How to Change the Hostname on CentOS 5.5 Server

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In this post, i will show you how to change the hostname on linux CentOS 5.5. Reboot is required for both steps.

Option 1. Change Hostname using command shell:

    [[email protected] ~]# vi /etc/sysconfig/network
    NETWORKING=yes
    NETWORKING_IPV6=no
    HOSTNAME=server.intranet.local
    

Change the HOSTNAME=your_preferred_hostname

Option 2. Change Hostname using GUI
Type Setup as below and Press Enter

    [[email protected] ~]# setup
    

Select Network Configuration –> Edit DNS Configuration –> Hostname