The Package Guidelines for Fedora and Red Hat mandate that no (network) services may be enabled by default for security reasons. As such, you will need to manually enable and start the appropriate services for a Cobbler environment.
tftp
The TFTP server is actually a xinetd service, and as such only needs to be enabled rather then started.
# chkconfig tftp on
xinetd
# service xinetd start
Starting xinetd: [ OK ]
# chkconfig xinetd on
dhcpd
The ISC DHCP service is started by cobbler on sync, but you will need to enable the service to start on boot yourself.
named
The ISC DHCP service is started by cobbler on sync, but you will need to enable the service to start on boot yourself.
httpd
The Apache webserver is required for Cobbler to enable kickstart installations as well as the administration web-interface.
To start the Apache webserver and enable the service to start on boot:
# service httpd start
Starting httpd: [ OK ]
# chkconfig httpd on
