搭建 Redis 集群

搭建 Redis 集群

vim docker-compose.yml

Redis Desktop Manager下载

https://www.jianshu.com/p/6895384d2b9e

version: '3.7' services: master: image: redis container_name: redis-master ports: - 6379:6379 slave1: image: redis container_name: redis-slave-1 ports: - 6380:6379 command: redis-server --slaveof redis-master 6379 slave2: image: redis container_name: redis-slave-2 ports: - 6381:6379 command: redis-server --slaveof redis-master 6379

搭建 Sentinel 集群

我们至少需要创建三个 Sentinel 服务，docker-compose.yml 配置如下：

version: '3.7' services: sentinel1: image: redis container_name: redis-sentinel-1 ports: - 26379:26379 command: redis-sentinel /usr/local/etc/redis/sentinel.conf volumes: - ./sentinel1.conf:/usr/local/etc/redis/sentinel.conf sentinel2: image: redis container_name: redis-sentinel-2 ports: - 26380:26379 command: redis-sentinel /usr/local/etc/redis/sentinel.conf volumes: - ./sentinel2.conf:/usr/local/etc/redis/sentinel.conf sentinel3: image: redis container_name: redis-sentinel-3 ports: - 26381:26379 command: redis-sentinel /usr/local/etc/redis/sentinel.conf volumes: - ./sentinel3.conf:/usr/local/etc/redis/sentinel.conf

修改 Sentinel 配置文件

需要三份 sentinel.conf 配置文件，分别为 sentinel1.conf，sentinel2.conf，sentinel3.conf，配置文件内容相同

port 26379 dir /tmp # 自定义集群名，其中 127.0.0.1 为 redis-master 的 ip，6379 为 redis-master 的端口，2 为最小投票数（因为有 3 台 Sentinel 所以可以设置成 2） sentinel monitor mymaster 192.168.100.11 6379 2 sentinel down-after-milliseconds mymaster 30000 sentinel parallel-syncs mymaster 1 sentinel failover-timeout mymaster 180000 sentinel deny-scripts-reconfig yes

查看集群是否生效

进入 Sentinel 容器，使用 Sentinel API 查看监控情况：

docker exec -it redis-sentinel-1 /bin/bash redis-cli -p 26379 sentinel master mymaster sentinel slaves mymaster 127.0.0.1:26379> sentinel slaves mymaster 1) 1) "name" 2) "172.19.0.3:6379" 3) "ip" 4) "172.19.0.3" 5) "port" 6) "6379" 7) "runid" 8) "" 9) "flags" 10) "s_down,slave" 11) "link-pending-commands"