Disable Network Manager Service in CENTOS 6

To Disable Network Manager Service in Linux

Login with root access or SSH to server

To Stop Network Manager Service

# service NetworkManager stop

Configure chkconfig so that the Network Manager Service cannot start at Startup

# chkconfig NetworkManager off

Now Add default Net Manager

# chkconfig network on

Start default Manager

# service network start

Done.

출처 : http://hemantnemade.wordpress.com/2012/09/20/disable-network-manager-service-in-centos-6/