Ubuntu can't stop mysqld

The only thing that worked for me is partially explained here.

If everything else fails, try this:

root@myhost:/usr/bin# initctl --system stop mysql

After that you can start controlling mysql normally using

root@myhost:/usr/bin# /etc/init.d/mysql start

Or

root@myhost:/usr/bin# initctl --system start mysql

You can use pkill mysqld

Linux man page: pkill

If all else fails, use

kill -9 "processid"

or

kill -s "processid"