1.关闭数据库mysql

#systemctl stop mysqld.service

2.进入安全模式
#mysqld_safe --user=root --skip-grant-tables --skip-networking

3.登录mysql
#mysql -uroot

4.登录后先刷新
>flush privileges;

5.解锁用户
>ALTER USER ‘root’@’localhost’ ACCOUNT UNLOCK;

//ALTER USER ‘root’@’%’ ACCOUNT UNLOCK;

>update mysql.user set account_locked=’N’ where user=’root’;

提交命令
>commit;

6.重新启动mysql
#systemctl start mysqld.service

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