Debian9 完全卸载MariaDB

go4321

　　Uninstall mariadb-server
　　To remove just mariadb-server package itself from Debian 9 (Stretch) execute on terminal:
　　

sudo apt-get remove mariadb-server　　

　　Uninstall mariadb-server and it's dependent packages
　　
To remove the mariadb-server package and any other dependant package which are no longer needed from Debian Stretch.
　　

sudo apt-get remove --auto-remove mariadb-server　　

　　Purging mariadb-server
　　
If you also want to delete configuration and/or data files of mariadb-server from Debian Stretch then this will work:
　　

sudo apt-get purge mariadb-server　　

　　To delete configuration and/or data files of mariadb-server and it's dependencies from Debian Stretch then execute:
　　

sudo apt-get purge --auto-remove mariadb-server　　

apt-get remove mariadb-client-10.1 mariadb-client-core-10.1 mariadb-common mariadb-server-10.1 mariadb-server-core-10.1　　

holyan

最后一个办法完全可行，可以把maria完全删除，包括配置文件和数据库。