如何基于Confluent官方镜像编写多Broker Kafka集群的docker-compose.yml配置

我此前需要基于Confluent官方Docker镜像、使用docker-compose部署多Broker的Confluent Kafka集群。尽管Confluent官方文档十分完善，但仅提供了单Broker版本的docker-compose.yml示例，并未给出可参考配置模式、方便扩展到任意节点数的三Broker示例，因此我自行整理了三节点版本的配置。

不巧之前整理的配置不慎丢失，今日我重新手动完成了配置。由于网络上相关参考资料较少，因此我将配置分享在这里，供其他有需要的开发者参考。

以下是我基于官方原版单Broker配置调整后的版本，主要改动如下：

• 新增了名为verilabs的静态网络
• 移除了两个不必要的服务以及收费的control-center服务

后续我会提供完整的三Broker版本配置，当前调整后的基础单节点配置如下：

---
version: '3'

# Single broker version.

networks:
  verilabs:
    name: verilabs
    external: false
    driver: bridge
    ipam:
     config:
       - subnet: 192.168.10.0/24
         gateway: 192.168.10.1

services:
  zookeeper:
    image: confluentinc/cp-zookeeper:6.2.0
    hostname: zookeeper
    container_name: zookeeper
    privileged: true
    ports:
      - "2181:2181"
    networks:
      verilabs:
        ipv4_address: 192.168.10.20
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000

  broker:
    image: confluentinc/cp-kafka:6.2.0
    hostname: broker
    container_name: broker
    privileged: true
    depends_on:
      - zookeeper
    ports:
      - "29092:29092"
      - "9092:9092"
      - "9101:9101"
    networks:
      verilabs:
        ipv4_address: 192.168.10.21
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: 'zookeeper:2181'
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://broker:29092,PLAINTEXT_HOST://localhost:9092
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      KAFKA_JMX_PORT: 9101
      KAFKA_JMX_HOSTNAME: localhost

  schema-registry:
    image: confluentinc/cp-schema-registry:6.2.0
    hostname: schema-registry
    container_name: schema-registry
    privileged: true
    depends_on:
      - broker
    ports:
      - "8081:8081"
    networks:
      verilabs:
        ipv4_address: 192.168.10.22
    environment:
      SCHEMA_REGISTRY_HOST_NAME: schema-registry
      SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS: 'broker:29092'
      SCHEMA_REGISTRY_LISTENERS: http://0.0.0.0:8081

  connect:
    image: cnfldemos/kafka-connect-datagen:0.5.0-6.2.0
    hostname: connect
    container_name: connect
    privileged: true
    depends_on:
      - broker
      - schema-registry
    ports:
      - "8083:8083"
    networks:
      verilabs:
        ipv4_address: 192.168.10.23
    environment:
      CONNECT_BOOTSTRAP_SERVERS: 'broker:29092'
      CONNECT_REST_ADVERTISED_HOST_NAME: connect
      CONNECT_REST_PORT: 8083
      CONNECT_GROUP_ID: compose-connect-group
      CONNECT_CONFIG_STORAGE_TOPIC: docker-connect-configs
      CONNECT_CONFIG_STORAGE_REPLICATION_FACTOR: 1
      CONNECT_OFFSET_FLUSH_INTERVAL_MS: 10000
      CONNECT_OFFSET_STORAGE_TOPIC: docker-connect-offsets
      CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR: 1
      CONNECT_STATUS_STORAGE_TOPIC: docker-connect-status
      CONNECT_STATUS_STORAGE_REPLICATION_FACTOR: 1
      CONNECT_KEY_CONVERTER: org.apache.kafka.connect.storage.StringConverter
      CONNECT_VALUE_CONVERTER: io.confluent.connect.avro.AvroConverter
      CONNECT_VALUE_CONVERTER_SCHEMA_REGISTRY_URL: http://schema-registry:8081
      CONNECT_PLUGIN_PATH: "/usr/share/java,/usr/share/confluent-hub-components"
      CONNECT_LOG4J_LOGGERS: org.apache.zookeeper=ERROR,org.I0Itec.zkclient=ERROR,org.reflections=ERROR

  ksqldb-server:
    image: confluentinc/cp-ksqldb-server:6.2.0
    hostname: ksqldb-server
    container_name: ksqldb-server
    privileged: true
    depends_on:
      - broker
      - connect
    ports:
      - "8088:8088"
    networks:
      verilabs:
        ipv4_address: 192.168.10.24
    environment:
      KSQL_CONFIG_DIR: "/etc/ksql"
      KSQL_BOOTSTRAP_SERVERS: "broker:29092"
      KSQL_HOST_NAME: ksqldb-server
      KSQL_LISTENERS: "http://0.0.0.0:8088"
      KSQL_CACHE_MAX_BYTES_BUFFERING: 0
      KSQL_KSQL_SCHEMA_REGISTRY_URL: "http://schema-registry:8081"
      KSQL_PRODUCER_INTERCEPTOR_CLASSES: "io.confluent.monitoring.clients.interceptor.MonitoringProducerInterceptor"
      KSQL_CONSUMER_INTERCEPTOR_CLASSES: "io.confluent.monitoring.clients.interceptor.MonitoringConsumerInterceptor"
      KSQL_KSQL_CONNECT_URL: "http://connect:8083"
      KSQL_KSQL_LOGGING_PROCESSING_TOPIC_REPLICATION_FACTOR: 1
      KSQL_KSQL_LOGGING_PROCESSING_TOPIC_AUTO_CREATE: 'true'
      KSQL_KSQL_LOGGING_PROCESSING_STREAM_AUTO_CREATE: 'true'

  rest-proxy:
    image: confluentinc/cp-kafka-rest:6.2.0
    depends_on:
      - broker
      - schema-registry
    ports:
      - 8082:8082
    networks:
      verilabs:
        ipv4_address: 192.168.10.25
    hostname: rest-proxy
    container_name: rest-proxy
    privileged: true
    environment:
      KAFKA_REST_HOST_NAME: rest-proxy
      KAFKA_REST_BOOTSTRAP_SERVERS: 'broker:29092'
      KAFKA_REST_LISTENERS: "http://0.0.0.0:8082"
      KAFKA_REST_SCHEMA_REGISTRY_URL: 'http://schema-registry:8081'

内容的提问来源于stack exchange，提问作者nmvega