To convert a cluster that is not running GNS to a GNS server cluster, run the following command as root, providing a valid IP address and a ___domain:
# srvctl add gns -vip IP_address -___domain ___domain
Note:
Specifying a ___domain is not required when adding a GNS VIP.
The IP address you specify cannot currently be used by another GNS instance.
The configured cluster must have DNS delegation for it to be a GNS server cluster.