If a registration of a Dollar Universe node to UVMS is performed with the following command:
unims -register -login <login> -pwd <password> -mshost <hostname UVMS> -msport <port UVMS> -host <HOSTNAME> -areaA -areaI -areaS -label "node registered on <date_hour>" -mgrOAP -mgrSAP -mgrJEE
... this will force the variable u_localhostname in the values.xml to be set to "<HOSTNAME>". The information will also be forwarded to UVMS.
If the node name is not spelled correctly or if it is not valid, the node will not be operational anymore.
The parameter '-host' must be used with care and in any case a host name, which is validated on DNS level must be used, otherwise there is a risk that the node becomes unreachable.
If there is no particular reason for choosing a specific host name, the best approach is to refrain from using the parameter '-host' in the 'unims - register' instruction!