MySQL主从同步故障:Slave_SQL_Running:No 两种解决办法

 

mysql> show slave status\G

         .......
             Relay_Log_File: localhost-relay-bin.000535
              Relay_Log_Pos: 21795072
      Relay_Master_Log_File: localhost-bin.000094
           Slave_IO_Running: Yes
          Slave_SQL_Running: No
            Replicate_Do_DB: 
        Replicate_Ignore_DB: 
      ......

 

解决办法一:

Slave_SQL_Running: No
1.程序可能在slave上进行了写操作

2.也可能是slave机器重起后,事务回滚造成的.

一般是事务回滚造成的:
解决办法:
mysql> stop slave ;
mysql> set GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
mysql> start slave ;

 

解决办法二:

首先停掉Slave服务:slave stop
到主服务器上查看主机状态:
记录File和Position对应的值

进入master

mysql> show master status;
+----------------------+----------+--------------+------------------+
| File                 | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+----------------------+----------+--------------+------------------+
| localhost-bin.000094 | 33622483 |              |                  | 
+----------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

 

然后到slave服务器上执行手动同步:

mysql> change master to 
> master_host='master_ip',
> master_user='user', 
> master_password='pwd', 
> master_port=3306, 
> master_log_file='bin.000130', 
> master_log_pos=33622483 
;
1 row in set (0.00 sec)
mysql> start slave ;
1 row in set (0.00 sec)

可能会报错:log_file 不存在,这是需要查看 从数据库服务器中mysql的 log文件目录下,master_log_file 是否存在? 不存在时,直接从主数据服务器中复制过来即可;

mysql> show slave status\G
*************************** 1. row ***************************
........
            Master_Log_File: localhost-bin.000094
        Read_Master_Log_Pos: 33768775
             Relay_Log_File: localhost-relay-bin.000537
              Relay_Log_Pos: 1094034
      Relay_Master_Log_File: localhost-bin.000094
           Slave_IO_Running: Yes
          Slave_SQL_Running: Yes
            Replicate_Do_DB:

注意:最好把主表锁表,手动同步才能正确

【图文详解】参考:https://www.jianshu.com/p/f704af1deb5c

 

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