本文以docker-compose 搭建高可用Redis 主从、哨兵集群为例子
关于redis主从，哨兵集群原理参见：Redis 单机安装/ 哨兵模式集群安装
1：获取redis镜像
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docker pull redis:6.2.7 |
2：创建redis主从+哨兵docker-compose文件
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cd /opt/docker/redisvi docker-compose.yml |
docker-compose.yml的内容如下
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version: '3'services: master: image: redis:6.2.7 ## 镜像 container_name: redis-master command: redis-server /etc/redis/redis.conf --requirepass 123456 --masterauth 123456 volumes: - /opt/docker/redis/data/redis_data1:/data - /opt/docker/redis/conf/redis1.conf:/etc/redis/redis.conf network_mode: "host" slave1: image: redis:6.2.7 ## 镜像 container_name: redis-slave-1 volumes: - /opt/docker/redis/data/redis_data2:/data - /opt/docker/redis/conf/redis2.conf:/etc/redis/redis.conf command: redis-server /etc/redis/redis.conf --slaveof redis-master 6379 --requirepass 123456 --masterauth 123456 depends_on: - master network_mode: "host" slave2: image: redis:6.2.7 ## 镜像 container_name: redis-slave-2 volumes: - /opt/docker/redis/data/redis_data3:/data - /opt/docker/redis/conf/redis3.conf:/etc/redis/redis.conf command: redis-server /etc/redis/redis.conf --slaveof redis-master 6379 --requirepass 123456 --masterauth 123456 depends_on: - master network_mode: "host" sentinel1: image: redis:6.2.7 ## 镜像 container_name: redis-sentinel-1 command: redis-sentinel /usr/local/etc/redis/sentinel.conf volumes: - /opt/docker/redis/conf/sentinel1.conf:/usr/local/etc/redis/sentinel.conf network_mode: "host" depends_on: - master - slave1 - slave2 sentinel2: image: redis:6.2.7 ## 镜像 container_name: redis-sentinel-2 command: redis-sentinel /usr/local/etc/redis/sentinel.conf volumes: - /opt/docker/redis/conf/sentinel2.conf:/usr/local/etc/redis/sentinel.conf network_mode: "host" depends_on: - master - slave1 - slave2 sentinel3: image: redis:6.2.7 ## 镜像 container_name: redis-sentinel-3 command: redis-sentinel /usr/local/etc/redis/sentinel.conf volumes: - /opt/docker/redis/conf/sentinel3.conf:/usr/local/etc/redis/sentinel.conf network_mode: "host" depends_on: - master - slave1 - slave2 |
3：redis配置和哨兵配置说明
查看配置文件的目录树
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cd /opt/docker/redistree ./ |
结构如下
redis1.conf，redis2.conf，redis3.conf配置如下
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#redis1.confbind 0.0.0.0port 6379protected-mode noslave-read-only no #redis2.confbind 0.0.0.0port 6380protected-mode noslave-read-only no #redis3.confbind 0.0.0.0port 6381protected-mode noslave-read-only no |
sentinel1.conf，sentinel1.conf，sentinel1.conf配置：
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#sentinel1.confport 26379dir /tmpsentinel monitor mymaster 192.168.18.131 6379 2sentinel auth-pass mymaster 123456 sentinel down-after-milliseconds mymaster 30000sentinel parallel-syncs mymaster 1sentinel failover-timeout mymaster 10000 sentinel deny-scripts-reconfig yes #sentinel2.confport 26380dir /tmpsentinel monitor mymaster 192.168.18.131 6379 2sentinel auth-pass mymaster 123456 sentinel down-after-milliseconds mymaster 30000sentinel parallel-syncs mymaster 1sentinel failover-timeout mymaster 10000 sentinel deny-scripts-reconfig yes #sentinel3.confport 26381dir /tmpsentinel monitor mymaster 192.168.18.131 6379 2sentinel auth-pass mymaster 123456 sentinel down-after-milliseconds mymaster 30000sentinel parallel-syncs mymaster 1sentinel failover-timeout mymaster 10000 sentinel deny-scripts-reconfig yes |
说明：
【sentinel monitor mymaster 192.168.18.131 6379 2】192.168.18.131为服务器的IP地址，6379为redis master的端口号
【sentinel auth-pass mymaster 123456 】设置主节点的密码
【sentinel down-after-milliseconds mymaster 30000】表示在一段时间范围内sentinel向master发送的心跳PING没有回复则认为master不可用了。
【sentinel parallel-syncs mymaster 1】的parallel-syncs表示设置在故障转移之后，同时可以重新配置使用新master的slave的数量。数字越低，更多的时间将会用故障转移完成，但是如果slaves配置为服务旧数据，你可能不希望所有的slave同时重新同步master。因为主从复制对于slave是非阻塞的，当停止从master加载批量数据时有一个片刻延迟。通过设置选项为1，确信每次只有一个slave是不可到达的。
【sentinel failover-timeout mymaster 10000 】表示10秒内mymaster还没活过来，则认为master宕机了。
redis_data1, redis_data2,redis_data3为空文件夹，用于存放redis数据文件
4：启动docker-compose
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docker-compose up#或者，后台启动docker-compose up -d |
5：查看启动情况
6：进入主节点查看集群情况
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docker exec -it 主节点容器id或者容器名称 bashredis-cli -p 6379info replication |
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原文链接：https://blog.csdn.net/qq_36793589/article/details/125670672
