docker搭建redis哨兵集群並且整合springboot的實現

version: "3"
services:
  master:
    image: redis:latest
    container_name: my_redis_master
    command: redis-server --requirepass root  # 在連接容器時需要密碼
    ports:
      - 6379:6379
  slave1:
    image: redis:latest
    depends_on:  # 這裡目的是需要先啟動master，隨後再啟動slave節點
      - master
    container_name: my_redis_slave1
    command: redis-server --slaveof my_redis_master 6379 --requirepass root --masterauth root # 再容器啟動後，通過這裡命令來指定主節點ip地址
    ports:
      - 6380:6379
  slave2:
    image: redis:latest
    depends_on:
      - master
    container_name: my_redis_slave2
    ports:
     - 6381:6379
    command: redis-server --slaveof my_redis_master 6379 --requirepass root --masterauth root
networks:   # 這裡是配置網絡環境，目的是讓容器之間能夠相互連接，如果不配置，哨兵將獲取不到從節點的信息，並且無法轉換master節點
  default:
    external:
      name: redis_net

version: '3'
services:
  sentinel1:
    image: redis
    container_name: redis-sentinel-1
    networks:
      - redis_net
    ports:
      - 26379:26379
    command: redis-sentinel /usr/local/etc/redis/sentinel.conf  # 啟動哨兵，並且指定配置文件
    volumes:
      - ./sentinel1.conf:/usr/local/etc/redis/sentinel.conf

  sentinel2:
    image: redis
    container_name: redis-sentinel-2
    networks:
      - redis_net
    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
    networks:
      - redis_net
    ports:
      - 26381:26379
    command: redis-sentinel /usr/local/etc/redis/sentinel.conf
    volumes:
      - ./sentinel3.conf:/usr/local/etc/redis/sentinel.conf
networks:  # 這裡指定網絡跟redis在同一個網絡環境下
  redis_net:
    external:
      name: redis_net

sentinel配置文件，將下面的配置文件 cp成三分就行
port 26379
dir /tmp
sentinel monitor mymaster 192.168.16.2 6379 2  #指定集群的名字以及集群中master的ip地址，這裡是容器地址，如果是用的虛擬機地址我這邊會導致master轉換不瞭。2就是指哨兵有多少個哨兵認為失效master就失效，保證超過50%就行
sentinel auth-pass mymaster root # 重點：我就是在這裡忘瞭配置master需要密碼登陸 導致一直獲取不到master節點下的從信息
sentinel down-after-milliseconds mymaster 30000 #這裡是指定master在失效之後多久就認為失效
sentinel parallel-syncs mymaster 1 # failover進行主備切換時最多可以有多少個slave對新的master進行同步，值越小完成failover的時間就越長，設置為1就是每次隻有一個slave處於不能處理命令的狀態
sentinel failover-timeout mymaster 180000 

sentinel deny-scripts-reconfig yes

<dependency>

      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-redis</artifactId>
      <!-- 排除lettuce包，使用jedis代替-->
      <exclusions>
        <exclusion>
          <groupId>io.lettuce</groupId>
          <artifactId>lettuce-core</artifactId>
        </exclusion>
      </exclusions>
    </dependency>

    <dependency>
      <groupId>redis.clients</groupId>
      <artifactId>jedis</artifactId>
      <version>3.0.1</version>
    </dependency>

spring:
  redis:
    sentinel:
      master: mymaster
      nodes: 192.168.16.5:26379,192.168.16.6:26380,192.168.16.7:26381  # 這裡是連接的docker容器中哨兵的ip
    jedis:
      pool:
        max-idle: 8
        min-idle: 0
        max-wait: -1
        max-active: 8
    password: root

@Bean
    public RedisTemplate<String,Object> redisTemplate(RedisConnectionFactory redisConnectionFactory){
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);

        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);

        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();

        // key采用String的序列化方式
        redisTemplate.setKeySerializer(stringRedisSerializer);
        // hash的key也采用String的序列化方式
        redisTemplate.setHashKeySerializer(stringRedisSerializer);
        // value序列化方式采用jackson
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
        // hash的value序列化方式采用jackson
        redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }