Hostname User Account

Distro with systemd

Almost all modern Linux distro comes with systemd an init system used in Linux distributions to bootstrap the user space and to manage system processes after booting.

  $ hostnamectl
  
     Static hostname: gfs03
         Icon name: computer-vm
           Chassis: vm
        Machine ID: beb217fbb4324b7d9959f78xxxxxxxxx
           Boot ID: 123a3aa710314175aec7c54yyyyyyyyy
    Virtualization: qemu
  Operating System: Ubuntu 16.04.3 LTS
            Kernel: Linux 4.10.0-40-generic
      Architecture: x86-64

I am going to change gfs03 hostname to gfs-server-03:

$ hostnamectl set-hostname 'gfs-server-03'

Traditional way

2 files to modify /etc/hostname (or /etc/sysconfig/network) and /etc/hosts and then reboot.

updates in /etc/hosts are one particular line: From: 127.0.1.1 old-host-name

To: 127.0.1.1 new-server-name-here

create user account

useradd -m tim -s /bin/bash
useradd -m -d /test test
passwd test
su - test
useradd -m john -G accounts
useradd -G admins,webadmin,developers tecmint

usermod -aG sudo username

Written on April 30, 2018