CentOS 1908 配置 Redis 5.0.7 三（哨兵模式）

喜欢ヅ旅行 2023-07-02 06:26 17阅读 0赞

CentOS 下载：[http://mirrors.aliyun.com/centos/][http_mirrors.aliyun.com_centos]

Redis：[http://download.redis.io/releases/][http_download.redis.io_releases]

[CentOS 1908 配置 Redis 5.0.7 一（单节点）][CentOS 1908 _ Redis 5.0.7]

[CentOS 1908 配置 Redis 5.0.7 二（主从复制）][CentOS 1908 _ Redis 5.0.7 1]

[CentOS 1908 配置 Redis 5.0.7 四（集群配置）][CentOS 1908 _ Redis 5.0.7 2]

[CentOS 1908 配置 Redis 5.0.7 五（集群新增 主从节点）][CentOS 1908 _ Redis 5.0.7 _]

--------------------

1.  在 Redis 文件夹中，复制一份 redis.conf：
    
        cp redis.conf redis6379.conf
        cp redis.conf redis6380.conf
        cp redis.conf redis6381.conf
2.  配置 redis\*.conf
    
    1.  redis6379.conf：
        
            # 注释 bind
            # bind 127.0.0.1 
            protected-mode no
            port 6379
            daemonize yes
    2.  redis6380.conf：
        
            # 注释 bind
            # bind 127.0.0.1 
            protected-mode no
            port 6380
            slaveof 127.0.0.1 6379
            daemonize yes
    3.  redis6381.conf：
        
            # 注释 bind
            # bind 127.0.0.1 
            protected-mode no
            port 6381
            slaveof 127.0.0.1 6379
            daemonize yes
3.  在 Redis 文件夹中，复制一份 redis.conf：
    
        cp sentinel.conf sentinel26379.conf
        cp sentinel.conf sentinel26380.conf
        cp sentinel.conf sentinel26381.conf
4.  配置 sentinel26379.conf：
    
    1.  sentinel.conf：
        
            port 26379
            sentinel monitor mymaster 127.0.0.1 6379 2
    2.  sentinel26380.conf：
        
            port 26380
            sentinel monitor mymaster 127.0.0.1 6379 2
    3.  sentinel26381.conf：
        
            port 26381
            sentinel monitor mymaster 127.0.0.1 6379 2
5.  启动 Redis（按照主从顺序）：
    
        src/redis-server redis6379.conf
        src/redis-server redis6380.conf
        src/redis-server redis6381.conf
6.  启动哨兵（按照主从顺序）：
    
        src/redis-sentinel sentinel26379.conf
        src/redis-sentinel sentinel26380.conf
        src/redis-sentinel sentinel26381.conf
7.  查看Redis状态：
    
    1.  查看 redis 6379（主节点）：  
        从下面的 role:**master** 可以看出，redis 6379 为主节点：
        
            [root@192 redis-5.0.7]# src/redis-cli -h 127.0.0.1 -p 6379
            127.0.0.1:6379> info replication
            # Replication
            role:master
            connected_slaves:2
            slave0:ip=127.0.0.1,port=6380,state=online,offset=26140,lag=0
            slave1:ip=127.0.0.1,port=6381,state=online,offset=26140,lag=1
            master_replid:4333b9916945c9fc15b003ce0ff61ec7455cc0e8
            master_replid2:0000000000000000000000000000000000000000
            master_repl_offset:26140
            second_repl_offset:-1
            repl_backlog_active:1
            repl_backlog_size:1048576
            repl_backlog_first_byte_offset:1
            repl_backlog_histlen:26140
            127.0.0.1:6379>
    2.  查看 redis 6380（从节点）：  
        从下面的 role:**slave** 可以看出，redis 6380 为从节点：
        
            [root@192 redis-5.0.7]# src/redis-cli -h 127.0.0.1 -p 6380
            127.0.0.1:6380> info replication
            # Replication
            role:slave
            master_host:127.0.0.1
            master_port:6379
            master_link_status:up
            master_last_io_seconds_ago:1
            master_sync_in_progress:0
            slave_repl_offset:37795
            slave_priority:100
            slave_read_only:1
            connected_slaves:0
            master_replid:4333b9916945c9fc15b003ce0ff61ec7455cc0e8
            master_replid2:0000000000000000000000000000000000000000
            master_repl_offset:37795
            second_repl_offset:-1
            repl_backlog_active:1
            repl_backlog_size:1048576
            repl_backlog_first_byte_offset:1
            repl_backlog_histlen:37795
            127.0.0.1:6380>
    3.  查看 redis 6381（从节点）：  
        从下面的 role:**slave** 可以看出，redis 6381 为从节点：
        
            [root@192 redis-5.0.7]# src/redis-cli -h 127.0.0.1 -p 6381
            127.0.0.1:6381> info replication
            # Replication
            role:slave
            master_host:127.0.0.1
            master_port:6379
            master_link_status:up
            master_last_io_seconds_ago:1
            master_sync_in_progress:0
            slave_repl_offset:46230
            slave_priority:100
            slave_read_only:1
            connected_slaves:0
            master_replid:4333b9916945c9fc15b003ce0ff61ec7455cc0e8
            master_replid2:0000000000000000000000000000000000000000
            master_repl_offset:46230
            second_repl_offset:-1
            repl_backlog_active:1
            repl_backlog_size:1048576
            repl_backlog_first_byte_offset:1
            repl_backlog_histlen:46230
            127.0.0.1:6381>
8.  故障转移：
    
    1.  将 redis 6379 强制停止：
        
            [root@192 redis-5.0.7]# ps -ef | grep redis
            root       2703      1  0 16:18 ?        00:00:00 src/redis-server *:6379
            root       2708      1  0 16:18 ?        00:00:00 src/redis-server *:6380
            root       2714      1  0 16:18 ?        00:00:00 src/redis-server *:6381
            root       2810      1  0 16:21 ?        00:00:00 src/redis-sentinel *:26379 [sentinel]
            root       2815      1  0 16:21 ?        00:00:00 src/redis-sentinel *:26380 [sentinel]
            root       2820      1  0 16:21 ?        00:00:00 src/redis-sentinel *:26381 [sentinel]
            root      51237  42180  0 16:23 pts/1    00:00:00 src/redis-cli -h 127.0.0.1 -p 6379
            root      51296  51258  0 16:24 pts/2    00:00:00 src/redis-cli -h 127.0.0.1 -p 6380
            root      51352  51316  0 16:25 pts/3    00:00:00 src/redis-cli -h 127.0.0.1 -p 6381
            root      51412   2368  0 16:29 pts/0    00:00:00 grep --color=auto redis
            [root@192 redis-5.0.7]# kill -9 2703
            [root@192 redis-5.0.7]#
    2.  查看主从节点：
        
        1.  redis 6379 已停止。
        2.  查看 redis 6380：  
            从下面的 role:**slave** 可以看出，redis 6380 为从节点：
            
                127.0.0.1:6380> info replication
                # Replication
                role:slave
                master_host:127.0.0.1
                master_port:6381
                master_link_status:up
                master_last_io_seconds_ago:0
                master_sync_in_progress:0
                slave_repl_offset:112137
                slave_priority:100
                slave_read_only:1
                connected_slaves:0
                master_replid:764de6af1521b0204f26d230547986bc2d629efb
                master_replid2:4333b9916945c9fc15b003ce0ff61ec7455cc0e8
                master_repl_offset:112137
                second_repl_offset:102882
                repl_backlog_active:1
                repl_backlog_size:1048576
                repl_backlog_first_byte_offset:1
                repl_backlog_histlen:112137
                127.0.0.1:6380>
        3.  查看 redis 6381：  
            从下面的 role:**master** 可以看出，redis 6381 为主节点（故障产生时，使用投票机制选举中的主节点）：
            
                127.0.0.1:6381> info replication
                # Replication
                role:master
                connected_slaves:1
                slave0:ip=127.0.0.1,port=6380,state=online,offset=112536,lag=1
                master_replid:764de6af1521b0204f26d230547986bc2d629efb
                master_replid2:4333b9916945c9fc15b003ce0ff61ec7455cc0e8
                master_repl_offset:112669
                second_repl_offset:102882
                repl_backlog_active:1
                repl_backlog_size:1048576
                repl_backlog_first_byte_offset:1
                repl_backlog_histlen:112669
                127.0.0.1:6381>
9.  故障修复：
    
    1.  重新启动 redis 6379：
        
            src/redis-server redis6379.conf
    2.  查看 redis 6379：  
        从下面的 role:**slave** 可以看出，redis 6379 为从节点（主节点故障修复后，转为从节点）：
        
            127.0.0.1:6379> info replication
            # Replication
            role:slave
            master_host:127.0.0.1
            master_port:6381
            master_link_status:up
            master_last_io_seconds_ago:0
            master_sync_in_progress:0
            slave_repl_offset:154482
            slave_priority:100
            slave_read_only:1
            connected_slaves:0
            master_replid:764de6af1521b0204f26d230547986bc2d629efb
            master_replid2:0000000000000000000000000000000000000000
            master_repl_offset:154482
            second_repl_offset:-1
            repl_backlog_active:1
            repl_backlog_size:1048576
            repl_backlog_first_byte_offset:146690
            repl_backlog_histlen:7793
            127.0.0.1:6379>
    3.  查看 redis 6380：  
        从下面的 role:**slave** 可以看出，redis 6380 为从节点：
        
            127.0.0.1:6380> info replication
            # Replication
            role:slave
            master_host:127.0.0.1
            master_port:6381
            master_link_status:up
            master_last_io_seconds_ago:0
            master_sync_in_progress:0
            slave_repl_offset:160376
            slave_priority:100
            slave_read_only:1
            connected_slaves:0
            master_replid:764de6af1521b0204f26d230547986bc2d629efb
            master_replid2:4333b9916945c9fc15b003ce0ff61ec7455cc0e8
            master_repl_offset:160376
            second_repl_offset:102882
            repl_backlog_active:1
            repl_backlog_size:1048576
            repl_backlog_first_byte_offset:1
            repl_backlog_histlen:160376
            127.0.0.1:6380>
    4.  查看 redis 6381：  
        从下面的 role:**master** 可以看出，redis 6381 为主节点（故障产生时，使用投票机制选举中的主节点，除发生故障外，主节点将保持不变）：
        
            127.0.0.1:6381> info replication
            # Replication
            role:master
            connected_slaves:2
            slave0:ip=127.0.0.1,port=6380,state=online,offset=166949,lag=1
            slave1:ip=127.0.0.1,port=6379,state=online,offset=167082,lag=0
            master_replid:764de6af1521b0204f26d230547986bc2d629efb
            master_replid2:4333b9916945c9fc15b003ce0ff61ec7455cc0e8
            master_repl_offset:167082
            second_repl_offset:102882
            repl_backlog_active:1
            repl_backlog_size:1048576
            repl_backlog_first_byte_offset:1
            repl_backlog_histlen:167082
            127.0.0.1:6381>
10. 只能在主节点增加修改数据。

[http_mirrors.aliyun.com_centos]: http://mirrors.aliyun.com/centos/
[http_download.redis.io_releases]: http://download.redis.io/releases/
[CentOS 1908 _ Redis 5.0.7]: https://xuxiaowei.blog.csdn.net/article/details/103964264
[CentOS 1908 _ Redis 5.0.7 1]: https://xuxiaowei.blog.csdn.net/article/details/103964991
[CentOS 1908 _ Redis 5.0.7 2]: https://xuxiaowei.blog.csdn.net/article/details/104239333
[CentOS 1908 _ Redis 5.0.7 _]: https://xuxiaowei.blog.csdn.net/article/details/104402130