Docker 实战系列 - Redis集群

落日映苍穹つ 2023-07-03 07:23 2阅读 0赞

## 前言 ##

[Docker方式部署redis-cluster - 简书][Docker_redis-cluster -]

[SpringBoot 2.0 如何使用Redis-Cluster - 掘金][SpringBoot 2.0 _Redis-Cluster -]

## Redis容器初始化 ##

这里引用了别人的一个镜像publicisworldwide/redis-cluster，方便快捷。  
这里使用host(主机)网络模式，把redis数据挂载到本机目录/data/redis/500\*下。

创建一个 docker-compose.yml

version: '3'
    
    services:
     redis1:
      image: publicisworldwide/redis-cluster
      network_mode: host
      restart: always
      ports:
        - '5001:5001'
      volumes:
       - /data/redis/5001/data:/data
      environment:
       - REDIS_PORT=5001
    
     redis2:
      image: publicisworldwide/redis-cluster
      network_mode: host
      restart: always
      ports:
        - '5002:5002'
      volumes:
       - /data/redis/5002/data:/data
      environment:
       - REDIS_PORT=5002
    
     redis3:
      image: publicisworldwide/redis-cluster
      network_mode: host
      restart: always
      ports:
        - '5003:5003'
      volumes:
       - /data/redis/5003/data:/data
      environment:
       - REDIS_PORT=5003
    
     redis4:
      image: publicisworldwide/redis-cluster
      network_mode: host
      restart: always
      ports:
        - '5004:5004'
      volumes:
       - /data/redis/5004/data:/data
      environment:
       - REDIS_PORT=5004
    
     redis5:
      image: publicisworldwide/redis-cluster
      network_mode: host
      restart: always
      ports:
        - '5005:5005'
      volumes:
       - /data/redis/5005/data:/data
      environment:
       - REDIS_PORT=5005
    
     redis6:
      image: publicisworldwide/redis-cluster
      network_mode: host
      restart: always
      ports:
        - '5006:5006'
      volumes:
       - /data/redis/5006/data:/data
      environment:
       - REDIS_PORT=5006

## Redis容器集群配置 ##

上面只是启动了6个redis容器，并没有设置集群，通过下面的命令可以设置集群。

172.19.165.222 这个是你本机的IP

`—replicas 1 参数表示为每个主节点创建一个从节点`

docker run --rm -it inem0o/redis-trib create --replicas 1 172.19.165.222:5001 172.19.165.222:5002 172.19.165.222:5003 172.19.165.222:5004 172.19.165.222:5005 172.19.165.222:5006

## 测试集群状态 ##

docker run -it 任意一个redis容器ID bash
    redis-cli -c -p 5003
    set a 123
    get a

暂停掉一个节点，测试

docker pause 任意一个节点
    # 进入redis命令行
    /usr/redis/src/redis-cli -c
    # 查看集群
    cluster nodes

[Docker_redis-cluster -]: https://www.jianshu.com/p/b7dea62bcd8b
[SpringBoot 2.0 _Redis-Cluster -]: https://juejin.im/post/5b66ad825188251af1220a57