change hostname

[Tonatiuh]

Red Hat Enterprise Linux 4.8

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

[Gokul Chandola]

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

Regards,
Gokul Chandola

[JKytsi]

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.

[Matti_Kurkela]

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

[Yogesh M Puranik]

Hi,

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

#service network restart

Rgds
Yogesh

[Hakki Aydin Ucar]

Edit network at address:

vi /etc/sysconfig/network

NETWORKING=yes
HOSTNAME=your_host_name

[Wilfred Chau_1]

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