Ubuntu 20.04下基于Docker搭建Redis-Cluster多节点集群求助

1. 准备目录结构 #

先创建集群所需的节点目录，每个节点单独存储配置和数据：

mkdir -p redis-cluster/{node1,node2,node3,node4,node5,node6}/data
mkdir -p redis-cluster/{node1,node2,node3,node4,node5,node6}/conf

2. 编写Redis集群配置文件 #

在redis-cluster/node1/conf/redis.conf中写入基础集群配置：

port 6379
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
protected-mode no

将配置复制到其他节点目录：

for i in {2..6}; do cp redis-cluster/node1/conf/redis.conf redis-cluster/node${i}/conf/; done

3. 编写Docker Compose部署文件 #

在redis-cluster目录下创建docker-compose.yml，定义6个Redis节点（3主3从是Redis集群的最小要求）：

version: '3.8'
services:
  redis-node1:
    image: redis:latest
    container_name: redis-node1
    ports:
      - "7000:6379"
      - "17000:16379"
    volumes:
      - ./node1/data:/data
      - ./node1/conf/redis.conf:/usr/local/etc/redis/redis.conf
    command: redis-server /usr/local/etc/redis/redis.conf
    networks:
      - redis-cluster-net

  redis-node2:
    image: redis:latest
    container_name: redis-node2
    ports:
      - "7001:6379"
      - "17001:16379"
    volumes:
      - ./node2/data:/data
      - ./node2/conf/redis.conf:/usr/local/etc/redis/redis.conf
    command: redis-server /usr/local/etc/redis/redis.conf
    networks:
      - redis-cluster-net

  redis-node3:
    image: redis:latest
    container_name: redis-node3
    ports:
      - "7002:6379"
      - "17002:16379"
    volumes:
      - ./node3/data:/data
      - ./node3/conf/redis.conf:/usr/local/etc/redis/redis.conf
    command: redis-server /usr/local/etc/redis/redis.conf
    networks:
      - redis-cluster-net

  redis-node4:
    image: redis:latest
    container_name: redis-node4
    ports:
      - "7003:6379"
      - "17003:16379"
    volumes:
      - ./node4/data:/data
      - ./node4/conf/redis.conf:/usr/local/etc/redis/redis.conf
    command: redis-server /usr/local/etc/redis/redis.conf
    networks:
      - redis-cluster-net

  redis-node5:
    image: redis:latest
    container_name: redis-node5
    ports:
      - "7004:6379"
      - "17004:16379"
    volumes:
      - ./node5/data:/data
      - ./node5/conf/redis.conf:/usr/local/etc/redis/redis.conf
    command: redis-server /usr/local/etc/redis/redis.conf
    networks:
      - redis-cluster-net

  redis-node6:
    image: redis:latest
    container_name: redis-node6
    ports:
      - "7005:6379"
      - "17005:16379"
    volumes:
      - ./node6/data:/data
      - ./node6/conf/redis.conf:/usr/local/etc/redis/redis.conf
    command: redis-server /usr/local/etc/redis/redis.conf
    networks:
      - redis-cluster-net

networks:
  redis-cluster-net:
    driver: bridge

4. 启动所有Redis节点 #

进入redis-cluster目录，执行启动命令：

docker-compose up -d

验证容器运行状态：

docker-compose ps

5. 初始化Redis Cluster #

进入任意一个Redis容器（以redis-node1为例），执行集群初始化命令：

docker exec -it redis-node1 redis-cli --cluster create \
redis-node1:6379 redis-node2:6379 redis-node3:6379 \
redis-node4:6379 redis-node5:6379 redis-node6:6379 \
--cluster-replicas 1

执行后输入yes确认集群分片配置。

6. 验证集群状态 #

进入任意节点的Redis客户端，查看集群信息：

docker exec -it redis-node1 redis-cli -c
127.0.0.1:6379> cluster info
127.0.0.1:6379> cluster nodes

内容的提问来源于stack exchange，提问作者syed adeeb