- Login to your client's area from yourserver.se
- Select Services — My Services
- Go to"View Details" next to the server, you want to change the hostname for
- Click "Change" button next to the existing hostname of your server.
Please note, that server's hostname is set every time it starts, so changing hostname inside your server (i.e. in /etc/hostname or /etc/sysconfig/network) is not preserved after reboot.