大橙子网站建设,新征程启航
为企业提供网站建设、域名注册、服务器等服务
这篇文章将为大家详细讲解有关如何解决MySQL中user表没有的问题,小编觉得挺实用的,因此分享给大家做个参考,希望大家阅读完这篇文章后可以有所收获。
目前创新互联建站已为数千家的企业提供了网站建设、域名、网络空间、成都网站托管、企业网站设计、玉泉网站维护等服务,公司将坚持客户导向、应用为本的策略,正道将秉承"和谐、参与、激情"的文化,与客户和合作伙伴齐心协力一起成长,共同发展。
mysql user表没有了的解决办法:1、在“[mysqld]”中添加“skip-grant-tables”;2、编辑my.cnf配置文件,添加“sql_mode=NO_ENGINE_SUBSTITUTION”;3、重启mysql服务。
本文操作环境:Windows7系统,mysql5.5版,Dell G3电脑。
mysql 忘记密码,重置密码,mysql.user表为空的解决办法:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
修改mysql配置文件my.cnf:
vim /etc/my.cnf
在[mysqld]中添加
skip-grant-tables
重启mysql服务,用空密码直接登录,查询用户表,有结果则按如下步骤修改,结果为空直接最后的解决办法
mysql> select Host,User,authentication_string from mysql.user; +-----------+---------------+-------------------------------------------+ | Host | User | authentication_string | +-----------+---------------+-------------------------------------------+ | localhost | root | *6A7A490FB9DC8C33C2B025A91737077A7E9CC5E5 | | localhost | mysql.session | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | | localhost | mysql.sys | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | | % | root | *6A7A490FB9DC8C33C2B025A91737077A7E9CC5E5 | +-----------+---------------+-------------------------------------------+ 4 rows in set (0.00 sec)
修改对应用户的密码
# 重置密码为 123456 mysql> update mysql.user set authentication_string=password('123456') where user='root' Query OK, 2 rows affected, 1 warning (0.00 sec) Rows matched: 2 Changed: 2 Warnings: 1 # 刷新权限,使配置生效 mysql> FLUSH PRIVILEGES; Query OK, 0 rows affected (0.00 sec) # 退出 mysql> quit Bye
取消或注释掉my.cnf配置文件添加的选项 skip-grant-tables ,重启mysql服务,搞定收工。
mysql> select Host,User,authentication_string from mysql.user; Empty set (0.00 sec) # 退出登陆 mysql> exit Bye
编辑my.cnf配置文件,添加或修改下面两项(我这没有sql_mode项):
sql_mode=NO_ENGINE_SUBSTITUTION skip-grant-tables
停止mysql服务,启动数据库的安全模式:mysqld_safe &
使用root 空密码连接数据库: mysql -uroot -p
插入root用户数据
mysql> insert into mysql.user(Host,User,authentication_string) values("%","root",password("123456")); Query OK, 1 row affected, 4 warnings (0.00 sec)
再次查询mysql.user表,会报错
mysql> select Host,User,authentication_string from mysql.user; ERROR 1194 (HY000): Table 'user' is marked as crashed and should be repaired
需要修复mysql.user表
mysql> REPAIR TABLE mysql.user; +------------+--------+----------+-------------------------------------------------+ | Table | Op | Msg_type | Msg_text | +------------+--------+----------+-------------------------------------------------+ | mysql.user | repair | info | Wrong bytesec: 113-108- 95 at 396; Skipped | | mysql.user | repair | info | Found block that points outside data file at 32 | | mysql.user | repair | info | Found block that points outside data file at 36 | | mysql.user | repair | info | Found block that points outside data file at 40 | | mysql.user | repair | info | Found block that points outside data file at 44 | | mysql.user | repair | info | Found block that points outside data file at 48 | | mysql.user | repair | info | Found block that points outside data file at 52 | | mysql.user | repair | info | Found block that points outside data file at 56 | | mysql.user | repair | info | Found block that points outside data file at 60 | | mysql.user | repair | warning | Number of rows changed from 4 to 3 | | mysql.user | repair | status | OK | +------------+--------+----------+-------------------------------------------------+ 11 rows in set (0.64 sec) # 再次查询user表 mysql> select Host,User,authentication_string from mysql.user; +-----------+---------------+-------------------------------------------+ | Host | User | authentication_string | +-----------+---------------+-------------------------------------------+ | localhost | mysql.session | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | | localhost | mysql.sys | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | | % | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 | +-----------+---------------+-------------------------------------------+ 3 rows in set (0.00 sec)
修改root用户的权限:
update mysql.user set `Select_priv` = 'Y', `Insert_priv` = 'Y', `Update_priv` = 'Y', `Delete_priv` = 'Y', `Create_priv` = 'Y', `Drop_priv` = 'Y', `Reload_priv` = 'Y', `Shutdown_priv` = 'Y', `Process_priv` = 'Y', `File_priv` = 'Y', `Grant_priv` = 'Y', `References_priv` = 'Y', `Index_priv` = 'Y', `Alter_priv` = 'Y', `Show_db_priv` = 'Y', `Super_priv` = 'Y', `Create_tmp_table_priv` = 'Y', `Lock_tables_priv` = 'Y', `Execute_priv` = 'Y', `Repl_slave_priv` = 'Y', `Repl_client_priv` = 'Y', `Create_view_priv` = 'Y', `Show_view_priv` = 'Y', `Create_routine_priv` = 'Y', `Alter_routine_priv` = 'Y', `Create_user_priv` = 'Y', `Event_priv` = 'Y', `Trigger_priv` = 'Y', `Create_tablespace_priv` = 'Y' where user='root'; # 更新权限 mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) # 退出登陆 mysql> exit Bye
退出mysql,将my.cnf配置文件的修改恢复
结束mysqld_safe 进程:pkill mysql
启动mysql服务: systemctl start mysql
问题解决!
关于“如何解决mysql中user表没有的问题”这篇文章就分享到这里了,希望以上内容可以对大家有一定的帮助,使各位可以学到更多知识,如果觉得文章不错,请把它分享出去让更多的人看到。