dcoker搭建redis哨兵

红太狼 2023-01-01 07:00 124阅读 0赞

[root@localhost cluster_install_soft]# mkdir  redis-sentinel
    [root@localhost cluster_install_soft]# ls
    redis-sentinel  zookeeper-cluster
    [root@localhost cluster_install_soft]# cd redis-sentinel/
    [root@localhost redis-sentinel]# ls
    [root@localhost redis-sentinel]# mkdir redis
    [root@localhost redis-sentinel]# mkdir sentinel
    [root@localhost redis-sentinel]# cd redis/
    [root@localhost redis]# ls
    [root@localhost redis]# vim docker-compose.yml

version: '3.1'
    services:
      master:
       image: redis
       container_name: redis-master
       ports:
          - 6379:6379
       command: redis-server --replica-announce-ip 192.168.3.12 --replica-announce-port 6379
    
      slave1:
        image: redis
        container_name: redis-slave1
        ports:
          - 6380:6379
        command: redis-server --slaveof redis-master 6379 --replica-announce-ip 192.168.3.12 --replica-announce-port 6380
    
      slave2:
        image: redis
        container_name: redis-slave2
        ports:
          - 6381:6379
        command: redis-server --slaveof redis-master 6379 --replica-announce-ip 192.168.3.12 --replica-announce-port 6381

[root@localhost redis]# docker-compose up -d
    Creating redis-slave1 ... done
    Creating redis-master ... done
    Creating redis-slave2 ... done
    [root@localhost redis]# docker ps
    CONTAINER ID   IMAGE       COMMAND                  CREATED          STATUS          PORTS                                NAMES
    a440c83c58f8   redis       "docker-entrypoint.s…"   15 seconds ago   Up 12 seconds   0.0.0.0:6379->6379/tcp               redis-master
    e531ae128382   redis       "docker-entrypoint.s…"   15 seconds ago   Up 13 seconds   0.0.0.0:6381->6379/tcp               redis-slave2
    f151524910de   redis       "docker-entrypoint.s…"   15 seconds ago   Up 12 seconds   0.0.0.0:6380->6379/tcp               redis-slave1
    
    #进去docker内部
    [root@localhost redis]# docker exec -it a440c83c58f8 /bin/bash
    root@a440c83c58f8:/data# redis-cli

#### 搭建哨兵 ####

在哨兵文件夹下创建 vim docker-compose.yml 复制下面内容

version: '3.1'
    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

sentinel.conf的内容

#这个是容器内的端口
    port 26379
    sentinel announce-ip 192.168.3.12
    #这个是映射导宿主机的端口
    sentinel announce-port 26379
    #这个是redis master IP和端口
    sentinel monitor mymaster 192.168.3.12 6379 2
    #如果超过30秒redis没有响应,哨兵认为redis挂了
    sentinel down-after-milliseconds mymaster 30000
    sentinel parallel-syncs mymaster 1
    #投票选举失败,多久重新选举
    sentinel failover-timeout mymaster 180000
    sentinel deny-scripts-reconfig yes

上面这个内容需要创建3个文件,复制3份,端口需要改,宿主机的端口  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zOTUzMDY5NQ_size_16_color_FFFFFF_t_70]

查看日志

[root@localhost sentinel]# docker-compose  logs -f

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zOTUzMDY5NQ_size_16_color_FFFFFF_t_70 1]

最后一句意思: 集群名称mymaster,状态ok,当前redis端口6379,有2个从节点,有3个哨兵  
![这张图最后一句意思][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zOTUzMDY5NQ_size_16_color_FFFFFF_t_70 2]

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zOTUzMDY5NQ_size_16_color_FFFFFF_t_70 2]: /images/20221120/184aaad26c114b6e8707401359cf67b1.png