ubuntu16.04,mysql5.7重启不成功。Restarting mysql (via systemctl): mysql.serviceJob for mysql.service failed because the control process exited with error code. See "systemctl status mysql.service"

/etc/mysql/my.cnf中加

!includedir /etc/mysql/conf.d/

[client]
socket=/var/lib/mysql/mysql.sock
[mysqld]
socket=/var/lib/mysql/mysql.sock