topic Re: change hostname in Operating System - Linux

change hostname

Tonatiuh — Sun, 23 Aug 2009 14:07:20 GMT

Red Hat Enterprise Linux 4.8

How can I change the hostname of the server once it has been installed?

Re: change hostname

Gokul Chandola — Sun, 23 Aug 2009 15:59:52 GMT

Hi,
Go to System Administration, there are option to change Hostname etc.

Regards,
Gokul Chandola

Re: change hostname

JKytsi — Sun, 23 Aug 2009 16:02:31 GMT

RedHat based system use the file /etc/sysconfig/network to read the saved hostname at system boot. This is set using the init script /etc/rc.d/rc.sysinit

/etc/sysconfig/network NETWORKING=yes HOSTNAME="plain.domainname.com" GATEWAY="192.168.0.1" GATEWAYDEV="eth0" FORWARD_IPV4="yes"So in order to preserve your change on system reboot edit this file and enter the appropriate name using the HOSTNAME variable.

Re: change hostname

Matti_Kurkela — Sun, 23 Aug 2009 18:39:30 GMT

If you change the hostname by editing /etc/sysconfig/network, also remember to edit /etc/hosts.

The system must be able to resolve its own name using /etc/hosts when it's starting up and the network interfaces have not been activated yet.

MK

Re: change hostname

Yogesh M Puranik — Sun, 23 Aug 2009 23:55:01 GMT

Hi,

After Changing the above mentioned files,dont forget to restart the netwok/reboot the server.

#service network restart

Rgds
Yogesh

Re: change hostname

Hakki Aydin Ucar — Mon, 24 Aug 2009 07:53:06 GMT

Edit network at address:

vi /etc/sysconfig/network

NETWORKING=yes
HOSTNAME=your_host_name

Re: change hostname

Wilfred Chau_1 — Mon, 24 Aug 2009 21:34:50 GMT

temporary:
as root:
echo "newhostname" > /proc/sys/kernel/hostname

permanent:
as root:
system-config-network
under dns, change to your new hostname
then save your changes