docker搭建zookeeper集群

docker搭建zookeeper集群

zookeeper版本

v3.8

创建zk集群目录

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mkdir zk-cluster

编写docker-compose.yml

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version: '3'

networks:
  zk-net:
    name: zk-net   # 网络名

services:
  zoo1:
    image: zookeeper:3.8
    container_name: zoo1   # 容器名称
    restart: always       # 开机自启
    hostname: zoo1        # 主机名
    ports:
      - 2181:2181         # 端口号
    environment:
    	# 当前zk实例的id
      ZOO_MY_ID: 1
      # 整个zk集群的机器端口列表（2181：对client端提供服务的端口，3888：选举leader使用，2888：集群内机器通讯使用（Leader监听此端口））
      ZOO_SERVERS: server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181
    networks:
      - zk-net

  zoo2:
    image: zookeeper:3.8
    container_name: zoo2
    restart: always
    hostname: zoo2
    ports:
      - 2182:2181
    environment:
      ZOO_MY_ID: 2
      ZOO_SERVERS: server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181
    networks:
      - zk-net

  zoo3:
    image: zookeeper:3.8
    container_name: zoo3
    restart: always
    hostname: zoo3
    ports:
      - 2183:2181
    environment:
      ZOO_MY_ID: 3
      ZOO_SERVERS: server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181
    networks:
      - zk-net

运行docker-compose

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docker-compose up -d

检查搭建状态

查看节点启动情况

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[root@ray-aliyun zk-cluster]# docker exec -it zoo1 /bin/bash
root@zoo1:/apache-zookeeper-3.8.3-bin# cd bin
root@zoo1:/apache-zookeeper-3.8.3-bin/bin#  ./zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: follower

[root@ray-aliyun zk-cluster]# docker exec -it zoo2 /bin/bash
root@zoo2:/apache-zookeeper-3.8.3-bin# cd bin
root@zoo2:/apache-zookeeper-3.8.3-bin/bin# ./zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: follower

[root@ray-aliyun zk-cluster]# docker exec -it zoo3 /bin/bash
root@zoo3:/apache-zookeeper-3.8.3-bin# cd bin
root@zoo3:/apache-zookeeper-3.8.3-bin/bin# ./zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: leader

zoo1、zoo2状态为follower，zoo3状态为leader。

搭建成功！