问:刚刚新安装的MySQL,提示下面信息,无法登入,怎么回事? [root@imysql mysql]# mysql mysqlERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) 答:数据库已经执行过 mysql_install_db 初始化了,按理说应该没问题。
问:刚刚新安装的MySQL,提示下面信息,无法登入,怎么回事?
[root@imysql mysql]# mysql mysql ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
答:数据库已经执行过 mysql_install_db 初始化了,按理说应该没问题。经过排查,发现 $datadir 的 mysql 数据库目录的权限模式为:
drwx------ 2 mysql root 4096 Jan 9 20:22 mysql
看起来没有问题。检查错误日志,发现一行:
130109 21:04:23 [Warning] Bootstrap mode disables GTIDs. Bootstrap mode should only be used by mysql_install_db which initializes the MySQL data directory and creates system tables. ERROR: 1785 Updates to non-transactional tables are forbidden when DISABLE_GTID_UNSAFE_STATEMENTS = 1. 130109 21:04:23 [ERROR] Aborting
同时,mysql库下的user表空间文件显示:
-rw-rw---- 1 mysql mysql 10684 Jan 9 20:22 user.frm -rw-rw---- 1 mysql mysql 0 Jan 9 20:22 user.MYD -rw-rw---- 1 mysql mysql 1024 Jan 9 20:22 user.MYI
可以看到,user表空间数据文件大小为0。
看起来应该是和启用GTID模式有一定关系了。仔细检查下,发现和GTID相关的选项有:
gtid_mode = ON binlog_format = mixed disable-gtid-unsafe-statements = 1 log-bin=binlog
这是因为在启用GTID模式下,如果对非事务表更新时,无法保证事务一致性,因此设置 disable-gtid-unsafe-statements = 1 确保主从数据一致性。
解决方案:
这时候可以将选项 disable-gtid-unsafe-statements 的值修改为 0。也可以同时关闭 GTID 、 binlog 选项,初始化完毕后再打开。
#gtid_mode = ON #log-bin=binlog
或
disable-gtid-unsafe-statements = 0
技术相关:
MySQL基础知识
MySQL FAQ
原文地址:[MySQL FAQ]系列 -- 启用GTID & binlog新安装完的MySQL提示无法登录, 感谢原作者分享。

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