悲催的昨晚刚躺在床上准备睡觉，同事给我打电话说营销数据库主从不同步了,我靠.咋就这么悲剧呢! 废话不说，速度开电脑拨VPN解决.
1、登录从库查看主从同步状态，确认是否不同步
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 192.168.40.111
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000610
Read_Master_Log_Pos: 343903964
Relay_Log_File: relaylog.000577
Relay_Log_Pos: 343904041
Relay_Master_Log_File: mysql-bin.000610
Slave_IO_Running: No
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 343903895
Relay_Log_Space: 343904405
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 1236
Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'binlog truncated in the middle of event; consider out of disk space on master; the first event 'mysql-bin.000610' at 343903964, the last event read from '/log/binlog/mysql-bin.000610' at 343903964, the last byte read from '/log/binlog/mysql-bin.000610' at 343904299.'
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 26
1 row in set (0.00 sec)
mysql> exit
Bye
错误信息明确的说binlog被截断了,去看看343903964这个点到底是在做什么操作.
2、查看从库的错误日志
[root@YB-db-112~]# tail -f /log/error.log
140116 13:32:40 [ERROR] Error reading packet from server: binlog truncated in the middle of event; consider out of disk space on master; the first event 'mysql-bin.000605' at 248481943, the last event read from '/log/binlog/mysql-bin.000610' at 343903964, the last byte read from '/log/binlog/mysql-bin.000610' at 343904299. ( server_errno=1236)
140116 13:32:40 [ERROR] Slave I/O: Got fatal error 1236 from master when reading data from binary log: 'binlog truncated in the middle of event; consider out of disk space on master; the first event 'mysql-bin.000605' at 248481943, the last event read from '/log/binlog/mysql-bin.000610' at 343903964, the last byte read from '/log/binlog/mysql-bin.000610' at 343904299.', Error_code: 1236
140116 13:32:40 [Note] Slave I/O thread exiting, read up to log 'mysql-bin.000610', position 343903964
140116 14:11:28 [Note] Error reading relay log event: slave SQL thread was killed
140116 14:22:35 [Note] Slave I/O thread: connected to master 'repl@192.168.40.111:3306',replication started in log 'mysql-bin.000610' at position 343903964
140116 14:22:35 [Note] Slave SQL thread initialized, starting replication in log 'mysql-bin.000610' at position 343903895, relay log '/log/relaylog/relaylog.000577' position: 343904041
140116 14:22:35 [ERROR] Error reading packet from server: binlog truncated in the middle of event; consider out of disk space on master; the first event 'mysql-bin.000610' at 343903964, the last event read from '/log/binlog/mysql-bin.000610' at 343903964, the last byte read from '/log/binlog/mysql-bin.000610' at 343904299. ( server_errno=1236)
140116 14:22:35 [ERROR] Slave I/O: Got fatal error 1236 from master when reading data from binary log: 'binlog truncated in the middle of event; consider out of disk space on master; the first event 'mysql-bin.000610' at 343903964, the last event read from '/log/binlog/mysql-bin.000610' at 343903964, the last byte read from '/log/binlog/mysql-bin.000610' at 343904299.', Error_code: 1236
140116 14:22:35 [Note] Slave I/O thread exiting, read up to log 'mysql-bin.000610', position 343903964
140116 14:22:56 [Note] Error reading relay log event: slave SQL thread was killed
查看磁盘空间
[root@YB-db-111~]# df -h
文件系统 容量 已用 可用 已用%% 挂载点
/dev/sda5 39G 4.2G 33G 12% /
tmpfs 32G 4.0K 32G 1% /dev/shm
/dev/sda3 49G 5.6G 41G 13% /backup
/dev/sda1 194M 28M 157M 15% /boot
/dev/sda2 97G 73G 19G 80% /log
/dev/sda7 1.2T 44G 1.1T 4% /mysql
3、尝试更改Position位置恢复复制
mysql>change master to master_host='192.168.40.111', master_port=3306, master_user='repl', master_password='123456', master_log_file='mysql-bin.000610', master_log_pos=343903964;
mysql> slave start;
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 192.168.40.111
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000610
Read_Master_Log_Pos: 343903964
Relay_Log_File: relaylog.000577
Relay_Log_Pos: 343904041
Relay_Master_Log_File: mysql-bin.000610
Slave_IO_Running: No
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 343903895
Relay_Log_Space: 343904405
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 1236
Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'binlog truncated in the middle of event; consider out of disk space on master; the first event 'mysql-bin.000610' at 343903964, the last event read from '/log/binlog/mysql-bin.000610' at 343903964, the last byte read from '/log/binlog/mysql-bin.000610' at 343904299.'
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 26
1 row in set (0.00 sec)
mysql> exit
Bye
-_- 我去.坑爹,还是不行啊...郁闷
4、查看Master的binlog日志，按照错误点的标记去主库的日志中查找
[root@YB-db-111~]# mysqlbinlog --no-defaults --start-position=343903964 /log/binlog/mysql-bin.000610
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;
/*!40019 SET @@session.max_insert_delayed_threads=0*/;
/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;
DELIMITER /*!*/;
# at 4
#140115 14:33:48 server id 26 end_log_pos 107 Start: binlog v 4, server v 5.5.32-log created 140115 14:33:48
BINLOG '
gCTKUg7bCCCCCCCCCCCCCQANS41LjMyLWxvZwXXXXXXXXXXXXXXXXXXXXXXXXXX
AAAAAAAAAAAAAAAAAAAAAAAAEzgNSAgAEgAEBAQEEgAAVAAEGhgAAAAICAgCAA==
'/*!*/;
ERROR: Error in Log_event::read_log_event(): 'read error', data_len: 364, event_type: 2
ERROR: Could not read entry at offset 343903964: Error in log format or read error.
DELIMITER ;
# End of log file
ROLLBACK /* added by mysqlbinlog */;
/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;
[root@YB-db-111~]# mysqlbinlog --no-defaults /log/binlog/mysql-bin.000610 > 610.txt
ERROR: Error in Log_event::read_log_event(): 'read error', data_len: 364, event_type: 2
ERROR: Could not read entry at offset 343903964: Error in log format or read error.
[root@YB-db-111~]# vim 610.txt
# at 343903435
#140115 14:35:46 server id 26 end_log_pos 343903504 Query thread_id=19871 exec_time=0 error_code=0
SET TIMESTAMP=1389767746/*!*/;
BEGIN
/*!*/;
# at 343903504
#140115 14:35:46 server id 26 end_log_pos 343903868 Query thread_id=19871 exec_time=0 error_code=0
SET TIMESTAMP=1389767746/*!*/;
UPDATE way........................................
/*!*/;
# at 343903868
#140115 14:35:46 server id 26 end_log_pos 343903895 Xid = 536002
COMMIT/*!*/;
# at 343903895
#140115 14:35:46 server id 26 end_log_pos 343903964 Query thread_id=19870 exec_time=0 error_code=0
SET TIMESTAMP=xxxxxxxxx/*!*/;
BEGIN
/*!*/;
DELIMITER ;
# End of log file
ROLLBACK /* added by mysqlbinlog */;
/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;
这是在mysql-bin.000610的最后一个地方,显示开启了一个事务,但是事务没有继续往后执行，我已经把max_binlog_size设置的1G了,查看mysql官网的说明,当binlog最后遇到一个大事务时会将日志记录在这个日志,而不会跨binlog记录一个事务,于是我继续查看看mysql-bin.000611的日志头内容；
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;
/*!40019 SET @@session.max_insert_delayed_threads=0*/;
/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;
DELIMITER /*!*/;
# at 4
#140116 14:19:08 server id 26 end_log_pos 107 Start: binlog v 4, server v 5.5.32-log created 140116 14:19:08 at startup
BINLOG '
3HnXUg8aAAAAZwAAAGsAAAAAAAQANS41LjMyLWxvZwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAADceddSEzgNAAgAEgAEBAQEEgAAVAAEGggAAAAICAgCAA==
'/*!*/;
# at 107
#140115 14:34:48 server id 10 end_log_pos 166 Query thread_id=211882628 exec_time=85473 error_code=0
SET TIMESTAMP=1389767688/*!*/;
SET @@session.pseudo_thread_id=211882628/*!*/;
SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1/*!*/;
SET @@session.sql_mode=0/*!*/;
SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/;
/*!\C utf8 *//*!*/;
SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=33/*!*/;
SET @@session.lc_time_names=0/*!*/;
SET @@session.collation_database=DEFAULT/*!*/;
BEGIN
/*!*/;
# at 166
# at 243
mysql-bin.000611这个日志的开头也没有说明是继续上一个binlog的最后一个事务.
5、从新change master指定新binlog恢复主从同步
mysql> change master to master_host='192.168.40.111', master_port=3306, master_user='repl', master_password='123456', master_log_file='mysql-bin.000611', master_log_pos=0;
mysql> slave start;
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.40.111
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000611
Read_Master_Log_Pos: 7180578
Relay_Log_File: relaylog.000005
Relay_Log_Pos: 1302
Relay_Master_Log_File: mysql-bin.000611
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 7180578
Relay_Log_Space: 7181019
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 26
1 row in set (0.00 sec)
OK了.终于可以了.关机睡觉..^_^
顺便提一个问题哪位大侠知道告诉我,Google很多说是mysqlbinlog版本问题.关于mysqlbinlog报如下错误
ERROR: Error in Log_event::read_log_event(): 'read error', data_len: 364, event_type: 2
ERROR: Could not read entry at offset 343903964: Error in log format or read error.
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