ha.cf and authkeys configuration files, you may use the ha_propagate command, which you would invoke using either
/usr/lib/heartbeat/ha_propagate
/usr/lib64/heartbeat/ha_propagate
node listed in /etc/ha.d/ha.cf using scp. It will afterwards also connect to the nodes using ssh and issue chkconfig heartbeat on in order to enable Heartbeat services on system startup.