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Here are some example configuration files:

/etc/hosts 127.0.0.1 localhost.localdomain localhost 192.168.0.254 server1.example.com server1

/etc/sysconfig/network NETWORKING=yes HOSTNAME=server1.example.com GATEWAY=192.168.0.1

/etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 BOOTPROTO=static IPADDR=192.168.0.254 NETMASK=255.255.255.0 ONBOOT=yes

If you change these values (see example below), you can restart networking without rebooting using the command(s):

# service network restart
# hostname server1.example.com

If you are in the Gnome or KDE user interface, you must also restart it with the commands:

# init 3
# init 5

No reboot is required.

For example, if you needed to change 'server1' to 'webserver1', you can modify the following aspects in the files mentioned above (then follow the other instructions):

• the Fully Qualified Domain Name and the Alias in /etc/hosts
• change the HOSTNAME= line in /etc/sysconfig/network

/etc/hosts 127.0.0.1 localhost.localdomain localhost 192.168.0.254 webserver1.example.com webserver1

/etc/sysconfig/network NETWORKING=yes HOSTNAME=webserver1.example.com GATEWAY=192.168.0.1