为了服务器更好的安全特将mysql服务器同步一下,show slave status\G出现了Slave_IO_Running: No 错误,特整理了下,方便以后配置
今天在测试mysql是否同步时,检查数据库发现一台MySQL Slave未和主机同步,查看Slave状态: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上进行了写操作
2.也可能是slave机器重起后,事务回滚造成的.
解决办法I:
1.首先停掉Slave服务:slave stop
2.到主服务器上查看主机状态:
记录File和Position对应的值。
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服务器上执行手动同步:
代码如下:
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)
mysql> slave start;
1 row in set (0.00 sec)
再次查看slave状态发现:
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
...
Seconds_Behind_Master: 0
解决办法II:
mysql> slave stop;
mysql> set GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
mysql> slave start;
自己的使用体会:方法一是强制性从某一个点开始同步,会有部分没有同步的数据丢失,后续主服务器上删除记录同步也会有一些错误信息,不会影响使用.方法二不一定会有效果.

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