Docker 部署集群上一节的Redis部署集群还有些不太清楚的地方这里做补充说明这次我们用 docker 部署 11 个 redis 节点九个用于部署集群两个用于扩容练习集群的结构类似于如图由于 redis 部署集群时内部的随机性可能节点的静态 ip 所属的角色都不太一样无伤大雅Step 1创建目录和配置创建 redis-cluster 目录在目录内部创建docker-compose.yml和docker-compose.yml文件对应命令为mkdirredis-clustercdredis-clustervimdocker-compose.ymlvimdocker-compose.yml文件结构为redis-cluster/ ├── docker-compose.yml └── generate.shStep 2编写脚本脚本generate.sh里内容为forportin$(seq19);\do\mkdir-predis${port}/touchredis${port}/redis.confcatEOFredis${port}/redis.confport 6379 bind 0.0.0.0 protected-mode no appendonly yes cluster-enabled yes cluster-config-file nodes.conf cluster-node-timeout 5000 cluster-announce-ip 172.30.0.10${port}cluster-announce-port 6379 cluster-announce-bus-port 16379 EOFdone# 注意 cluster-announce-ip 的值有变化.forportin$(seq1011);\do\mkdir-predis${port}/touchredis${port}/redis.confcatEOFredis${port}/redis.confport 6379 bind 0.0.0.0 protected-mode no appendonly yes cluster-enabled yes cluster-config-file nodes.conf cluster-node-timeout 5000 cluster-announce-ip 172.30.0.1${port}cluster-announce-port 6379 cluster-announce-bus-port 16379 EOFdone保存后就能执行脚本啦这个脚本的意思是在当前目录redis-cluster中建立从 redis 1redis 11 的文件夹每个中都有对应节点的必要配置文件。⚠️注意如果你服务器上有其他的网段占用则需要修改当前脚本与后续的yml文件中的网段配置只要不冲突即可。shgenerate.sh执行完后如果没有任何反应那就是执行成功了我们可以看看Step 3配置 ymlok我们接着来配置docker-compose.yml文件内容有点长version:3.7networks: mynet: ipam: config: - subnet:172.30.0.0/24 services: redis1: image:redis:5.0.9container_name: redis1 version:3.7networks: mynet: ipam: config: - subnet:172.30.0.0/24 services: redis1: image:redis:5.0.9container_name: redis1 restart: always volumes: - ./redis1/:/etc/redis/ ports: -6371:6379 -16371:16379 command: redis-server /etc/redis/redis.conf networks: mynet: ipv4_address:172.30.0.101 redis2: image:redis:5.0.9container_name: redis2 restart: always volumes: - ./redis2/:/etc/redis/ ports: -6372:6379 -16372:16379 command: redis-server /etc/redis/redis.conf networks: mynet: ipv4_address:172.30.0.102 redis3: image:redis:5.0.9container_name: redis3 restart: always volumes: - ./redis3/:/etc/redis/ ports: -6373:6379 -16373:16379 command: redis-server /etc/redis/redis.conf networks: mynet: ipv4_address:172.30.0.103 redis4: image:redis:5.0.9container_name: redis4 restart: always volumes: - ./redis4/:/etc/redis/ ports: -6374:6379 -16374:16379 command: redis-server /etc/redis/redis.conf networks: mynet: ipv4_address:172.30.0.104 redis5: image:redis:5.0.9container_name: redis5 restart: always volumes: - ./redis5/:/etc/redis/ ports: -6375:6379 -16375:16379 command: redis-server /etc/redis/redis.conf networks: mynet: ipv4_address:172.30.0.105 redis6: image:redis:5.0.9container_name: redis6 restart: always volumes: - ./redis6/:/etc/redis/ ports: -6376:6379 -16376:16379 command: redis-server /etc/redis/redis.conf networks: mynet: ipv4_address:172.30.0.106 redis7: image:redis:5.0.9container_name: redis7 restart: always volumes: - ./redis7/:/etc/redis/ ports: -6377:6379 -16377:16379 command: redis-server /etc/redis/redis.conf networks: mynet: ipv4_address:172.30.0.107 redis8: image:redis:5.0.9container_name: redis8 restart: always volumes: - ./redis8/:/etc/redis/ ports: -6378:6379 -16378:16379 command: redis-server /etc/redis/redis.conf networks: mynet: ipv4_address:172.30.0.108 redis9: image:redis:5.0.9container_name: redis9 restart: always volumes: - ./redis9/:/etc/redis/ ports: -6379:6379 -16379:16379 command: redis-server /etc/redis/redis.conf networks: mynet: ipv4_address:172.30.0.109 redis10: image:redis:5.0.9container_name: redis10 restart: always volumes: - ./redis10/:/etc/redis/ ports: -6380:6379 -16380:16379 command: redis-server /etc/redis/redis.conf networks: mynet: ipv4_address:172.30.0.110 redis11: image:redis:5.0.9container_name: redis11 restart: always volumes: - ./redis11/:/etc/redis/ ports: -6381:6379 -16381:16379 command: redis-server /etc/redis/redis.conf networks: mynet: ipv4_address:172.30.0.111如果没问题就执行sudo docker-compose up -d启动容器并后台运行。Step 4配置集群还有一个步骤就是让各自的节点都能“认识对方”目前只是配置了各个节点的配置还没有配置他们之间的联系需要用到一行命令手动的将各个主机都连系起来。这个命令直接在 cluster 路径下直接执行即可无需进入 redis 服务。redis-cli--clustercreate172.30.0.101:6379172.30.0.102:6379172.30.0.103:6379172.30.0.104:6379172.30.0.105:6379172.30.0.106:6379172.30.0.107:6379172.30.0.108:6379172.30.0.109:6379 --cluster-replicas2执行后 redis 会默认帮你弄好集群的分片配置这里都描述了每个分片的 slot 数量主从节点的分配等…确认无误的话就能输入 yes 下一步真正配置咯到这里 redis 的分片集群就真正配置好了