周末花了两天时间入门学习一下 Kafka 的基本概念和使用。在学习Kafka之前，首先搭建Kafka需要的环境以便于之后的学习和项目准备。

docker和docker-compose的搭建和使用我就默认你都会了哈！如果不清楚的先了解一下...

集群搭建

废话不多说，上代码！

version: '3.1'
services:
  zookeeper1:
    image: zookeeper:3.4.13
    container_name: zookeeper1
    restart: always
    hostname: zookeeper1
    ports:
      - 2181:2181
    environment:
      ZOO_MY_ID: 1
      ZOO_SERVERS: server.1=zookeeper1:2888:3888 server.2=zookeeper2:2888:3888 server.3=zookeeper3:2888:3888
  zookeeper2:
    image: zookeeper:3.4.13
    container_name: zookeeper2
    restart: always
    hostname: zookeeper2
    ports:
      - 2182:2181
    environment:
      ZOO_MY_ID: 2
      ZOO_SERVERS: server.1=zookeeper1:2888:3888 server.2=zookeeper2:2888:3888 server.3=zookeeper3:2888:3888
  zookeeper3:
    image: zookeeper:3.4.13
    container_name: zookeeper3
    restart: always
    hostname: zookeeper3
    ports:
      - 2183:2181
    environment:
      ZOO_MY_ID: 3
      ZOO_SERVERS: server.1=zookeeper1:2888:3888 server.2=zookeeper2:2888:3888 server.3=zookeeper3:2888:3888
  kafka1:
    image: xuxiangwork/kafka
    container_name: kafka1
    ports:
      - "9092:9092"
      - "1099:1099"
    depends_on:
      - zookeeper1
      - zookeeper2
      - zookeeper3
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ADVERTISED_HOST_NAME: 172.28.0.1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper1:2181,zookeeper2:2182,zookeeper3:2183
      CUSTOM_JMX_PORT: "1099"
      JVM_XMS: "256M"
      JVM_XMX: "512M"
    volumes:
      - E:\kafka1:/kafka
    restart: always
  kafka2:
    image: xuxiangwork/kafka
    container_name: kafka2
    ports:
      - "9093:9092"
      - "1100:1100"
    depends_on:
      - zookeeper1
      - zookeeper2
      - zookeeper3
    environment:
      KAFKA_BROKER_ID: 2
      KAFKA_ADVERTISED_HOST_NAME: 172.28.0.2
      KAFKA_ZOOKEEPER_CONNECT: zookeeper1:2181,zookeeper2:2182,zookeeper3:2183
      CUSTOM_JMX_PORT: "1100"
      JVM_XMS: "256M"
      JVM_XMX: "512M"
    volumes:
      - E:\kafka2:/kafka
    restart: always
  kafka3:
    image: xuxiangwork/kafka
    container_name: kafka3
    ports:
      - "9094:9092"
      - "1101:1101"
    depends_on:
      - zookeeper1
      - zookeeper2
      - zookeeper3
    environment:
      KAFKA_BROKER_ID: 3
      KAFKA_ADVERTISED_HOST_NAME: 172.28.0.3
      KAFKA_ZOOKEEPER_CONNECT: zookeeper1:2181,zookeeper2:2182,zookeeper3:2183
      CUSTOM_JMX_PORT: "1101"
      JVM_XMS: "256M"
      JVM_XMX: "512M"
    volumes:
      - E:\kafka3:/kafka
    restart: always
  kafka-manager:
    container_name: kafka-manager
    image: xuxiangwork/kafka-manager
    ports:
      - "9000:9000"
    depends_on:
      - zookeeper1
      - zookeeper2
      - zookeeper3
    environment:
      ZK_HOSTS: zookeeper1:2181
      APPLICATION_SECRET: letmein
      KAFKA_MANAGER_AUTH_ENABLED: "true"
      KAFKA_MANAGER_USERNAME: 你的控制台帐号
      KAFKA_MANAGER_PASSWORD: 控制台密码
    restart: always

ps.本地环境为Window10的环境，所以文件映射的路径和linux上搭建不一样，如果搭建在Linux系统或MacOS系统，修改映射文件就可以啦。
值得注意的是，如果为了能够快速将zookeeper和kafka集群搭建起来，建议直接使用以上代码。因为现在使用最新的zookeeper版本好像会搭建失败，具体原因没有细看，看到网上的说法是有可能新版本zookeeper镜像里的文件和之前不太一样，可能需要修改一些配置才可以，但我的目的是快速搭建环境学习Kafka，就不花那么多时间研究版本的问题...

另外，我还加上kafka-manager服务，这个是一个可视化平台，可以方便的管理kafka节点的情况，访问地址为：http://localhost:9000 。至于如何操作管理平台，可参考 kafka-manager使用

使用docker ps命令查看是否搭建成功

查看zookeeper节点的状态：

1. 进入zookeeper服务：docker exec -it zookeeper1 /bin/bash
2. 执行 ./bin/zkServer.sh status

由Mode可知，zookeeper1角色是leader，可以依照相似的命令查看其它zookeeper的角色和判断是否启动成功！

查看kafka节点的状态：

1. 查看kafka启动日志：docker logs -f kafka1

2. 通过kafka-manager管理平台查看

   
   
   
   
   
   
   
   
   
   

如果觉得文章不错的话，麻烦点个赞哈！对于文章有哪里不清楚或者有误的地方，欢迎在评论区留言~