Set Hostname2026/04/27

	This is the example for setting Hostname of your system.
[1]	Change hostname. (but if rebooting, it will be back).

# show current hostname

root@ubuntu:~#

hostname

ubuntu

# change hostname

root@ubuntu:~#

hostname dlp

root@ubuntu:~#

hostname

dlp

# just changed

[2]	Change hostname permanently.

root@ubuntu:~#

hostnamectl set-hostname dlp.srv.world

# show settings

root@ubuntu:~#

hostnamectl

 Static hostname: dlp.srv.world
       Icon name: computer-vm
         Chassis: vm
      Machine ID: df5ab49faaf14b409b2c405e838f12cb
         Boot ID: 5a5cf1889ae04507a46ad233bf5aaca5
    Product UUID: a918da5a-7a00-46ef-8f3f-091249a7c632
  Virtualization: kvm
Operating System: Ubuntu 26.04 LTS
          Kernel: Linux 7.0.0-14-generic
    Architecture: x86-64
 Hardware Vendor: Red Hat
  Hardware Model: KVM
    Hardware SKU: 9.6.0
Hardware Version: RHEL-9.6.0 PC _Q35 + ICH9, 2009_
Firmware Version: 1.16.3-4.el9
   Firmware Date: Tue 2014-04-01
    Firmware Age: 12y 3w 4d

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