ps aux | grep mysql
root 553 0.0 0.0 11448 1540 ? S 13:54 0:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/cloudlix.com.pid
mysql 657 0.0 4.1 1177708 105960 ? Sl 13:54 0:00 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/lib/mysql/cloudlix.com.err --pid-file=/var/lib/mysql/cloudlix.com.pid
service mysql stop if not working:
kill -9 553 && kill -9 657
not work
only need restart server