ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)(

Posted 2021-02-14 吕涵之的博客

centos7.5 登录数据库报错

问题：

[[email protected] ~]# mysql -uroot -p123
Warning: Using a password on the command line interface can be insecure.
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

原因：数据库中的root用户被误删除

解决方法：

方法一：

1)停止数据库
[[email protected] ~]# /etc/init.d/mysqld stop
2)跳过授权表，跳过网络启动数据库
[[email protected] ~]# mysqld_safe --skip-grant-tables --skip-networking &
3）连接数据库
[[email protected] ~]#  mysql
4）插入新root用户
insert into mysql.user values ('localhost','root',PASSWORD('123'),'Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','','','','',0,0,0,0,'mysql_native_password','','N');
5）重启MySQL
[[email protected] ~]# mysqladmin shutdown
[[email protected] ~]# /etc/init.d/mysqld start
Starting MySQL. SUCCESS! 
6）连接数据库
[[email protected] ~]# mysql -uroot -p123
mysql> 

方法二：

1)停止数据库
[[email protected] ~]# /etc/init.d/mysqld stop
2)跳过授权表，跳过网络启动数据库
[[email protected] ~]# mysqld_safe --skip-grant-tables --skip-networking &
3）连接数据库
[[email protected] ~]# mysql
4）刷新授权表
mysql> flush privileges;
5）创建root超级用户
mysql> grant all on *.* to [email protected]'localhost' identified by '123' with grant option;
6）重启MySQL
[[email protected] ~]# mysqladmin -uroot -p123 shutdown
[[email protected] ~]# /etc/init.d/mysqld start
7）登录数据库
[[email protected] ~]# mysql -uroot -p123
mysql>