今天在測試新的搜索技術時,檢查數據庫發現一臺MySQL Slave未和主機同步,查看Slave狀態:
mysql> show slave status\G
Slave_IO_Running: Yes
Slave_SQL_Running: No
Last_Errno: 1062
....
Seconds_Behind_Master:NULL
原因:
1.程序可能在slave上進行了寫操作
2.也可能是slave機器重起后,事務回滾造成的.

解決辦法I:
1.首先停掉Slave服務:slave stop

2.到主服務器上查看主機狀態:
記錄File和Position對應的值。
mysql> show master status;
+------------------+-----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+-----------+--------------+------------------+
| mysql-bin.000020 | 135617781 | | |
+------------------+-----------+--------------+------------------+
1 row in set (0.00 sec)

3.到slave服務器上執行手動同步:
mysql> change master to?
> master_host='master_ip',
> master_user='user',?
> master_password='pwd',?
> master_port=3307,?
> master_log_file='mysql-bin.000020',?
> master_log_pos=135617781;
1 row in set (0.00 sec)

#我執行的sql

mysql> change master to?? master_host='192.168.10.14',? master_user='repl',? master_password='repl', master_port=3306,? master_log_file='mysql-bin.000006',? master_log_pos=98;


mysql> slave start;
1 row in set (0.00 sec)
再次查看slave狀態發現:
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
...
Seconds_Behind_Master: 0

解決辦法II:
mysql> slave stop;
mysql> set GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
mysql> slave start;

?

?

source:http://java221.iteye.com/blog/686284