mysql root设置密码 linux

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成功方案

mysqld_safe --user=mysql --skip-grant-tables --skip-networking &

[root@localhost ~]# mysql -u root mysql

mysql> update user set authentication_string=PASSWORD('passw0rd') where user='root';

[root@localhost ~]# mysql -u root -p

Enter password:

登陆之后还需之行下面的语句修改密码，使其符合规则

alter user 'root'@'localhost' IDENTIFIED BY 'Passw0rd@' PASSWORD EXPIRE;

或者这一句

SET PASSWORD = PASSWORD('Passw0rd@');

使mysql的root用户可以远程链接：

mysql -u root –p

mysql>use mysql;

mysql>update user set host = '%' where user = 'root';

mysql>select host, user from user;

FLUSH PRIVILEGES

失败方案

创建mysql-init文件，内容如下：

ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass';

然后执行 sudo mysqld_safe --init-file=mysql-init &

然后删除mysql－init