dhcp failover 

in addition to dhcpd.conf that is created on every run this creates two files dhcpd_primary.conf and dhcpd_secondary.conf as the additions for a failover is not just in the primary dhcpd file and it needs  both the primary and secondary files have a block of needed code configuration for it to work.

added:
cobbler generated secondary configuration files are stored in "/etc/cobbler_generated/dhcp" and "/etc/cobbler_generated/dns"