Solved: How to change hostname using nmtui or nmcli in redhat linux

In our last post we have seen how to change hostname manually or with hostnamectl .
In this post we will discuss how to change hostname with nmtui and nmcli tools.
nmtui
Let’s first try with nmtui tool

• If you don’t have the nmtui tool installed, you can install it using yum

yum install NetworkManager-tui

• Invoke the nmtui interface from the command line by executing as root user

nmtui

• In the menu select “Set system hostname” .

• Write the new hostname which you want to keep.  We want to change it to “prodvedas”.

• To make it effective restart the “hostnamed” service

systemctl restart systemd-hostnamed

• Now if you login with new session or do “su -” in same session you should see new hostname.

nmcli
Let’s try changing the hostname with nmcli tool in Redhat Linux.

• To check the current hostname

nmcli general hostname

• If you want to change the hostname

nmcli general hostname prodvedas

• To make it effective restart hostnamed service

systemctl restart systemd-hostnamed

• Now if you login with new session or do “su -” in same session you should see new hostname.

Hostname changed by any of the above method will be persistent across reboot.
If you are trying to change hostname of AWS EC2 linux instance the process will be slightly different. Refer this post to change AWS EC2 instance hostname.