欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

MySQL mysqlbinlog 访问mysql-bin日志出错

程序员文章站 2022-05-06 12:23:12
问题 mysqlbinlog v v base64 output=DECODE ROWS mysql bin.000166 | less 查看当前使用的mysqlbinlog文件位置 which mysqlbinlog /usr/bin/mysqlbinlog ll /usr/bin/mysqlbi ......

问题

mysqlbinlog -v -v --base64-output=decode-rows mysql-bin.000166 | less

error: error in log_event::read_log_event(): 'found invalid event in binary log', data_len: 111, event_type: 35
/*!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
#190408 18:15:19 server id 311948559  end_log_pos 123 crc32 0x56e12e5d  start: binlog v 4, server v 5.7.21-log created 190408 18:15:19
# warning: this binlog is either in use or was not closed properly.
binlog '
nx+rxa8p9zcsdwaaahsaaaabaaqans43ljixlwxvzwaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaezgnaagaegaebaqeegaaxwaegggaaaaicagcaaaacgokkioaejqa
av0u4vy=
'/*!*/;
delimiter ;
# end of log file
rollback /* added by mysqlbinlog */;
/*!50003 set completion_type=@old_completion_type*/;
/*!50530 set @@session.pseudo_slave_mode=0*/;

查看当前使用的mysqlbinlog文件位置

which mysqlbinlog
/usr/bin/mysqlbinlog

ll /usr/bin/mysqlbinlog
-rwxr-xr-x 1 root root 3259000 6月 10 2014 /usr/bin/mysqlbinlog
该myqlbinlog在2014年就已经存在了,推测是该机器中自带的mariadb中的

版本信息

/usr/bin/mysqlbinlog --version
/usr/bin/mysqlbinlog ver 3.3 for linux at x86_64
/usr/bin/mysqlbinlog ver 3.3 for linux at x86_64
copyright (c) 2000, 2013, oracle, monty program ab and others.

dumps a mysql binary log in a format usable for viewing or for piping to
the mysql command line client.

查看当前运行的mysqld进程basedir

ps -ef | grep defaults | grep 3308 | awk '{print $8}'
/opt/mysql/base/5.7.21/bin/mysqld

版本信息

/opt/mysql/base/5.7.21/bin/mysqlbinlog -v
/opt/mysql/base/5.7.21/bin/mysqlbinlog ver 3.4 for linux-glibc2.12 at x86_64

删除原可执行文件mysqlbinlog,重新建立软链接

rm -r /usr/bin/mysqlbinlog
rm:是否删除普通文件 "/usr/bin/mysqlbinlog"?y

ln -s /opt/mysql/base/5.7.21/bin/mysqlbinlog /usr/bin

可正常使用

mysqlbinlog -v -v --base64-output=decode-rows mysql-bin.000166 | less

/*!50530 set @@session.pseudo_slave_mode=1*/;
/*!50003 set @old_completion_type=@@completion_type,completion_type=0*/;
delimiter /*!*/;
# at 4
#190408 18:15:19 server id 311948559  end_log_pos 123 crc32 0x56e12e5d  start: binlog v 4, server v 5.7.21-log created 190408 18:15:19
# warning: this binlog is either in use or was not closed properly.
# at 123

老版本mysql可执行文件却能正常运行

ll /usr/bin/mysql
-rwxr-xr-x 1 root root 3546584 6月 10 2014 /usr/bin/mysql

mysql --version
mysql ver 15.1 distrib 5.5.35-mariadb, for linux (x86_64) using readline 5.1

/opt/mysql/base/5.7.21/bin/mysql -uroot -p --socket=/datas/mysql/data/3308/mysqld.sock -e"select version()"
enter password:
+------------+
| version() |
+------------+
| 5.7.21-log |
+------------+

结论

  • 出现 error: error in log_event::read_log_event(): 'found invalid event in binary log', data_len: 111, event_type: 35 错误是由于当前使用的myqlbinlog可执行文件的版本和正在运行的mysqld进程basedir中mysqlbinlog的版本不一致导致的(版本低不能正常读取高版本的mysqld产生的mysql-bin文件,产生的mysql-bin文件有event老版本的myqlbinlog不能正常读取)

  • 低版本的mysql可执行文件能正常登陆高版本的mysqld