I have a problem with a new server with Ubuntu 18.04.
I try to change the host name more times, with different method, like editing /etc/hostname or hostnamectl --set-hostname ecc ecc. But when I reboot the machine the host name return to old setting.
Can you help me?
I've a host with incorrect name like:
root@viper:~# cat /etc/hostname
viper
I tried to change hostname:
root@viper:~# hostnamectl set-hostname titan --static
But when I reboot the host the hostname return back to viper.
I also try to edit, with vi/nano the file /etc/hostname and /etc/hosts changing viper to titan.
It'works for current session, but when I reboot the hostname return viper :(
Maybe I'was not clear. The problem is not how to change the hostname, but how to make it persistent. The filesystem is not readonly I'm sure:
/dev/sda2 on / type ext4 (rw,relatime,data=ordered)
/etc/hostnameresides on a persistent and writeable file system. Please [edit] your post to add information instead of posting a comment. (see How do I ask a good question?) – David Foerster Apr 11 '18 at 10:30