how to change the hostname?

[Kenneth Leung_2]

I would like to change the hostname for my server, which is running Red Hat ES 3. Can anyone teach me how to do it? Many thanks

[Alexander Chuzhoy]

edit the file /etc/sysconfig/network

append the desired hostname after HOSTNAME=
save your changes and reboot.

If you don't wish to reboot, then execute this command:
echo > /proc/sys/kernel/hostname

[Jollyjet]

hi refer this link which will help you

http://www.cpqlinux.com/hostname.html

[Steven E. Protter]

Shalom,

Changing hostname in /etc/sysconfig/network may not require a reboot though recommended.

Making the change and doing a service network restart should be sufficient for most situations, short term.

SEP

[Ivan Ferreira]

For do it without reboot, edit /etc/sysconfig/network as menthioned above.

Run:

hostname "newhostname.domain"

Edit /etc/hosts to reflect the changes.

Update DNS servers if necessary.