All, Did anyone face issues after upgrading the mariadb from 10.1 to 10.2 to login to root user as shown below: mysql -u root I got the error - unix_socket not loaded. I noticed that the unix_socket authentication is required after the upgrade for root login from localhost. Can anyone confirm whether this is part of the feature after upgrades. In my previous version: select user, plugin from mysql.user; +-----------+------+-------------+ | Host | User | plugin | +-----------+------+-------------+ | localhost | root | | ------------------------------------ After upgrade: select user, plugin from mysql.user; +-----------+------+-------------+ | Host | User | plugin | +-----------+------+-------------+ | localhost | root | unix_socket | --------------------------------------- Regards, Karthick