MySQL read_log_event(): 'Found invalid event in binary log'

怼烎@ 2022-08-06 03:07 80阅读 0赞

MySQL以简单易用著称，在同一个服务器上可以安装N个不同的版本，方便测试，迁移等等。此外，对于大多数Linux系统，集成了mysql，缺省会被安装。因此多版本的问题导致一些莫名的错误也是时有发生。最近在提取binlog日志时，碰到了一个read\_log\_event，Found invalid event in binary log。经查发现原来是mysqlbinlog版本问题引发的。如下文，供大家参考。

1、故障描述  
\[root@HKBO bak\]\# mysqlbinlog --start-datetime="2014-12-15 00:30:00" mysql-bin.000399bk |more  
ERROR: Error in Log\_event::read\_log\_event(): 'Found invalid event in binary log', data\_len: 376, event\_type: 19  
/\*!40019 SET @@session.max\_insert\_delayed\_threads=0\*/;  
/\*!50003 SET @OLD\_COMPLETION\_TYPE=@@COMPLETION\_TYPE,COMPLETION\_TYPE=0\*/;  
DELIMITER /\*!\*/;  
\# at 4  
\#141213 21:05:01 server id 11  end\_log\_pos 120  Start: binlog v 4, server v 5.6.12-log created 141213 21:05:01  
\# Warning: this binlog is either in use or was not closed properly.  
DELIMITER ;  
\# End of log file  
ROLLBACK /\* added by mysqlbinlog \*/;  
/\*!50003 SET COMPLETION\_TYPE=@OLD\_COMPLETION\_TYPE\*/;

2、故障分析与解决  
\#查看当前是哪一个mysqlbinlog文件  
\[root@HKBO bak\]\# which mysqlbinlog  
/usr/bin/mysqlbinlog

\#查看mysqlbinlog的版本，此时为3.2  
\[root@HKBO bak\]\# mysqlbinlog --version  
mysqlbinlog Ver 3.2 for redhat-linux-gnu at x86\_64  
\#Author : Leshami  
\#Blog   : [http://blog.csdn.net/leshami][http_blog.csdn.net_leshami]

\[root@HKBO bak\]\# whereis mysqlbinlog  
mysqlbinlog: /usr/bin/mysqlbinlog /usr/share/man/man1/mysqlbinlog.1.gz

\#此服务器的安装路径其实质如为/app/soft/mysql/，查看mysqlbinlog的版本为3.4版  
\[root@HKBO bak\]\# /app/soft/mysql/bin/mysqlbinlog --version  
/app/soft/mysql/bin/mysqlbinlog Ver 3.4 for Linux at x86\_64

\#下面使用正确路径的mysqlbinlog，此时成功  
\[root@HKBO bak\]\# /app/soft/mysql/bin/mysqlbinlog --start-datetime="2014-12-15 00:30:00" mysql-bin.000399bk |more  
/\*!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  
\#141213 21:05:01 server id 11  end\_log\_pos 120 CRC32 0xaafb2293         Start: binlog v 4, server v 5.6.12-log created 141213 21:05:01  
\# Warning: this binlog is either in use or was not closed properly.  
BINLOG '  
fTmMVA8LAAAAdAAAAHgAAAABAAQANS42LjEyLWxvZwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA  
AAAAAAAAAAAAAAAAAAAAAAAAEzgNAAgAEgAEBAQEEgAAXAAEGggAAAAICAgCAAAACgoKGRkAAZMi  
\+6o=  
'/\*!\*/;  
\# at 594054457

\#查看当前系统mysql的版本  
\# /app/soft/mysql/bin/mysql --version  
/app/soft/mysql/bin/mysql  Ver 14.14 Distrib 5.6.12, for Linux (x86\_64) using  EditLine wrapper

\#以下的为OS安装时缺省安装的版本  
\# rpm -qa |grep -i mysql  
mysql-5.0.95-3.el5

3、小结  
a、对于生产环境mysql的部署，建议在安装OS前不安装缺省的mysql或者安装后卸载缺省的mysql  
b、因需要存在多版本的情形，应考虑使用直接路径方式来执行相应的mysql命令行工具

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[http_blog.csdn.net_leshami]: http://blog.csdn.net/leshami
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[DBA_DBA]: /images/20220806/72897631ac2c49bfb105608ab7f0a063.png