Set Hostname2026/11/12

	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: 6dcff80c438f43658dc505c0e26bb1db
             Boot ID: d69acf981eb84fed8344f06f1a5f393f
        Product UUID: ad6207fa-ead5-4753-b67b-02caad6d5ac9
      Virtualization: kvm
    Operating System: Fedora Linux 45 (Server Edition)
         CPE OS Name: cpe:/o:fedoraproject:fedora:45
      OS Support End: Wed 2027-12-08
OS Support Remaining: 1y 3w 4d
              Kernel: Linux 7.2.15-300.fc45.x86_64
        Architecture: x86-64
     Hardware Vendor: Red Hat
      Hardware Model: KVM
        Hardware SKU: 9.8.0
    Hardware Version: RHEL-9.8.0 PC _Q35 + ICH9, 2009_
    Firmware Version: 1.16.3-5.el9_8.1
       Firmware Date: Sun 2023-11-05
        Firmware Age: 3y 1w

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