[developRos nication]# mysqladmin -u root -p flush-privileges password //使用命令修改系统 Enter password: [developRos nication]# mysql -u root -p //使用老密码登陆 Enter password: Welcome to the MariaDB monitor. Commands end with ; or g. Your MariaDB connection id is 4 Server version: 10.5.8-MariaDB Arch Linux Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. MariaDB [(none)]> q //用q退出 Bye [developRos nication]# mysql -u root -p //使用老密码登陆 Enter password: Welcome to the MariaDB monitor. Commands end with ; or g. Your MariaDB connection id is 5 Server version: 10.5.8-MariaDB Arch Linux Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. MariaDB [(none)]> exit //用exit退出或者执行mysqladmin -u root -p flush-privileges刷新也可以 Bye [developRos nication]# exit exit nication � ~ � mysql -u root -p //使用新密码登陆 Enter password: ERROR 1698 (28000): Access denied for user 'root'@'localhost' nication � ~ � mysql -u root -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or g. Your MariaDB connection id is 7 Server version: 10.5.8-MariaDB Arch Linux Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.