Set Hostname2023/04/24

	If you would like to change Host Name of your System, set like follows.
[1]	Change hostname. (but when System restarted, it will be back)

# show current hostname

[root@localhost ~]#

hostname

localhost.localdomain

# change hostname

[root@localhost ~]#

hostname dlp.srv.world

[root@localhost ~]#

hostname

dlp.srv.world

# changed

[2]	Change hostname permanently.

[root@localhost ~]#

hostnamectl set-hostname dlp.srv.world

# show settings

[root@localhost ~]#

hostnamectl

     Static hostname: dlp.srv.world
           Icon name: computer-vm
             Chassis: vm 
          Machine ID: 8912940f0d6f4091a3bfb5ce73ff1cf0
             Boot ID: 17e3df79cef8407ea7d7bf5d23440ce2
      Virtualization: kvm
    Operating System: Fedora Linux 38 (Server Edition)
         CPE OS Name: cpe:/o:fedoraproject:fedora:38
      OS Support End: Tue 2024-05-14
OS Support Remaining: 1y 2w 6d
              Kernel: Linux 6.2.11-300.fc38.x86_64
        Architecture: x86-64
     Hardware Vendor: Red Hat
      Hardware Model: KVM
    Firmware Version: 1.16.0-4.el9
       Firmware Date: Tue 2014-04-01

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