这是mysql关于主从复制的主库的配置相关内容:
- server-id = 1
- log-bin=/mysql_log/binlog/bin-log
- slave-skip-errors=1062,1205
- max_binlog_size = 500M
- binlog_cache_size = 128K
- relay-log =/mysql_log/relaylog/relaylog
- log-slave-updates
之前搭建的MySQL主从复制出现问题,不能正常同步,查看日志,发下有以下错误:
- 120726 13:20:36 Could not use /mysql_log/relaylog/relaylog for logging (error 2). Turning logging off for the whole duration of the MySQL server process. To turn it on again: fix the cause, shutdown the MySQL server and restart it.
- 120726 13:20:36 Failed in open_log() called from init_relay_log_info()
- 120726 13:20:36 Failed to initialize the master info structure
- 120726 13:20:36 Could not use /mysql_log/binlog/bin-log for logging (error 2). Turning logging off for the whole duration of the MySQL server process. To turn it on again: fix the cause, shutdown the MySQL server and restart it.
- 120801 17:53:00 Failed to open the relay log ‘/mysql_log/relaylog/relaylog.036’ (relay_log_pos 4)
- 120801 17:53:00 Could not find target log during relay log initialization
- 120801 17:53:00 Failed to initialize the master info structure
1、关闭mysql
- [root@111_ddb ~]# mysqladmin -p shutdown
- Enter password:
- [root@111_ddb data]# tail -f /home/mysql/data/111_ddb.err
- 120801 17:56:57 /usr/local/mysql/libexec/mysqld: Normal shutdown
- 120801 17:56:58 InnoDB: Starting shutdown…
- 120801 17:57:30 InnoDB: Shutdown completed
- 120801 17:57:30 /usr/local/mysql/libexec/mysqld: Shutdown Complete
- 120801 17:57:30 mysqld ended
2、删除主库上关于binlog日志的记录文件,msater.info 和 relay-log.info
- [root@111_ddb ~]# cd /home/mysql/data/
- [root@111_ddb data]# ls
- 111_ddb.err 111_ddb-slow.log ddb ibdata1 ib_logfile1 master.info mysql_dd slow.log test
- 111_ddb.pid adb ib_arch_log_0000000000 ib_logfile0 ib_logfile2 mysql relay-log.info tdb
- [root@111_ddb data]# ls *info
- master.info relay-log.info
- [root@111_ddb data]# ls
- 111_ddb.err 111_ddb-slow.log ddb ibdata1 ib_logfile1 master.info mysql_dd slow.log test
- 111_ddb.pid adb ib_arch_log_0000000000 ib_logfile0 ib_logfile2 mysql relay-log.info tdb
- [root@111_ddb data]# rm -f master.info relay-log.info
- [root@111_ddb data]# cd /mysql_log/binlog/
- [root@111_ddb binlog]# ls
- bin-log.001 bin-log.index
- [root@111_ddb binlog]# rm -f *
- [root@111_ddb binlog]# cd ../relaylog/
- [root@111_ddb relaylog]# ls
- relaylog.001 relaylog.index
- [root@111_ddb relaylog]# rm -f *
- [root@111_ddb relaylog]# cd ../binlog/
3、开启mysql
- [root@111_ddb ~]# /usr/local/mysql/bin/mysqld_safe –defaults-file=/usr/local/mysql/etc/innodb.cnf –datadir=/home/mysql/data –user=mysql &
- [root@111_ddb data]# tail -f /home/mysql/data/111_ddb.err
- 120801 17:58:21 mysqld started
- 120801 17:58:23 InnoDB: Started
- /usr/local/mysql/libexec/mysqld: ready for connections.
- Version: ‘4.0.26-log’ socket: ‘/tmp/mysql.sock’ port: 3306 Source distribution
- [root@111_ddb binlog]# ll
- total 13080
- -rw-rw—- 1 mysql mysql 13365795 Aug 1 17:59 bin-log.001
- -rw-rw—- 1 mysql mysql 30 Aug 1 17:58 bin-log.index
- [root@111_ddb binlog]# ll
- total 13828
- -rw-rw—- 1 mysql mysql 14132046 Aug 1 17:59 bin-log.001
- -rw-rw—- 1 mysql mysql 30 Aug 1 17:58 bin-log.index
- [root@111_ddb binlog]# ll
- total 15020
- -rw-rw—- 1 mysql mysql 15355877 Aug 1 17:59 bin-log.001
- -rw-rw—- 1 mysql mysql 30 Aug 1 17:58 bin-log.index
通过日志和查看binlog文件,说明主库的配置恢复正常
本文出自 “开源一员” 博客,出处http://521cto.blog.51cto.com/950229/951776
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