft-combined-logs"
      CLUSTER_ID: "mycluster"
    volumes:
      - kafka2-data:/var/lib/kafka/data

  kafka3:
    image: confluentinc/cp-kafka:latest
    hostname: kafka3
    container_name: kafka3
    ports:
      - "39094:39094"
    environment:
      KAFKA_LISTENERS: BROKER://kafka3:19094,EXTERNAL://kafka3:39094,CONTROLLER://kafka3:9093
      KAFKA_ADVERTISED_LISTENERS: BROKER://kafka3:19094,EXTERNAL://kafka3:39094
      KAFKA_INTER_BROKER_LISTENER_NAME: BROKER
      KAFKA_CONTROLLER_LISTENER_NAMES: CONTROLLER
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: CONTROLLER:PLAINTEXT,BROKER:PLAINTEXT,EXTERNAL:PLAINTEXT
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      KAFKA_PROCESS_ROLES: "controller,broker"
      KAFKA_NODE_ID: 3
      KAFKA_CONTROLLER_QUORUM_VOTERS: "1@kafka1:9093,2@kafka2:9093,3@kafka3:9093"
      KAFKA_METADATA_LOG_SEGMENT_MS: 15000
      KAFKA_METADATA_MAX_RETENTION_MS: 1200000
      KAFKA_METADATA_LOG_MAX_RECORD_BYTES_BETWEEN_SNAPSHOTS: 2800
      KAFKA_LOG_DIRS: "/tmp/kraft-combined-logs"
      CLUSTER_ID: "mycluster"
    volumes:
      - kafka3-data:/var/lib/kafka/data

volumes:
  kafka1-data:
  kafka2-data:
  kafka3-data: