How to Change Hostname in AlmaLinux 10

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Displaying the Current Hostname

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Find out the hostname of your system by using the below command,

hostnamectl

Output:

[root@vps ~]# hostnamectl
     Static hostname: vps.server.com
           Icon name: computer-vm
             Chassis: vm 🖴
          Machine ID: eef6196a542813be63003957106a8940
             Boot ID: 6060b02d679e45dc8d5e590093343c92
        Product UUID: e2349473-ebdc-4044-b3d0-f04941ac5bae
      Virtualization: kvm
    Operating System: AlmaLinux 10.0 (Purple Lion)
         CPE OS Name: cpe:/o:almalinux:almalinux:10::baseos
      OS Support End: Fri 2035-06-01
OS Support Remaining: 10y 1d
              Kernel: Linux 6.12.0-55.9.1.el10_0.x86_64
        Architecture: x86-64
     Hardware Vendor: Red Hat
      Hardware Model: KVM
    Firmware Version: 1.16.0-4.module_el8.9.0+3659+9c8643f3
       Firmware Date: Tue 2014-04-01
        Firmware Age: 11y 1month 4w

Changing the System Hostname

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Now that you know the current hostname, you can change the hostname by using the following command, and Optionally you can also set the pretty hostname as follows.

hostnamectl set-hostname crowncloud.net

hostnamectl set-hostname "crowncloud production server" --pretty

Next, add the record for the hostname in the /etc/hosts file.

127.0.0.1 crowncloud.net

Edit the file using your favorite editor.

nano /etc/hosts

After you've added/edited the file, save and exit the file.

Output:

[root@server ~]# cat /etc/hosts
127.0.0.1 crowncloud.net

This will also add an entry to the /etc/hostname file automatically.

Restart the systemd-hostnamed service.

systemctl restart systemd-hostnamed

Alternatively Set or Change the Hostname

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Alternatively, you can set or change the hostname of your system using NetworkManager's Text User Interface. Run the following command and follow the steps as shown below,

nmtui

Select set system hostname.

Enter the new hostname.

Restart the systemd-hostnamed service.

systemctl restart systemd-hostnamed

Verify the Change

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To verify the hostname has been fully changed, enter the hostnamectl command.

[root@vps ~]# hostnamectl
     Static hostname: crowncloud.net
     Pretty hostname: crowncloud production server
           Icon name: computer-vm
             Chassis: vm 🖴
          Machine ID: eef6196a542813be63003957106a8940
             Boot ID: 6060b02d679e45dc8d5e590093343c92
        Product UUID: e2349473-ebdc-4044-b3d0-f04941ac5bae
      Virtualization: kvm
    Operating System: AlmaLinux 10.0 (Purple Lion)
         CPE OS Name: cpe:/o:almalinux:almalinux:10::baseos
      OS Support End: Fri 2035-06-01
OS Support Remaining: 10y 1d
              Kernel: Linux 6.12.0-55.9.1.el10_0.x86_64
        Architecture: x86-64
     Hardware Vendor: Red Hat
      Hardware Model: KVM