因机器限制，用两台主机部署一个三主三从的redis集群架构(记为1，2)

1号机部署步骤

• 新建redis目录

mkdir /mydata/redis 
cd /mydata/redis 

• 编写 redis-cluster.tmpl 文件

vim redis-cluster.tmpl

port ${PORT} #节点端口
requirepass xx#密码
masterauth xx#与上面相同
protected-mode no  #保护模式，默认值 yes，即开启。开启保护模式以后，需配置 bind ip 或者设置访问密码关闭保护模式，外部网络可以直接访问；
daemonize no #是否以守护线程的方式启动（后台启动），默认 no；
appendonly yes #是否开启 AOF 持久化模式，默认 no；
cluster-enabled yes #是否开启集群模式，默认 no；
cluster-config-file nodes.conf #集群节点信息文件；
cluster-node-timeout 15000 #集群节点连接超时时间；
cluster-announce-ip 47.100.97.4 #1号机器的公网ip
cluster-announce-port ${PORT} #集群节点映射端口；
cluster-announce-bus-port 1${PORT} #集群节点总线端口。

• 执行命令，创建目录

for port in `seq 6371 6373`; do \
  mkdir -p ${port}/conf \
  && PORT=${port} envsubst < redis-cluster.tmpl > ${port}/conf/redis.conf \
  && mkdir -p ${port}/data;\
done

• 应用tree查看文件结构(安装插件yum install -y tree)

[root@iZ8vb6m7o2mthc510ymisjZ redis]# tree
.
├── 6371
│   ├── conf
│   │   └── redis.conf
│   └── data
├── 6372
│   ├── conf
│   │   └── redis.conf
│   └── data
├── 6373
│   ├── conf
│   │   └── redis.conf
│   └── data
└── redis-cluster.tmpl

• 在/mydata/redis瞎新建文件docker-compose.yml

version: "3.8"

services:
  redis-6371: # 服务名称
    image: redis # 创建容器时所需的镜像
    container_name: redis-6371 # 容器名称
    restart: always # 容器总是重新启动
    network_mode: "host" # host 网络模式
    volumes: # 数据卷，目录挂载
      - /mydata/redis/6371/conf/redis.conf:/usr/local/etc/redis/redis.conf
      - /mydata/redis/6371/data:/data
    command: redis-server /usr/local/etc/redis/redis.conf # 覆盖容器启动后默认执行的命令

  redis-6372:
    image: redis
    container_name: redis-6372
    network_mode: "host"
    volumes:
    volumes: # 数据卷，目录挂载
      - /mydata/redis/6372/conf/redis.conf:/usr/local/etc/redis/redis.conf
      - /mydata/redis/6372/data:/data
    command: redis-server /usr/local/etc/redis/redis.conf

  redis-6373:
    image: redis
    container_name: redis-6373
    network_mode: "host"
    volumes:
    volumes: # 数据卷，目录挂载
      - /mydata/redis/6373/conf/redis.conf:/usr/local/etc/redis/redis.conf
      - /mydata/redis/6373/data:/data
    command: redis-server /usr/local/etc/redis/redis.conf

• 执行安装命令

docker-compose up -d

2号机部署步骤

• 目录层级与1号机想同

• redis-cluster.tmpl文件(主要是ip不同)

port ${PORT}
requirepass xx
masterauth xx ##与一号机相同
protected-mode no
daemonize no
appendonly yes
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 15000
cluster-announce-ip 39.99.156.91 # 二号机的公网ip
cluster-announce-port ${PORT}
cluster-announce-bus-port 1${PORT}

• docker-compose.yml文件(主要是端口不同)

version: "3.8"

services:
  redis-6374: # 服务名称
    image: redis # 创建容器时所需的镜像
    container_name: redis-6374 # 容器名称
    restart: always # 容器总是重新启动
    network_mode: "host" # host 网络模式
    volumes: # 数据卷，目录挂载
      - /mydata/redis/6374/conf/redis.conf:/usr/local/etc/redis/redis.conf
      - /mydata/redis/6374/data:/data
    command: redis-server /usr/local/etc/redis/redis.conf # 覆盖容器启动后默认执行的命令

  redis-6375:
    image: redis
    container_name: redis-6375
    network_mode: "host"
    volumes:
    volumes: # 数据卷，目录挂载
      - /mydata/redis/6375/conf/redis.conf:/usr/local/etc/redis/redis.conf
      - /mydata/redis/6375/data:/data
    command: redis-server /usr/local/etc/redis/redis.conf

  redis-6376:
    image: redis
    container_name: redis-6376
    network_mode: "host"
    volumes:
    volumes: # 数据卷，目录挂载
      - /mydata/redis/6376/conf/redis.conf:/usr/local/etc/redis/redis.conf
      - /mydata/redis/6376/data:/data
    command: redis-server /usr/local/etc/redis/redis.conf

2台主机都部署完成后选择1号机进入容器

docker exec -it redis-6371 bash

redis-cli -a xxx(这边是你上面设置的密码)  --cluster create 39.99.156.91:6371 39.99.156.91:6372 39.99.156.91:6373 47.100.97.46:6374 47.100.97.46:6375 47.100.97.46:6376 --cluster-replicas 1

创建成功后
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
>>> Performing hash slots allocation on 6 nodes...
Master[0] -> Slots 0 - 5460
Master[1] -> Slots 5461 - 10922
Master[2] -> Slots 10923 - 16383
Adding replica 47.100.97.46:6376 to 39.99.156.91:6371
Adding replica 39.99.156.91:6373 to 47.100.97.46:6374
Adding replica 47.100.97.46:6375 to 39.99.156.91:6372
M: a0df3ef56079f79cdb0114998a7649bb94119f28 39.99.156.91:6371
   slots:[0-5460] (5461 slots) master
M: f4200a0aa263639809a7af7bf89cc75a9c0645de 39.99.156.91:6372
   slots:[10923-16383] (5461 slots) master
S: 920af8d06e11536a8dd22162d091837b1d9f1077 39.99.156.91:6373
   replicates fe81cc42f39a49330c47523d5b4598c02526d95e
M: fe81cc42f39a49330c47523d5b4598c02526d95e 47.100.97.46:6374
   slots:[5461-10922] (5462 slots) master
S: 37483fa11fc93be2c1d0b5b259537a3aec357c80 47.100.97.46:6375
   replicates f4200a0aa263639809a7af7bf89cc75a9c0645de
S: c647cbcfc0f701b859b35978a430604decfe751d 47.100.97.46:6376
   replicates a0df3ef56079f79cdb0114998a7649bb94119f28
Can I set the above configuration? (type 'yes' to accept): yes
>>> Nodes configuration updated
>>> Assign a different config epoch to each node
>>> Sending CLUSTER MEET messages to join the cluster
Waiting for the cluster to join
.
>>> Performing Cluster Check (using node 39.99.156.91:6371)
M: a0df3ef56079f79cdb0114998a7649bb94119f28 39.99.156.91:6371
   slots:[0-5460] (5461 slots) master
   1 additional replica(s)
S: 920af8d06e11536a8dd22162d091837b1d9f1077 39.99.156.91:6373
   slots: (0 slots) slave
   replicates fe81cc42f39a49330c47523d5b4598c02526d95e
S: 37483fa11fc93be2c1d0b5b259537a3aec357c80 47.100.97.46:6375
   slots: (0 slots) slave
   replicates f4200a0aa263639809a7af7bf89cc75a9c0645de
M: fe81cc42f39a49330c47523d5b4598c02526d95e 47.100.97.46:6374
   slots:[5461-10922] (5462 slots) master
   1 additional replica(s)
M: f4200a0aa263639809a7af7bf89cc75a9c0645de 39.99.156.91:6372
   slots:[10923-16383] (5461 slots) master
   1 additional replica(s)
S: c647cbcfc0f701b859b35978a430604decfe751d 47.100.97.46:6376
   slots: (0 slots) slave
   replicates a0df3ef56079f79cdb0114998a7649bb94119f28
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.

• 测试

我们连接的是39.99.156.91:6372 这台机器，当操作写入时，他就变成了6374去了
redis-cluster(39.99.156.91:6372)>set name mrhelloworld
"OK"
redis-cluster(47.100.97.46:6374)>