A hostname is a unique name assigned to a server or computer that helps identify it on a network. In CentOS 7, you can temporarily change the hostname using the This guide explains how to set a permanent hostname on a CentOS 7 Minimal Server, whether it is installed on a physical machine, VPS, or virtual machine.<\/p>\n\n\n\n Before proceeding, ensure you have:<\/p>\n\n\n\n You can change the hostname temporarily using the following command:<\/p>\n\n\n\n Verify the current hostname:<\/p>\n\n\n\n The Transient hostname<\/strong> reflects the temporary change. However, after a server reboot, the hostname will revert to its previous value.<\/p>\n\n\n\n To configure a hostname that persists across reboots, use the Verify the change:<\/p>\n\n\n\n The hostname is now stored as the Static hostname<\/strong> and will remain unchanged after system reboots.<\/p>\n\n\n\n You can confirm the hostname at any time using:<\/p>\n\n\n\n or<\/p>\n\n\n\n Both commands should display the newly configured hostname.<\/p>\n\n\n\n Setting a permanent hostname in CentOS 7 is a simple but important system administration task. While the A static hostname<\/strong> is permanently stored on the system and survives reboots. A transient hostname<\/strong> is temporary and may be assigned by DHCP or changed manually until the system restarts.<\/p>\n\n\n\n No. The hostname change takes effect immediately when using:<\/p>\n\n\n\n Use either of the following commands:<\/p>\n\n\n\n or<\/p>\n\n\n\n Both commands display the current hostname configuration.<\/p>\n\n\n\nhostname<\/code> command, but the change will be lost after a reboot. To ensure the hostname remains unchanged even after restarting the server, you must configure a permanent (static) hostname.<\/p>\n\n\n\nPrerequisites<\/h2>\n\n\n\n
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abc.abc.com<\/code>)<\/li>\n<\/ul>\n\n\n\nChange Hostname Temporarily<\/h2>\n\n\n\n
hostname abc.abc.com<\/pre>\n\n\n\n
hostnamectl<\/pre>\n\n\n\n
Sample Output<\/h4>\n\n\n\n
Static hostname: localhost.localdomain\nTransient hostname: abc.abc.com<\/pre>\n\n\n\n
Set a Permanent Hostname in CentOS 7<\/h2>\n\n\n\n
hostnamectl<\/code> command:<\/p>\n\n\n\nhostnamectl set-hostname abc.abc.com<\/pre>\n\n\n\n
hostnamectl<\/pre>\n\n\n\n
Sample Output<\/h4>\n\n\n\n
Static hostname: abc.abc.com\nIcon name: computer-vm\nChassis: vm\nMachine ID: 31ff204cc76641e99460750cef4d0e0e\nBoot ID: 9992b7511b4942c29ea48a0aada0294c\nVirtualization: vmware\nOperating System: CentOS Linux 7 (Core)\nKernel: Linux 3.10.0-514.el7.x86_64\nArchitecture: x86-64<\/pre>\n\n\n\n
Verify Hostname Configuration<\/h2>\n\n\n\n
hostnamectl status<\/pre>\n\n\n\n
hostname<\/pre>\n\n\n\n
Conclusion<\/h2>\n\n\n\n
hostname<\/code> command only changes the hostname temporarily, the hostnamectl set-hostname<\/code> command ensures the hostname persists after reboots. Using a properly configured hostname improves server identification, network management, monitoring, and troubleshooting.<\/p>\n\n\n\nFrequently Asked Questions (FAQ)<\/h2>\n\n\n\n
1. What is the difference between a static hostname and a transient hostname?<\/h4>\n\n\n\n
2. Do I need to reboot the server after changing the hostname?<\/h4>\n\n\n\n
hostnamectl set-hostname <hostname><\/pre>\n\n\n\n
3. How can I check the current hostname on CentOS 7?<\/h4>\n\n\n\n
hostname<\/pre>\n\n\n\n
hostnamectl<\/pre>\n\n\n\n
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