转载：http://www.3lian.com/edu/2012/04-01/24278.html
Centos上Apache重启，mysql重启, nginx 重启方法
1.重启 apache
service httpd restrat
/etc/init.d/httpd stop
/etc/init.d/httpd start
2.重启 mysql
service mysql restart
/etc/init.d/mysqld stop
/etc/init.d/mysqld start
3.重启Nginx
service nginx restart
/etc/init.d/nginx stop
/etc/init.d/nginx start