Background: I made a tar backup of one system and wanted to untar that onto different hardware. A bit like cloning. However I needed to make sure the hostname and network settings were those of the new machine and not the cloned machine. So for future reference …
Change the Hostname
vi /etc/hosts
Change the Network Settings
To change the IP of a CentOS/Red Hat machine amend the following files:
- /etc/sysconfig/network
- /etc/sysconfig/network-scripts/ifcfg-eth0
A reboot will pick up the changes but if you want to avoid this:
hostname -v yourhostname
Restart networking:
/etc/init.d/network restart
