Change Linux Hostname and IP Address

Sometimes you might want to change the Linux hostname and IP address assigned to a Linux machine. In this article, we will be looking at Linux hostname and IP address change.

• Change Linux Hostname

• Change Linux IP Address

Change Linux Hostname

Check the current hostname on the server

hostnamectl

To change the hostname, give new hostname in the single quotes

hostnamectl set-hostname 'dev.dbagenesis.com'

Verify new hostname change

hostnamectl

Change Linux IP Address

On a Linux minimal install, you can assign new IP address by editing /etc/sysconfig/network-scripts/ifcfg-eth3 file

vi /etc/sysconfig/network-scripts/ifcfg-eth3

--> change old ip to new ip
--> change old gateway to new gateway ip
--> save and close

Restart the network

service network restart

Done!