Linux下重新设置 MySQL 的密码

[root@localhost ~]# vim /etc/my.cnf

                    [mysqld]
skip
                    -grant-tables
                

[root@localhost lib]# systemctl restart mysqld.service

                    //使用名字叫 mysql（或者自己创建过） 数据库
mysql>
                    
                         use mysql;
Reading table information 
                    for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
//这里我把 账号 root 密码设置为 root
mysql> update mysql.user set authentication_string=password(‘root‘) where user=‘root‘ ;
Query OK, 1 row affected, 1 warning (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 1
// 刷新
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> quit
Bye

[root@localhost /]# mysql -uroot -proot
//注意：这里一般直接输入密码登录，可能会不安全
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or g.
Your MySQL connection id is 6
Server version: 5.7.30 MySQL Community Server (GPL)

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