1. 准备目录

mkdir rs01/data
mkdir rs02/data
mkdir rs03/data
mkdir rs04/data
mkdir rs05/data
mkdir rs06/data

2. 准备端口配置
   rs01: 6379
   rs02: 6380
   rs03: 6381
   rs04: 6382
   rs05: 6383
   rs06: 6384

3. 准备redis.conf , 例如 rs01的. 192.168.1.8 为宿主机器的ip，因在一台机器上，所以设置一样即可。根据实际情况配置

# 服务的对外访问端口
port 6379
# 访问密码
requirepass 123456
# 集群中节点连接时，密码
masterauth 123456
appendonly yes
# 将bind注释掉，不然后面执行会报 节点不是cluster的错误
# [ERR] Node 192.168.1.105:7003 is not configured as a cluster node.
#bind 127.0.0.1 -::1
# 开启集群功能
cluster-enabled yes
# 集群配置文件
cluster-config-file nodes.conf
# 节点心跳失败的超时时间
cluster-node-timeout 5000
# 集群对外访问ip.port
cluster-announce-ip 192.168.1.8
cluster-announce-port 6379
# 集群内部通信接口
cluster-announce-bus-port 16379
# 持久化目录存放位置
dir ./
# 绑定地址
bind 0.0.0.0
# 主从实例的IP地址
replica-announce-ip 192.168.1.8
# 保护模式,关闭则不会校验用户名密码的校验
protected-mode no
# redis后端运行,当为yes时，看不到日志，可以配置日志的输入文件
#daemonize yes
# 日志文件
#logfile /tmp/redis/run.log

3. 准备docker-compose.yml

version: '3.1'
services:
  redis-cluster:
    image: redis:latest
    # --cluster-replicas 1  表明每一个master会有一个从节点，形成了1个master:1个对应的从节点
    # 无需从节点： --cluster-replicas 0， 即全部为主节点
    command: redis-cli --cluster create 192.168.1.8:6379 192.168.1.8:6380 192.168.1.8:6381 192.168.1.8:6382 192.168.1.8:6383 192.168.1.8:6384 --cluster-replicas 1 --cluster-yes  -a 123456
    depends_on:
      - redis-1
      - redis-2
      - redis-3
      - redis-4
      - redis-5
      - redis-6
  # redis1配置
  redis-1:
    image: redis:latest
    container_name: redis-1
    restart: always
    ports:
      - 6379:6379
      - 16379:16379
    volumes:
      - ./rs01/data:/data
      - ./rs01/redis.conf:/usr/local/etc/redis/redis.conf
    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
    networks:
      rsnet:
        ipv4_address: 172.30.0.2
  # redis2配置
  redis-2:
    image: redis:latest
    container_name: redis-2
    restart: always
    ports:
      - 6380:6380
      - 16380:16380
    volumes:
      - ./rs02/data:/data
      - ./rs02/redis.conf:/usr/local/etc/redis/redis.conf
    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
    networks:
      rsnet:
        ipv4_address: 172.30.0.3
  # redis3配置
  redis-3:
    image: redis:latest
    container_name: redis-3
    restart: always
    ports:
      - 6381:6381
      - 16381:16381
    volumes:
      - ./rs03/data:/data
      - ./rs03/redis.conf:/usr/local/etc/redis/redis.conf
    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
    networks:
      rsnet:
        ipv4_address: 172.30.0.4
  # redis4配置
  redis-4:
    image: redis:latest
    container_name: redis-4
    restart: always
    ports:
      - 6382:6382
      - 16382:16382
    volumes:
      - ./rs04/data:/data
      - ./rs04/redis.conf:/usr/local/etc/redis/redis.conf
    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
    networks:
      rsnet:
        ipv4_address: 172.30.0.5
  # redis5配置
  redis-5:
    image: redis:latest
    container_name: redis-5
    restart: always
    ports:
      - 6383:6383
      - 16383:16383
    volumes:
      - ./rs05/data:/data
      - ./rs05/redis.conf:/usr/local/etc/redis/redis.conf
    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
    networks:
      rsnet:
        ipv4_address: 172.30.0.6
  # redis6配置
  redis-6:
    image: redis:latest
    container_name: redis-6
    restart: always
    ports:
      - 6384:6384
      - 16384:16384
    volumes:
      - ./rs06/data:/data
      - ./rs06/redis.conf:/usr/local/etc/redis/redis.conf
    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
    networks:
      rsnet:
        ipv4_address: 172.30.0.7

networks:
  rsnet:
    ipam:
      driver: default
      config:
        - subnet: "172.30.0.0/24"
          gateway: 172.30.0.1

4. 查看集群信息, 可以看到每一个后面都会有1 slaves,说明都有一个从节点

PS D:\docker\redis\redis-cluster> docker exec -it redis-1 redis-cli --cluster info 192.168.1.8:6379 -a 123456
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
192.168.1.8:6379 (af022877...) -> 0 keys | 5461 slots | 1 slaves.
192.168.1.8:6380 (599fdec5...) -> 0 keys | 5462 slots | 1 slaves.
192.168.1.8:6382 (8471802d...) -> 0 keys | 5461 slots | 1 slaves.
[OK] 0 keys in 3 masters.
0.00 keys per slot on average.

5. 测试主从切换 可以看到主节点 redis-2，则其从节点会升级到主节点，因没有其他节点可成为从节点，则会显示0 slaves

PS D:\docker\redis\redis-cluster> docker stop redis-2
redis-2
PS D:\docker\redis\redis-cluster> docker exec -it redis-1 redis-cli --cluster info 192.168.1.8:6379 -a 123456
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
Could not connect to Redis at 192.168.1.8:6380: Connection refused
192.168.1.8:6382 (8471802d...) -> 0 keys | 5461 slots | 1 slaves.
192.168.1.8:6383 (ada666d0...) -> 0 keys | 5461 slots | 1 slaves.
192.168.1.8:6384 (cf973988...) -> 0 keys | 5462 slots | 0 slaves.
[OK] 0 keys in 3 masters.
0.00 keys per slot on average.

6. 待续