How to change your hostname in CentOS

Open the /etc/sysconfig/network file with your favorite text editor. Modify the HOSTNAME= value to

match your FQDN host name.

# nano /etc/sysconfig/network

Change the host that is associated to your main IP address for your server, this is for internal

networking (found at /etc/hosts):

nano /etc/hosts


Hostname Command Line Change

The ‘hostname’ command will let you change the hostname on the server that the command line

remembers, but it will not actively update all programs that are running under the old hostname.

# hostname

# hostname

Restart Networking

At this point all the necessary changes that needed to be made have been made, you will want to

restart networking on your server to make sure that changes will be persistent on reboot:

# /etc/init.d/network restart