首页 / 数据库 / MySQL / MySQL中如何禁用binlog中的语句
MySQL中如何禁用binlog中的语句2014-10-28MySQL复制是异步的,也就是说是非同步的过程,它不会校验数据库中数据的一致性,只要SQL语法正确并且没有错误就能成功执行MASTERtest 12:20:40>create table tab01-> (id int(10) primary key ,-> name varchar(20));Query OK, 0 rows affected (0.03 sec)MASTERtest 12:21:32>MASTERtest 12:21:49>show master status;+----------------------+----------+--------------+------------------+| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |+----------------------+----------+--------------+------------------+| binlog-master.000004 | 338 | | |+----------------------+----------+--------------+------------------+1 row in set (0.00 sec)MASTERtest 12:21:52>[root@mynode1 mysql]# /service/mysql/bin/mysqlbinlog binlog-master.000004|tail -13# at 213#140130 12:21:32 server id 1 end_log_pos 338 Query thread_id=3 exec_time=0 error_code=0use `test`/*!*/;SET TIMESTAMP=1391055692/*!*/;create table tab01(id int(10) primary key ,name varchar(20))/*!*/;DELIMITER ;# End of log fileROLLBACK /* added by mysqlbinlog */;/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;可以看到binlog里记录了这条语句,可以通过sql_log_bin参数来控制是否捕获binlog中的操作MASTERtest 12:25:32>set sql_log_bin=0;Query OK, 0 rows affected (0.00 sec)MASTERtest 12:25:37>alter table tab01 add index(name);Query OK, 0 rows affected (0.05 sec)Records: 0 Duplicates: 0 Warnings: 0MASTERtest 12:26:04>set sql_log_bin=1;Query OK, 0 rows affected (0.00 sec)MASTERtest 12:26:07>MASTERtest 12:26:08>show create table tab01G*************************** 1. row ***************************Table: tab01Create Table: CREATE TABLE `tab01` (id` int(10) NOT NULL,name` varchar(20) DEFAULT NULL,PRIMARY KEY (`id`),KEY `name` (`name`)) ENGINE=InnoDB DEFAULT CHARSET=utf81 row in set (0.00 sec)[root@mynode1 mysql]# /service/mysql/bin/mysqlbinlog binlog-master.000004/*!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#140130 12:08:05 server id 1 end_log_pos 107 Start: binlog v 4, server v 5.5.34-log created 140130 12:08:05 at startup# Warning: this binlog is either in use or was not closed properly.ROLLBACK/*!*/;BINLOG "JdDpUg8BAAAAZwAAAGsAAAABAAQANS41LjM0LWxvZwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAl0OlSEzgNAAgAEgAEBAQEEgAAVAAEGggAAAAICAgCAA=="/*!*/;# at 107本栏目更多精彩内容:http://www.bianceng.cn/database/MySQL/#140130 12:13:45 server id 1 end_log_pos 213 Query thread_id=3 exec_time=0 error_code=0use `tmp`/*!*/;SET TIMESTAMP=1391055225/*!*/;SET @@session.pseudo_thread_id=3/*!*/;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/*!*/;create table tab_02 as select * from tab_tmp/*!*/;# at 213#140130 12:21:32 server id 1 end_log_pos 338 Query thread_id=3 exec_time=0 error_code=0use `test`/*!*/;SET TIMESTAMP=1391055692/*!*/;create table tab01(id int(10) primary key ,name varchar(20))/*!*/;DELIMITER ;# End of log fileROLLBACK /* added by mysqlbinlog */;/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;[root@mynode1 mysql]#可以将此DDL语句在slave库执行SLAVEtest 12:26:39>alter table tab01 add index(name);Query OK, 0 rows affected (0.04 sec)Records: 0 Duplicates: 0 Warnings: 0SLAVEtest 12:27:57>show create table tab01G*************************** 1. row ***************************Table: tab01Create Table: CREATE TABLE `tab01` (id` int(10) NOT NULL,name` varchar(20) DEFAULT NULL,PRIMARY KEY (`id`),KEY `name` (`name`)) ENGINE=InnoDB DEFAULT CHARSET=utf81 row in set (0.00 sec)SLAVEtest 12:28:10>在大型master-slave环境下执行DDL语句时,在每一台slave上手动去执行DDL命令能绕过MySQL数据复制单线程对某些命令的限制