Redis主从加Sentinel模式部署

总体部署

• 一主二从三哨兵
• ip地址分配分别为

1. 主 127.0.0.1:6379
2. 从 127.0.0.1:6389
3. 从 127.0.0.1:6399
4. 哨兵 127.0.0.1:26379
5. 哨兵 127.0.0.1:26389
6. 哨兵 127.0.0.1:26399

一主二从的配置文件 redis.conf设置

主的保持默认的不变

二个从的分别打开配置文件

找到设置端口的地方

分别设置为 6389 和6399

# Accept connections on the specified port, default is 6379 (IANA #815344).
# If port 0 is specified Redis will not listen on a TCP socket.
port 6389

# Accept connections on the specified port, default is 6379 (IANA #815344).
# If port 0 is specified Redis will not listen on a TCP socket.
port 6399

然后都在

# slaveof <masterip> <masterport>

一行的下面增加

slaveof 127.0.0.1 6379

这样主从的配置就ok了

三个哨兵的sentinel.conf配置

分别打开sentinel.conf配置文件

修改他们的端口为

 26379 26389 26399

sentinel monitor mymaster 127.0.0.1 6379 2

配置中的这一行表示 我们要监视的主的ip和端口，mymaster是主的名称，因为我们的主是127.0.0.1:6379,所以三个哨兵中的这个地方都不用修改。

然后所有的配置就ok了，本地测试环境貌似需要改动的地方不多。

启动

• 主

进入src目录

./redis-server ../redis.conf

25496:M 18 Feb 21:43:12.616 * Increased maximum number of open files to 10032 (it was originally set to 4864).
                _._
           _.-``__ ''-._
      _.-``    `.  `_.  ''-._           Redis 3.2.8 (00000000/0) 64 bit
  .-`` .-```.  ```/    _.,_ ''-._
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._    /     _.-'    |     PID: 25496
  `-._    `-._  `-./  _.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |           http://redis.io
  `-._    `-._`-.__.-'_.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |
  `-._    `-._`-.__.-'_.-'    _.-'
      `-._    `-.__.-'    _.-'
          `-._        _.-'
              `-.__.-'

25496:M 18 Feb 21:43:12.618 # Server started, Redis version 3.2.8
25496:M 18 Feb 21:43:12.618 * DB loaded from disk: 0.000 seconds
25496:M 18 Feb 21:43:12.618 * The server is now ready to accept connections on port 6379
25496:M 18 Feb 21:43:21.196 * Slave 127.0.0.1:6389 asks for synchronization
25496:M 18 Feb 21:43:21.196 * Full resync requested by slave 127.0.0.1:6389
25496:M 18 Feb 21:43:21.196 * Starting BGSAVE for SYNC with target: disk
25496:M 18 Feb 21:43:21.197 * Background saving started by pid 25498
25498:C 18 Feb 21:43:21.198 * DB saved on disk
25496:M 18 Feb 21:43:21.198 * Background saving terminated with success
25496:M 18 Feb 21:43:21.198 * Synchronization with slave 127.0.0.1:6389 succeeded
25496:M 18 Feb 21:43:28.979 * Slave 127.0.0.1:6399 asks for synchronization
25496:M 18 Feb 21:43:28.979 * Full resync requested by slave 127.0.0.1:6399
25496:M 18 Feb 21:43:28.979 * Starting BGSAVE for SYNC with target: disk
25496:M 18 Feb 21:43:28.980 * Background saving started by pid 25500
25500:C 18 Feb 21:43:28.986 * DB saved on disk
25496:M 18 Feb 21:43:29.044 * Background saving terminated with success
25496:M 18 Feb 21:43:29.044 * Synchronization with slave 127.0.0.1:6399 succeeded

•  从1

进入src目录

./redis-server ../redis.conf

25497:S 18 Feb 21:43:21.194 * Increased maximum number of open files to 10032 (it was originally set to 4864).
                _._
           _.-``__ ''-._
      _.-``    `.  `_.  ''-._           Redis 3.2.8 (00000000/0) 64 bit
  .-`` .-```.  ```/    _.,_ ''-._
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6389
 |    `-._   `._    /     _.-'    |     PID: 25497
  `-._    `-._  `-./  _.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |           http://redis.io
  `-._    `-._`-.__.-'_.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |
  `-._    `-._`-.__.-'_.-'    _.-'
      `-._    `-.__.-'    _.-'
          `-._        _.-'
              `-.__.-'

25497:S 18 Feb 21:43:21.196 # Server started, Redis version 3.2.8
25497:S 18 Feb 21:43:21.196 * DB loaded from disk: 0.000 seconds
25497:S 18 Feb 21:43:21.196 * The server is now ready to accept connections on port 6389
25497:S 18 Feb 21:43:21.196 * Connecting to MASTER 127.0.0.1:6379
25497:S 18 Feb 21:43:21.196 * MASTER <-> SLAVE sync started
25497:S 18 Feb 21:43:21.196 * Non blocking connect for SYNC fired the event.
25497:S 18 Feb 21:43:21.196 * Master replied to PING, replication can continue...
25497:S 18 Feb 21:43:21.196 * Partial resynchronization not possible (no cached master)
25497:S 18 Feb 21:43:21.197 * Full resync from master: b17cd8764974c68bedacb2e5927a04e9ff15f7df:1
25497:S 18 Feb 21:43:21.198 * MASTER <-> SLAVE sync: receiving 108 bytes from master
25497:S 18 Feb 21:43:21.198 * MASTER <-> SLAVE sync: Flushing old data
25497:S 18 Feb 21:43:21.198 * MASTER <-> SLAVE sync: Loading DB in memory
25497:S 18 Feb 21:43:21.199 * MASTER <-> SLAVE sync: Finished with success

• 从2

进入src目录

./redis-server ../redis.conf

25499:S 18 Feb 21:43:28.975 * Increased maximum number of open files to 10032 (it was originally set to 4864).
                _._
           _.-``__ ''-._
      _.-``    `.  `_.  ''-._           Redis 3.2.8 (00000000/0) 64 bit
  .-`` .-```.  ```/    _.,_ ''-._
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6399
 |    `-._   `._    /     _.-'    |     PID: 25499
  `-._    `-._  `-./  _.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |           http://redis.io
  `-._    `-._`-.__.-'_.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |
  `-._    `-._`-.__.-'_.-'    _.-'
      `-._    `-.__.-'    _.-'
          `-._        _.-'
              `-.__.-'

25499:S 18 Feb 21:43:28.977 # Server started, Redis version 3.2.8
25499:S 18 Feb 21:43:28.977 * DB loaded from disk: 0.000 seconds
25499:S 18 Feb 21:43:28.977 * The server is now ready to accept connections on port 6399
25499:S 18 Feb 21:43:28.979 * Connecting to MASTER 127.0.0.1:6379
25499:S 18 Feb 21:43:28.979 * MASTER <-> SLAVE sync started
25499:S 18 Feb 21:43:28.979 * Non blocking connect for SYNC fired the event.
25499:S 18 Feb 21:43:28.979 * Master replied to PING, replication can continue...
25499:S 18 Feb 21:43:28.979 * Partial resynchronization not possible (no cached master)
25499:S 18 Feb 21:43:28.980 * Full resync from master: b17cd8764974c68bedacb2e5927a04e9ff15f7df:15
25499:S 18 Feb 21:43:29.044 * MASTER <-> SLAVE sync: receiving 108 bytes from master
25499:S 18 Feb 21:43:29.045 * MASTER <-> SLAVE sync: Flushing old data
25499:S 18 Feb 21:43:29.045 * MASTER <-> SLAVE sync: Loading DB in memory
25499:S 18 Feb 21:43:29.045 * MASTER <-> SLAVE sync: Finished with success

• 哨兵1

进入src目录

 ./redis-sentinel ../sentinel.conf

25501:X 18 Feb 21:43:35.300 * Increased maximum number of open files to 10032 (it was originally set to 4864).
                _._
           _.-``__ ''-._
      _.-``    `.  `_.  ''-._           Redis 3.2.8 (00000000/0) 64 bit
  .-`` .-```.  ```/    _.,_ ''-._
 (    '      ,       .-`  | `,    )     Running in sentinel mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 26379
 |    `-._   `._    /     _.-'    |     PID: 25501
  `-._    `-._  `-./  _.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |           http://redis.io
  `-._    `-._`-.__.-'_.-'    _.-'
 |`-._`-._    `-.__.-'    _.-'_.-'|
 |    `-._`-._        _.-'_.-'    |
  `-._    `-._`-.__.-'_.-'    _.-'
      `-._    `-.__.-'    _.-'
          `-._        _.-'
              `-.__.-'

25501:X 18 Feb 21:43:35.301 # Sentinel ID is 6f3360c06cafe7807e2c1ae00fe7c791354b8b24
25501:X 18 Feb 21:43:35.301 # +monitor master mymaster 127.0.0.1 6379 quorum 2

• 哨兵2和哨兵3启动过程相同

验证

新开一个命令行窗口进入redis的src目录，用redis-cli工具登录其中一个哨兵

./redis-cli -p 26379

连接成功后运行如下命令

sentinel master mymaster

结果如下

127.0.0.1:26379> sentinel master mymaster
 1) "name"
 2) "mymaster"
 3) "ip"
 4) "127.0.0.1"
 5) "port"
 6) "6379"
 7) "runid"
 8) "b17cd8764974c68bedacb2e5927a04e9ff15f7df"
 9) "flags"
10) "master"
11) "link-pending-commands"
12) "0"
13) "link-refcount"
14) "1"
15) "last-ping-sent"
16) "0"
17) "last-ok-ping-reply"
18) "703"
19) "last-ping-reply"
20) "703"
21) "down-after-milliseconds"
22) "30000"
23) "info-refresh"
24) "1090"
25) "role-reported"
26) "master"
27) "role-reported-time"
28) "3253725"
29) "config-epoch"
30) "0"
31) "num-slaves"
32) "2"
33) "num-other-sentinels"
34) "2"
35) "quorum"
36) "2"
37) "failover-timeout"
38) "180000"
39) "parallel-syncs"
40) "1"

 参考

https://redis.io/topics/sentinel

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