Access denied for user debian-sys-maint

Ketika melakukan upgrade mysql atau mariadb pada debian-based linux, tiba-tiba pesan error tersebut muncul neo@thematrix:~$ sudo service mysql restart * Stopping MySQL database server mysqld [fail] * Starting MySQL database server mysqld [ OK ] /usr/bin/mysqladmin: connect to server at ‘localhost’ failed error: ‘Access denied for user ‘debian-sys-maint’@’localhost’ (using password: YES)’ Hal ini dapat terjadi…