Linux services or daemons are programs that typically start when the system boots and remain running in the background until the system shuts down. What follows are three distinct ways to manage services RHEL and CentOS servers.
1. chkconfig – You can use this simple command to show current services, enable them, disable them, start and stop them. You can also set run levels for services to make sure they start when and how you want.
2. Setup – Red Hat based distributions have an ncurses tool that you can navigate with your keyboard for a variety of configuration settings. Among those are services. To run setup, simply type “setup” as root and navigate to “System services”.
3. Hosting Automation – If you do not want to manage services through the console or SSH, you can rely on some form of hosting automation, such as cPanel WHM or Webmin. These tools provide full functionality for services management.
For security and performance it is better to disable services you do not use. You can use any of the above three methods to accomplish that. You can also uninstall services if you are sure you will not need them in the near future – See more at: http://www.serverschool.com/server-configuration/3-ways-to-enable-and-disable-linux-services/#sthash.Rs7WvEpY.dpuf