由于数据量过大，单个Master复制集难以承担，因此需要对多个复制集进行集群，形成水平扩展每个复制集只负责存储整个数据集的一部分，这就是Redis的集群，其作用是提供在多个Redis节点间共享数据的程序集。
官网介绍地址
redis集群(cluster)笔记
跨主机部署redis
安装文件下载链接（或者按照下面的步骤自己创建）
链接：https://pan.baidu.com/s/1tLgLYWkawTvU17yvU1M_5A?pwd=xp9p
| 主机 | IP |
|---|---|
| node1 | 192.168.56.100 |
| node2 | 192.168.56.101 |
| node3 | 192.168.56.102 |
在node1 开放防火墙：
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.56.101" accept"
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.56.102" accept"
firewall-cmd --reload
firewall-cmd --list-all
在node2 开放防火墙：
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.56.100" accept"
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.56.102" accept"firewall-cmd --reload
firewall-cmd --list-all
在node3 开放防火墙：
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.56.101" accept"
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.56.100" accept"firewall-cmd --reload
firewall-cmd --list-all
1. 在3台主机上配置swarm
- 创建 /home/redis
mkdir -p /home/redis && cd /home/redis
-
3台机器分别将redis.zip拷贝到 /home/redis
-
在node1上执行：
docker swarm init --advertise-addr 192.168.56.100
docker swarm join-token manager
返回类似以下内容：
docker swarm join --token SWMTKN-1-614xi9dvksycykobgifxb4pgopc1wwgczwqct5wqkq8zao6tmx-0ds4jj3ozclrr2wukcaoakxso 192.168.56.100:2377
- 在node2、node3上执行上面的返回结果：
docker swarm join --token SWMTKN-1-2c2xopn2rld8oltcof24sue370681ijhbo3bwcqarjlhq9lkea-2g53o5qn2anre4j9puv4hecrn 192.168.0.101:2377
2. 创建swarm网络
在node1上执行以下命令：
docker network create --subnet=10.0.1.0/24 -d overlay --attachable pxc_swarm
3.文件目录如下
├─node1
│ ├─conf
│ ├─redis1
│ │ └─data
│ └─redis2
│ └─data
├─node2
│ ├─conf
│ ├─redis1
│ │ └─data
│ └─redis2
│ └─data
└─node3├─conf├─redis1│ └─data└─redis2└─data
4.文件介绍
4.1 所有conf文件夹里面有一个redis.conf
port 6379
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
4.2 所有node下面的目录有一个docker-compose.yml
node1 docker-compose.yml
version: '3'networks:pxc_swarm:external: true services:redis1:image: redis:6.0-alpinehostname: redis1container_name: redis1volumes:- "/home/redis/redis1/data:/data"- "/home/redis/conf/redis.conf:/etc/redis.conf"command: redis-server /etc/redis.conf restart: alwaysprivileged: truenetworks:pxc_swarm:ipv4_address: 10.0.1.10redis2:image: redis:6.0-alpinehostname: redis2container_name: redis2volumes:- "/home/redis/redis2/data:/data"- "/home/redis/conf/redis.conf:/etc/redis.conf"command: redis-server /etc/redis.conf restart: alwaysprivileged: truenetworks:pxc_swarm:ipv4_address: 10.0.1.11node2 docker-compose.yml
version: '3'networks:pxc_swarm:external: true services:redis1:image: redis:6.0-alpinehostname: redis1container_name: redis1volumes:- "/home/redis/redis1/data:/data"- "/home/redis/conf/redis.conf:/etc/redis.conf"command: redis-server /etc/redis.conf restart: alwaysprivileged: truenetworks:pxc_swarm:ipv4_address: 10.0.1.20redis2:image: redis:6.0-alpinehostname: redis2container_name: redis2volumes:- "/home/redis/redis2/data:/data"- "/home/redis/conf/redis.conf:/etc/redis.conf"command: redis-server /etc/redis.conf command: redis-server /etc/redis.conf restart: alwaysprivileged: truenetworks:pxc_swarm:ipv4_address: 10.0.1.21node3 docker-compose.yml
version: '3'networks:pxc_swarm:external: true services:redis1:image: redis:6.0-alpinehostname: redis1container_name: redis1volumes:- "/home/redis/redis1/data:/data"- "/home/redis/conf/redis.conf:/etc/redis.conf"command: redis-server /etc/redis.conf restart: alwaysprivileged: truenetworks:pxc_swarm:ipv4_address: 10.0.1.30redis2:image: redis:6.0-alpinehostname: redis2container_name: redis2volumes:- "/home/redis/redis2/data:/data"- "/home/redis/conf/redis.conf:/etc/redis.conf"command: redis-server /etc/redis.conf command: redis-server /etc/redis.conf restart: alwaysprivileged: truenetworks:pxc_swarm:ipv4_address: 10.0.1.314.3 其余的是目录
5.node1执行
rm -rf /home/redis/node2
rm -rf /home/redis/node3
cd /home/redis/node1 && docker-compose up -d
6.node2执行
rm -rf /home/redis/node1
rm -rf /home/redis/node3
docker run --rm redis:6.0-alpine redis-cli -v
cd /home/redis/node2 && docker-compose up -d
7.node3执行
rm -rf /home/redis/node1
rm -rf /home/redis/node2
docker run --rm redis:6.0-alpine redis-cli -v
cd /home/redis/node3 && docker-compose up -d
8.加入集群
docker exec -it redis1 /bin/sh
redis-cli --cluster create 10.0.1.10:6379 10.0.1.20:6379 10.0.1.11:6379 10.0.1.30:6379 10.0.1.21:6379 10.0.1.31:6379 --cluster-replicas 1
M: 1ff0c227fff72b893e8c7514a7d8f49183f0a397 10.0.1.10:6379slots:[0-5460] (5461 slots) master
M: 5242fb87c0c7f0179d32727b6043cc546ec1a731 10.0.1.20:6379slots:[5461-10922] (5462 slots) master
M: 7daa8da3450adc53ac88eda3a3c1a8f2c1976c02 10.0.1.11:6379slots:[10923-16383] (5461 slots) master
S: 962e2b4516cb7186f407d6ffc3a91b62603e0a09 10.0.1.30:6379replicates 7daa8da3450adc53ac88eda3a3c1a8f2c1976c02
S: 04fff0c1488896bef11aa508edbbf5ac6c29815b 10.0.1.21:6379replicates 1ff0c227fff72b893e8c7514a7d8f49183f0a397
S: 2e43a4d7b46b20e60220b4f495d8370b07c717bd 10.0.1.31:6379replicates 5242fb87c0c7f0179d32727b6043cc546ec1a73110 21
20 31
11 30
所有主从不允许在同一台机器上
7.常用命令
# 查看节点
cluster nodes
