使用Docker配置redis sentinel哨兵的方法步骤

目录1.配置主从2. 配置哨兵3.SpringBoot连接

本文演示一主二从。

先说一下遇到的问题。我看网上说想配置哨兵，必须让启动redis的docker网络模式为host，否则无法访问到从还是什么的。我指定–network host后无法外网访问，redis desktop manager连不上redis了，后来发现我这个新克隆的机器没关防火墙，关上就好了。

1.配置主从

docker pull一下redis

master

mkdir -p /mydata/redis/6379/conf mkdir -p /mydata/redis/6379/data touch /mydata/redis/6379/conf/redis.conf echo “appendonly yes” >> /mydata/redis/6379/conf/redis.conf docker run –network host –name redis6379 -v /mydata/redis/6379/data:/data -v /mydata/redis/6379/conf/redis.conf:/etc/redis/redis.conf -d redis redis-server /etc/redis/redis.conf –port 6379

slave

#slave1 mkdir -p /mydata/redis/6380/conf mkdir -p /mydata/redis/6380/data touch /mydata/redis/6380/conf/redis.conf echo “appendonly yes” >> /mydata/redis/6380/conf/redis.conf docker run –network host –name redis6380 -v /mydata/redis/6380/data:/data -v /mydata/redis/6380/conf/redis.conf:/etc/redis/redis.conf -d redis redis-server /etc/redis/redis.conf –port 6380 –slaveof 192.168.243.4 6379 #slave2 mkdir -p /mydata/redis/6381/conf mkdir -p /mydata/redis/6381/data touch /mydata/redis/6381/conf/redis.conf echo “appendonly yes” >> /mydata/redis/6381/conf/redis.conf docker run –network host –name redis6381 -v /mydata/redis/6381/data:/data -v /mydata/redis/6381/conf/redis.conf:/etc/redis/redis.conf -d redis redis-server /etc/redis/redis.conf –port 6381 –slaveof 192.168.243.4 6379

查看配置：

#主 docker exec -it redis6379 redis-cli >info replication #从 docker exec -it redis6380 redis-cli -p 6380 >info replication

2. 配置哨兵

master

mkdir /mydata/redis/6379/sentinel mkdir /mydata/redis/6379/sentinel/log vi /mydata/redis/6379/sentinel/sentinel.conf #输入 port 26379 dir “/var/log/sentinel” logfile “/var/log/sentinel/26379.log” sentinel monitor mymaster 192.168.243.4 6379 1 #这里暂时设置成1  #方便看一下主挂掉是什么效果 sentinel down-after-milliseconds mymaster 5000 sentinel parallel-syncs mymaster 1 sentinel failover-timeout mymaster 180000 #end docker run -d –name sentinel26379 -v /mydata/redis/6379/sentinel/sentinel.conf:/conf/sentinel.conf -v /mydata/redis/6379/sentinel/log:/var/log/sentinel –network host redis redis-sentinel /conf/sentinel.conf

先进行测试：

docker exec -it redis6379 redis-cli > SHUTDOWN > exit cat /mydata/redis/6379/sentinel/log/26379.log

此时redis6381已成为新的master

再启动docker start redis6379 6379是slave了

测试成功，修改上面配置文件的sentinel monitor mymaster 192.168.243.4 6379 2 数字配置为2，代表至少有2个Sentinel节点认为主节点不可达，那么这个不可达的判定才是客观的。为了防止票数相同，sentinel启动奇数个。

slave

#slave1 mkdir /mydata/redis/6380/sentinel mkdir /mydata/redis/6380/sentinel/log vi /mydata/redis/6380/sentinel/sentinel.conf #输入 port 26380 dir “/var/log/sentinel” logfile “/var/log/sentinel/26380.log” sentinel monitor mymaster 192.168.243.4 6380 2 sentinel down-after-milliseconds mymaster 5000 sentinel parallel-syncs mymaster 1 sentinel failover-timeout mymaster 180000 #end docker run -d –name sentinel26380 -v /mydata/redis/6380/sentinel/sentinel.conf:/conf/sentinel.conf -v /mydata/redis/6380/sentinel/log:/var/log/sentinel –network host redis redis-sentinel /conf/sentinel.conf #slave2 mkdir /mydata/redis/6381/sentinel mkdir /mydata/redis/6381/sentinel/log vi /mydata/redis/6381/sentinel/sentinel.conf #输入 port 26381 dir “/var/log/sentinel” logfile “/var/log/sentinel/26381.log” sentinel monitor mymaster 192.168.243.4 6381 2 sentinel down-after-milliseconds mymaster 5000 sentinel parallel-syncs mymaster 1 sentinel failover-timeout mymaster 180000 #end docker run -d –name sentinel26381 -v /mydata/redis/6381/sentinel/sentinel.conf:/conf/sentinel.conf -v /mydata/redis/6381/sentinel/log:/var/log/sentinel –network host redis redis-sentinel /conf/sentinel.conf

3.SpringBoot连接

application.yml

spring: redis: timeout: 5000 sentinel: master: mymaster nodes: 192.168.243.4:26379,192.168.243.4:26380,192.168.243.4:26381

controller

@Autowired private StringRedisTemplate redisTemplate; @RequestMapping(“/redis”) public String redis() { redisTemplate.opsForValue().set(“test”, “121323123”); String test = redisTemplate.opsForValue().get(“test”); return “RESULT: ” + test; }

访问localhost:8080/redis

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