Modify host-name in Cent-OS 6

To change host name you must have root access of the system. We can do it using any text editor, here I am using text editor "vim".

Open /etc/sysconfig/network file.

         [root@lmntechnohub ~]# vim  /etc/sysconfig/network

Modify the HOSTNAME= value, and set your new host name.

     HOSTNAME=lmntechnohub.com

For internal networking, change the entries in host files at /etc/hosts .

     127.0.0.1    localhost localhost.localdomain

     10.10.10.10 lmntechnohub.com

Run the host-name command. This command will change host-name of Linux server, but it will not immediately update all programs that are running with old host-name.

     [root@lmntechnohub ~]# hostname lmntechnohub.com

     [root@lmntechnohub ~]# hostname

     lmntechnohub.com

     [root@lmntechnohub ~]#

To finalize it restart network service on your system, to ensure that changes will there on system restart.

     [root@lmntechnohub ~]# /etc/init.d/network restart

ENJOY! and Stay connected.