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您正在查看:2012年2月
mysql主从关于函数过程同步问题
February 21, 2012
发现mysql主从同上步 对于函数过程总是出错 MySQL创建函数问题分析: 根据系统提示,导致该错误的原因可能是一个安全设置方面的配置,查手册log_bin_trust_function_creators参数缺省0,是不 允许function的同步的。 一般我们在配置repliaction的时候,都忘记关注这个参数,这样在master更新funtion后,slave就会报告错误,然后slave stoped。 MySQL创建函数问题处理过程: 登陆mysql数据库 > set global log_bin_trust_function_creators = 1; > start slave; 跟踪mysql的启动日志,slave正常运行,问题解决。 持续跟踪,经过一个晚上,bin-relay-log的数据全部同步完毕。 直接在my.cnf里面添加 log_bin_trust_function_creators = 1 ======================================================================== 创建function时 出错信息: ERROR 1418 (HY000): This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled (you *might* want to use the less safe log_bin_trust_function_creators variable) 原因: 这是我们开启了bin-log, 我们就必须指定我们的函数是否是 1 DETERMINISTIC 不确定的 2 NO SQL 没有SQl语句,当然也不会修改数据 3 READS SQL DATA 只是读取数据,当然也不会修改数据 4 MODIFIES SQL DATA 要修改数据 5 CONTAINS SQL 包含了SQL语句 其中在function里面,只有 DETERMINISTIC, NO SQL 和 READS SQL DATA 被支持。如果我们开启了 bin-log, 我们就必须为我们的function指定一个参数。 解决方法: SQL code mysql>show variables like '%func%'; +---------------------------------+-------+ |Variable_name |Value| +---------------------------------+-------+ |log_bin_trust_function_creators|OFF | +---------------------------------+-------+ 1 row in set (0.00sec) mysql>set global log_bin_trust_function_creators=1; Query OK,0 rows affected (0.00sec) mysql>show variables like '%func%'; +---------------------------------+-------+ |Variable_name |Value| +---------------------------------+-------+ |log_bin_trust_function_creators|ON | +---------------------------------+-------+ 1 row in set (0.00sec) mysql> 试过了,这个方法很有效的。 之前修改了my.ini文件,在mysqld下面加上了log_bin_trust_function_creators=1,都没好使。
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