黃昏的甘蔗

使用 $ sudo mysql_secure_installation 做 mysql 8 version 初始化 卻在 Estimated strength of the password: 100 Change the password for root ? 這裡無限輪迴 Endless loop，一直設定 mysql root 密碼，還不能 ctrl-C 中斷

解決方式

簡單說，先以 sudo mysql 進入，再更換掉 mysql root 密碼，步驟請參考

~$ sudo mysql_secure_installation -p
[sudo] password for hello:
Enter password: [sudo 的密碼]

Securing the MySQL server deployment.

The 'validate_password' component is installed on the server.
The subsequent steps will run with the existing configuration
of the component.
Using existing password for root.

Estimated strength of the password: 100
Change the password for root ? ((Press y|Y for Yes, any other key for No) : no
// 上面這行很重要，請選擇 No ，如果 yes 就進入五道輪迴了，連 Ctrl-C 都不給你機會，只能重新連線

// 下面也不特別，就跟正常初始化一樣

... skipping.
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them. This is intended only for
testing, and to make the installation go a bit smoother.
You should remove them before moving into a production
environment.

Remove anonymous users? (Press y|Y for Yes, any other key for No) : y
Success.

Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network.

Disallow root login remotely? (Press y|Y for Yes, any other key for No) : y
Success.

By default, MySQL comes with a database named 'test' that
anyone can access. This is also intended only for testing,
and should be removed before moving into a production
environment.

Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y
- Dropping test database...
Success.

- Removing privileges on test database...
Success.

Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.

Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y
Success.

All done!

// 然後使用 sudo 進入

$ sudo mysql -u root -p

Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 25
Server version: 8.0.32-0ubuntu0.22.04.2 (Ubuntu)

Copyright (c) 2000, 2023, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

// 進行 Mysql Root 密碼變更

mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password by 'mysql_root_password';

mysql> exit

// 變更完 Mysql Root 密碼，就可以以自己設定的密碼登入了

$ mysql -u root -p

就可以跟以前一樣繼續操作 MySQL。

~END