How to Change Hostname in Rocky Linux 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: 67790405611f050c576dcff8bc59a340
             Boot ID: 96042ee58e5e42ce90796ab84385cc19
        Product UUID: e2349473-ebdc-4044-b3d0-f04941ac5bae
      Virtualization: kvm
    Operating System: Rocky Linux 10.0 (Red Quartz)
         CPE OS Name: cpe:/o:rocky:rocky:10::baseos
      OS Support End: Thu 2035-05-31
OS Support Remaining: 9y 11month 1w 6d
              Kernel: Linux 6.12.0-55.14.1.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 2month 2w 1d

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 Hostname using NMTUI

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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: 6a4c71a7b0b084ccac5b956a61183970
             Boot ID: 8f9fee2adb0a4f4abac328098a987c98
        Product UUID: e2349473-ebdc-4044-b3d0-f04941ac5bae
      Virtualization: kvm
    Operating System: Rocky Linux 10.0 (Red Quartz)
         CPE OS Name: cpe:/o:rocky:rocky:10::baseos
      OS Support End: Thu 2035-05-31
OS Support Remaining: 9y 11month 1w 6d
              Kernel: Linux 6.12.0-55.14.1.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 2month 2w 1d