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

    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

[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