使用Docker-Compose搭建Redis集群

以你之姓@ 2023-10-04 21:30 37阅读 0赞

## **1. 集群配置** ##

*  3主+3从

*  由于仅用于测试，故我这里只用1台服务器进行模拟

redis列表

![b5166a49a9124d03ab2ef90e1bfe5bb2.png][]

## **2.编写redis.conf** ##

在server上创建一个目录用于存放redis集群部署文件。这里我放的路径为/root/redis-cluster

在/opt/docker/redis-cluster目录下创建redis-1,redis-2,redis-3,redis-4,redis-5,redis-6文件夹

mkdir -p /opt/docker/redis-cluster/{redis-1,redis-2,redis-3,redis-4,redis-5,redis-6}
     
    #创建持久化目录
    mkdir -p /opt/docker/redis-cluster/redis-1/data
    mkdir -p /opt/docker/redis-cluster/redis-2/data
    mkdir -p /opt/docker/redis-cluster/redis-3/data
    mkdir -p /opt/docker/redis-cluster/redis-4/data
    mkdir -p /opt/docker/redis-cluster/redis-5/data
    mkdir -p /opt/docker/redis-cluster/redis-6/data

## **3. 在每个redis-\*文件夹下创建redis.conf文件，并写入如下内容:** ##

cluster-enabled yes # 开启集群
    cluster-config-file nodes.conf # 集群配置文件
    cluster-node-timeout 5000 # 集群节点多少时间未响应视为该节点丢失
    appendonly yes
    port 6379 # redis监听端口
    masterauth passwd123  #设置master节点密码
    requirepass passwd123 #设置密码

注意：port值不能都为6379，根据上面redis列表设置的端口号，依次给redis-1 ~ redis-6设置6379~6384端口号

## **4.编写docker-compose.yml文件** ##

这里直接使用daocloud提供的redis镜像地址daocloud.io/library/redis:6.0.4

在/root/redis-cluster文件夹下创建docker-compose.yml文件。

docker-compose.yml文件内容如下：

version: '3.1'
    services:
      # redis1配置
      redis1:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis-1
        restart: always
        network_mode: "host"
        volumes:
          - /opt/docker/redis-cluster/redis-1/data:/data
          - /opt/docker/redis-cluster/redis-1/redis.conf:/usr/local/etc/redis/redis.conf
        command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
      # redis2配置
      redis2:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis-2
        restart: always
        network_mode: "host"
        volumes:
          - /opt/docker/redis-cluster/redis-2/data:/data
          - /opt/docker/redis-cluster/redis-2/redis.conf:/usr/local/etc/redis/redis.conf
        command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
      # redis3配置
      redis3:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis-3
        restart: always
        network_mode: "host"
        volumes:
          - /opt/docker/redis-cluster/redis-3/data:/data
          - /opt/docker/redis-cluster/redis-3/redis.conf:/usr/local/etc/redis/redis.conf
        command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
      # redis4配置
      redis4:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis-4
        restart: always
        network_mode: "host"
        volumes:
          - /opt/docker/redis-cluster/redis-4/data:/data
          - /opt/docker/redis-cluster/redis-4/redis.conf:/usr/local/etc/redis/redis.conf
        command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
      # redis5配置
      redis5:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis-5
        restart: always
        network_mode: "host"
        volumes:
          - /opt/docker/redis-cluster/redis-5/data:/data
          - /opt/docker/redis-cluster/redis-5/redis.conf:/usr/local/etc/redis/redis.conf
        command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
      # redis6配置
      redis6:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis-6
        restart: always
        network_mode: "host"
        volumes:
          - /opt/docker/redis-cluster/redis-6/data:/data
          - /opt/docker/redis-cluster/redis-6/redis.conf:/usr/local/etc/redis/redis.conf
        command: ["redis-server", "/usr/local/etc/redis/redis.conf"]

启动容器,执行命令:

#启动容器
    docker-compose -f xxx.yaml up -d

![1bd6a1d474294e4e91f61661bd4d789f.png][]

## **5.开启集群** ##

随便找一个容器进入，这里我选择redis-1进入。 在进入容器后，输入如下命令开启集群:

redis-cli --cluster create 192.168.66.180:6379 \
    192.168.66.180:6380 \
    192.168.66.180:6381 \
    192.168.66.180:6382 \
    192.168.66.180:6383 \
    192.168.66.180:6384 \
    --cluster-replicas 1

![9b0eba5c24194cb8825c269dd2274513.png][]

出现下图即为成功。

![18855ad08bbf48eda1f86d1169564d2c.png][]

## 6.**测试** ##

使用redis-cli命令，连接集群中任意节点。（随便找一台能ping通集群所在IP的电脑，这里我用的本机进行测试）

### 6.1 查看节点属性 ###

redis-cli -c -h 192.168.66.180 -p 6379
     
    192.168.66.180:6379> cluster info

显示为如下图，即为集群健康状态

![cc3e9e06c5a843d88b956617ebcddd54.png][]

### 6.2 查看节点信息 ###

cluster nodes

![0b0ce1942baf4300ad76030feaa830d9.png][]

注意看图中的slave,master,myself等关键字。

![20038a6657ff4f27ac09b04f8d35e9b4.png][]

### 6.3 插入一个值 ###

192.168.66.180:6379> set test 'hello world'
    -> Redirected to slot [6918] located at 192.168.66.180:6380
    OK
    192.168.66.180:6380>

![19c2241ebe184a5a981be7ec5d06e6f2.png][]

注意：这里根据切片自动切换到了该数据分片所在的节点上，所以下面可以看到连接的节点变为了192.168.1.4:6380

get test

168.66.180:6379> set test 'hello world'
    -> Redirected to slot [6918] located at 192.168.66.180:6380
    OK
    192.168.66.180:6380> get test
    "hello world"
    192.168.66.180:6380>

这里因为就是在该数据所在分片上进行的查询，所以连接节点没有改变。

## 7.**添加密码**： ##

### 7.1 编辑redis.conf文件 ###

#为redis.conf文件添加如下配置。这里设置密码为123456
    masterauth 123456
    requirepass 123456

### 7.2 编辑docker-compose.yml文件 ###

#为docker-compose.yml中每个容器添加如下配置:
    environment:
      - REDISCLI_AUTH=123456

### 7.3 连接集群 ###

redis-cli -c -h 192.168.66.180 -p 6379 -a 123456

[b5166a49a9124d03ab2ef90e1bfe5bb2.png]: https://img-blog.csdnimg.cn/img_convert/b5166a49a9124d03ab2ef90e1bfe5bb2.png
[1bd6a1d474294e4e91f61661bd4d789f.png]: https://img-blog.csdnimg.cn/img_convert/1bd6a1d474294e4e91f61661bd4d789f.png
[9b0eba5c24194cb8825c269dd2274513.png]: https://img-blog.csdnimg.cn/img_convert/9b0eba5c24194cb8825c269dd2274513.png
[18855ad08bbf48eda1f86d1169564d2c.png]: https://img-blog.csdnimg.cn/img_convert/18855ad08bbf48eda1f86d1169564d2c.png
[cc3e9e06c5a843d88b956617ebcddd54.png]: https://img-blog.csdnimg.cn/img_convert/cc3e9e06c5a843d88b956617ebcddd54.png
[0b0ce1942baf4300ad76030feaa830d9.png]: https://img-blog.csdnimg.cn/img_convert/0b0ce1942baf4300ad76030feaa830d9.png
[20038a6657ff4f27ac09b04f8d35e9b4.png]: https://img-blog.csdnimg.cn/img_convert/20038a6657ff4f27ac09b04f8d35e9b4.png
[19c2241ebe184a5a981be7ec5d06e6f2.png]: https://img-blog.csdnimg.cn/img_convert/19c2241ebe184a5a981be7ec5d06e6f2.png