在尝试了所有其他答案后，这是最后对我有用的:

sudo mysql -- It does not ask me for any password

-- Then in MariaDB/MySQL console:
update mysql.user set plugin = 'mysql_native_password' where User='root';
FLUSH PRIVILEGES;
exit;

我发现答案在博客文章解决:错误“访问拒绝用户' root ' @ ' localhost '”的MySQL - codementor。科技(媒介)。

修复macOS

Install MySQL from https://downloads.mysql.com/archives/community/ (8.x is the latest as on date, but ensure that the version is compatible with the macOS version) Give password for root (let <root-password> be the password) during installation (don't forget to remember the password!) Select Use Legacy Password Encryption option (that is what I had used and did not try for Use Strong Password Encryption option) Search and open MySQL.prefPane (use search tool) Select Configuration tab Click Select option of Configuration File Select /private/etc/my.cnf From terminal open a new or existing file with name /etc/my.cnf (vi /etc/my.cnf) add the following content: [mysqld] skip-grant-tables Restart mysqld as follows: ps aux | grep mysql kill -9 <pid1> <pid2> ... (grab pids of all MySQL related processes) mysqld gets restarted automatically Verify that the option is set by running the following from terminal: ps aux | grep mysql > mysql/bin/mysqld ... --defaults-file=/private/etc/my.cnf ... (output) Run the following command to connect (let mysql-<version>-macos<version>-x86_64 be the folder where MySQL is installed. To grab the actual folder, run ls /usr/local/ and copy the folder name): /usr/local/mysql-<version>-macos<version>-x86_64/bin/mysql -uroot -p<root-password>

在尝试了所有其他答案后，这是最后对我有用的:

sudo mysql -- It does not ask me for any password

-- Then in MariaDB/MySQL console:
update mysql.user set plugin = 'mysql_native_password' where User='root';
FLUSH PRIVILEGES;
exit;

我发现答案在博客文章解决:错误“访问拒绝用户' root ' @ ' localhost '”的MySQL - codementor。科技(媒介)。

'-p'参数不要求参数名和值之间有空格。

而不是

./mysqladmin -u root -p 'redacted'

Use

./mysqladmin -u root -p'redacted'

或者只是

./mysqladmin -u root -p

这将提示您输入密码。

打开并编辑/etc/my.cnf或/etc/mysql/my.cnf，具体取决于你的发行版。 在[mysqld]下添加skip-grant-tables 重新启动MySQL 你现在应该可以使用下面的命令MySQL -u root -p登录MySQL 运行mysql> flush特权; 设置新密码ALTER USER 'root'@'localhost' IDENTIFIED by 'NewPassword' 回到/etc/my.cnf，删除/comment skip-grant-tables 重新启动MySQL 现在你可以用新密码mysql -u root -p登录了

啊，对我来说什么都没用!我有一台运行MariaDB 5.5.64的CentOS 7.4机器。

我必须这么做，在YUM安装MariaDB之后;

systemctl restart mariadb
mysql_secure_installation

mysql_secure_installation将带您完成许多步骤，包括“设置根密码?”[Y / n]”。只要输入“y”并输入密码。随你怎么回答其他问题。

然后你可以用你的密码，使用

mysql -u root -p

它会存活下来

systemctl restart mariadb

的关键

然后，我检查了/bin/mysql_secure_installation源代码，看看它是如何神奇地改变根密码的，而这里的其他答案都不能。导入位是:

do_query "UPDATE mysql.user SET Password=PASSWORD('$esc_pass') WHERE User='root';"

.．.上面写着SET Password=…而不是SET authentication_string = PASSWORD....因此，本版本(5.5.64)的正确步骤是:

使用mysql -u root -p登录，使用您已经设置的密码。

或者，停止数据库并启动它:

mysql_safe --skip-grant-tables --skip-networking &

从mysql>提示符:

use mysql;
select host,user,password from user where user = 'root';
(observe your existing passwords for root).
UPDATE mysql.user set Password = PASSWORD('your_new_cleartext_password') where user = 'root' AND host = 'localhost';
select host,user,password from user where user = 'root';
flush privileges;
quit;

停止运行mysqld_safe。重启MariaDB。以root用户登录:mysql -u -p。请使用新密码。

如果您愿意，您可以一次设置所有的根密码。我认为这是明智的:

mysql -u root -p

(login)
use mysql;
select host,user,password from user where user = 'root';
UPDATE mysql.user set Password = PASSWORD('your_new_cleartext_password') where user = 'root';
select host,user,password from user where user = 'root';
flush privileges;
quit;

这将执行更新所有的根密码:即，“localhost”，“127.0.0.1”，和“::1”

将来，当我去RHEL 8或其他什么时候，我会试着记得检查/bin/mysql_secure_installation，看看那些家伙是怎么做的，谁是为这个操作系统配置MariaDB的人。