1. Login:

   mysql -uroot -ptest1234;

2. Show password policy:

   show variables like 'validate_password%';

3. Show all databases

   show databases;

4. Backup DB:

   mysqldump -u root -p linux > /home/beinan/linuxsir031130.sql

5. Import DB:

   mysql -u root -p linux < /home/beinan/linuxsir031130.sql

6. Create a new user:

   CREATE USER 'user'@'localhost' IDENTIFIED BY 'yourpassword';
   
   GRANT ALL PRIVILEGES ON dbname.* TO 'user'@'localhost';
   
   FLUSH PRIVILEGES;

   Note:

   1. ‘user’@’localhost’ 後面的localhost是指可以存取DB的IP，不是DB server的IP
   2. yourpassword不需要填加密的，直接用明碼就可以了
   3. ‘10.0.1.%’ could be replaced with ‘localhost’
      Password generator: https://www.browserling.com/tools/mysql-password

Creating an user with adminer:

• 如果要讓user透過adminer登入，目前測試server欄位是一定要填%

Referece:

1. https://www.opencli.com/mysql/mysql-add-new-users-databases-privileges