So, you just screwed up the name of your Ubuntu server?

Well that can be changed in no time and with no downtime

Just follow the ermm following;

  • Set a new hostname
sudo hostname your.brand.new.host.name
  • Edit the /etc/hosts file

sudo vi /etc/hosts

  • Edit the /etc/hostname file

sudo vi/etc/hostname

In some circumstances, you may also have to change the /etc/resolv.conf file.

Simple, yes! But worth 90 seconds to write out ;P