docker下部署kafka集群(多个broker+多个zookeeper)

网上关于kafka集群的搭建，基本是单个broker和单个zookeeper，测试研究的意义不大。于是折腾了下，终于把正宗的Kafka集群搭建出来了，在折腾中遇到了很多坑，后续有时间再专门整理份搭建问题分析

docker-compose.yml配置文件

version: '2'
services:
    zoo1:
        image: zookeeper
        restart: always
        container_name: zoo1
        ports:
            - "2181:2181"
        environment:
            ZOO_MY_ID: 1
            ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888 server.4=zoo4:2888:3888:observer
    zoo2:
        image: zookeeper
        restart: always
        container_name: zoo2
        ports:
            - "2182:2181"
        environment:
            ZOO_MY_ID: 2
            ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888 server.4=zoo4:2888:3888:observer
    zoo3:
        image: zookeeper
        restart: always
        container_name: zoo3
        ports:
            - "2183:2181"
        environment:
            ZOO_MY_ID: 3
            ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888 server.4=zoo4:2888:3888:observer
    zoo4:
        image: zookeeper
        restart: always
        container_name: zoo4
        ports:
            - "2184:2181"
        environment:
            ZOO_MY_ID: 4
            PEER_TYPE: observer
            ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888 server.4=zoo4:2888:388:observer
    broker1:
        image: wurstmeister/kafka
        restart: always
        container_name: broker1
        ports:
          - "9091:9092"
        depends_on:
          - zoo1
          - zoo2
          - zoo3
          - zoo4
        environment:
          KAFKA_BROKER_ID: 1
          KAFKA_ADVERTISED_HOST_NAME: broker1
          KAFKA_ADVERTISED_PORT: 9092
          KAFKA_HOST_NAME: broker1
          KAFKA_ZOOKEEPER_CONNECT: zoo1:2181,zoo2:2181,zoo3:2181,zoo4:2181
          KAFKA_LISTENERS: PLAINTEXT://broker1:9092
          KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://broker1:9092
        volumes:
          - /var/run/docker.sock:/var/run/docker.sock
    broker2:
        image: wurstmeister/kafka
        restart: always
        container_name: broker2
        ports:
          - "9092:9092"
        depends_on:
          - zoo1
          - zoo2
          - zoo3
          - zoo4
        environment:
          KAFKA_BROKER_ID: 2
          KAFKA_ADVERTISED_HOST_NAME: broker2
          KAFKA_ADVERTISED_PORT: 9092
          KAFKA_HOST_NAME: broker2
          KAFKA_ZOOKEEPER_CONNECT: zoo1:2181,zoo2:2181,zoo3:2181,zoo4:2181
          KAFKA_LISTENERS: PLAINTEXT://broker2:9092
          KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://broker2:9092
        volumes:
          - /var/run/docker.sock:/var/run/docker.sock
    broker3:
        image: wurstmeister/kafka
        restart: always
        container_name: broker3
        ports:
          - "9093:9092"
        depends_on:
          - zoo1
          - zoo2
          - zoo3
          - zoo4
        environment:
          KAFKA_BROKER_ID: 3
          KAFKA_ADVERTISED_HOST_NAME: broker3
          KAFKA_ADVERTISED_PORT: 9092
          KAFKA_HOST_NAME: broker3
          KAFKA_ZOOKEEPER_CONNECT: zoo1:2181,zoo2:2181,zoo3:2181,zoo4:2181
          KAFKA_LISTENERS: PLAINTEXT://broker3:9092
          KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://broker3:9092
        volumes:
          - /var/run/docker.sock:/var/run/docker.sock

启动集群

COMPOSE_PROJECT_NAME=kafkatest docker-compose -f kafka.yml up -d

查看容器启动状态

 COMPOSE_PROJECT_NAME=kafkatest docker-compose -f kafka.yml ps

如果要在其他容器里直接使用kafka容器，可以将它们加入同一个network

创建network

docker network create nginx-proxy

在各自容器的docker-compose.yml加入network配置，如下

networks:
  default:
    external:
      name: nginx-proxy