To auto start services in Centos, Redhat or Oracle Linux, you can use builtin chkconfig utility. It is located in /sbin directory. If you are a regular user (non-root), then /sbin may not be in your path. Therefore, you may have to use the full path to access the chkconfig utility.

To auto start a new service:

1. Find out the name of service’s script from /etc/init.d/ directory e.g. mysqld or httpd
2. Add it to chkconfig

   sudo /sbin/chkconfig --add mysqld

3. Make sure it is in the chkconfig.

   sudo /sbin/chkconfig --list mysqld

4. Set it to autostart

   sudo /sbin/chkconfig mysqld on

5. To stop a service from auto starting on boot

   sudo /sbin/chkconfig mysqld off

source: A Bit Pusher