I have my own Ubuntu 16.04 server system and MySQLdb in it. And today, I installed MariaDB on the system without noticing installed Mysql. ( with "sudo apt-get install mariadb-server.." command )
I realized there is a mysql-server when finished installing mariadb. So, I removed mariadb with "sudo apt-get remove mariadb-server.." command.
And now, I can't access mysql db with error 2002. ( Naturally, I can't start mysql also. )
How can I fix this situation?