Redis-哨兵机制，实现高可用

vivion27

14157:X 11 Dec 13:26:59.038 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo　　
14157:X 11 Dec 13:26:59.038 # Redis version=4.0.1, bits=64, commit=00000000, modified=0, pid=14157, just started
　　
14157:X 11 Dec 13:26:59.038 # Configuration loaded
　　
14157:X 11 Dec 13:26:59.039 * Increased maximum number of open files to 10032 (it was originally set to 1024).
　　
                _._
　　
           _.-``__ ''-._
　　
      _.-``    `.  `_.  ''-._           Redis 4.0.1 (00000000/0) 64 bit
　　
  .-`` .-```.  ```\/    _.,_ ''-._
　　
(    '      ,       .-`  | `,    )     Running in sentinel mode
　　
|`-._`-...-` __...-.``-._|'` _.-'|     Port: 26379
　　
|    `-._   `._    /     _.-'    |     PID: 14157
　　
  `-._    `-._  `-./  _.-'    _.-'
　　
|`-._`-._    `-.__.-'    _.-'_.-'|
　　
|    `-._`-._        _.-'_.-'    |           http://redis.io
　　
  `-._    `-._`-.__.-'_.-'    _.-'
　　
|`-._`-._    `-.__.-'    _.-'_.-'|
　　
|    `-._`-._        _.-'_.-'    |
　　
  `-._    `-._`-.__.-'_.-'    _.-'
　　
      `-._    `-.__.-'    _.-'
　　
          `-._        _.-'
　　
              `-.__.-'
　　
14157:X 11 Dec 13:26:59.041 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
　　
14157:X 11 Dec 13:26:59.042 # Sentinel ID is 8583cec1a7634843d0141f9a7e00e5ee5f0b4293
　　
14157:X 11 Dec 13:26:59.042 # +monitor master mymaster 10.0.0.140 6379 quorum 2
　　
14157:X 11 Dec 13:26:59.043 * +slave slave 10.0.0.141:6379 10.0.0.141 6379 @ mymaster 10.0.0.140 6379
　　
14157:X 11 Dec 13:26:59.044 * +slave slave 10.0.0.142:6379 10.0.0.142 6379 @ mymaster 10.0.0.140 6379
　　
14157:X 11 Dec 13:26:59.359 * +sentinel sentinel 33890665f4d321bbf024646efdd169a16713e953 10.0.0.140 26379 @ mymaster 10.0.0.140 6379
　　
14157:X 11 Dec 13:27:12.474 * +sentinel sentinel 715f518a156837119ddf282b86b4fae992b4602c 10.0.0.142 26379 @ mymaster 10.0.0.140 6379
　　
14157:X 11 Dec 13:31:43.607 # +sdown master mymaster 10.0.0.140 6379
　　
14157:X 11 Dec 13:31:43.607 # +sdown sentinel 33890665f4d321bbf024646efdd169a16713e953 10.0.0.140 26379 @ mymaster 10.0.0.140 6379
　　
14157:X 11 Dec 13:31:48.835 # +new-epoch 1
　　
14157:X 11 Dec 13:31:50.877 # +vote-for-leader 715f518a156837119ddf282b86b4fae992b4602c 1
　　
14157:X 11 Dec 13:31:50.877 # +tilt #tilt mode entered
　　
14157:X 11 Dec 13:32:20.887 # -tilt #tilt mode exited
　　
14157:X 11 Dec 13:32:20.887 # +odown master mymaster 10.0.0.140 6379 #quorum 2/2
　　
14157:X 11 Dec 13:32:20.887 # Next failover delay: I will not start a failover before Mon Dec 11 13:37:51 2017
　　
14157:X 11 Dec 13:32:21.759 # +config-update-from sentinel 715f518a156837119ddf282b86b4fae992b4602c 10.0.0.142 26379 @ mymaster 10.0.0.140 6379
　　
14157:X 11 Dec 13:32:21.759 # +switch-master mymaster 10.0.0.140 6379 10.0.0.142 6379
　　
14157:X 11 Dec 13:32:21.760 * +slave slave 10.0.0.141:6379 10.0.0.141 6379 @ mymaster 10.0.0.142 6379
　　
14157:X 11 Dec 13:32:21.760 * +slave slave 10.0.0.140:6379 10.0.0.140 6379 @ mymaster 10.0.0.142 6379