The Cluster Controller service is provided by the eucalyptus-cc package.
If this service is running on the same system as the eucalyptus-cloud service, then registration is automatic.
Otherwise, you need to manually register the cluster with the eucalyptus-cloud service by defining the cluster's name, and the one or more IP addresses of the cluster controllers.
On the Cloud Controller:
Define the shell variable CC_NAME in /etc/eucalyptus/eucalyptus-cc.conf
Define the shell variable CC_IP_ADDR in /etc/eucalyptus/eucalyptus-ipaddr.conf, as a space separated list of one or more IP addresses.
Then, on the Cloud Controller, run:
sudo start eucalyptus-cc-registration