How to change hostname of a server

Simply ssh as root and type


Then to make it permanent, modify this file via vi

vi /etc/sysconfig/network
vi /etc/hosts

Press key i to insert text, and then Esc key and :wq to save.

Change a server's hostname
  1. Using a text editor, open the server's /etc/sysconfig/network file. ...
  2. Modify the HOSTNAME= value to match your FQDN hostname. ...
  3. For internal networking, change the host that is associated with the main IP address for your server (found at /etc/hosts). ...
  4. Run the hostname command.

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