root@s1:/home/marius# service mysql start
Job for mysql.service failed. See 'systemctl status mysql.service' and 'journalctl -xn' for details.
root@s1:/home/marius# systemctl status mysql.service
? mysql.service - LSB: Start and stop the mysql database server daemon
   Loaded: loaded (/etc/init.d/mysql)
   Active: failed (Result: exit-code) since Sa 2017-09-30 11:11:17 CEST; 22s ago
  Process: 13482 ExecStart=/etc/init.d/mysql start (code=exited, status=1/FAILURE)

Sep 30 11:11:17  /etc/init.d/mysql[14200]: 0 processes alive and '/usr/bin/mysqladmin --defaults-file=/etc/mysql/debian.cnf ping' resulted in
Sep 30 11:11:17  /etc/init.d/mysql[14200]: [61B blob data]
Sep 30 11:11:17  /etc/init.d/mysql[14200]: error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)'
Sep 30 11:11:17  /etc/init.d/mysql[14200]: Check that mysqld is running and that the socket: '/var/run/mysqld/mysqld.sock' exists!
Sep 30 11:11:17  /etc/init.d/mysql[14200]: 
Sep 30 11:11:17  mysql[13482]: Starting MySQL database server: mysqld . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . failed!
Sep 30 11:11:17  systemd[1]: mysql.service: control process exited, code=exited status=1
Sep 30 11:11:17  systemd[1]: Failed to start LSB: Start and stop the mysql database server daemon.
Sep 30 11:11:17  systemd[1]: Unit mysql.service entered failed state.