How To Change Hostname On Ubuntu 21.04 Server2 min read
In this tutorial how to change hostname from ubuntu 21.04 server. This is latest release April 22, 2021. Many features include this ubuntu version. Also change logo and background color.
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Step #01: Check server version using below command.
root@ubuntu21:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 21.04
Codename: Hirsute
Must be change cloud.cfg file. Open cloud.cfg file using any editor.
root@ubuntu21:~# vi /etc/cloud/cloud.cfg
Then change false to true. As like below
preserve_hostname: true
Then save press Esc type :wq then press Enter.
Step #02: Open hosts file and edit server ip address and hostname.
root@ubuntu21:~# vi /etc/hosts
as like below
127.0.0.1 localhost 10.66.100.9 Server.technologyrss.local Server
Then save press Esc type :wq then press Enter.
Then again open hostname file and edit your hostname.
root@ubuntu21:~# vi /etc/hostname
As like below
Server
Then save press Esc type :wq then press Enter.
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