XCAT Change the hostname of an existing node

Remove the old names from the services

makedns -d <noderange>
makedhcp -d <noderange>
makegocons -d <noderange>

Rename the node

# node1 being the old name / node2 being the new name
chdef -t node -o node1 -n node2

Regenerate the configuration files for services with the new names

makedns -n
makedhcp -a
makegocons