Home / How to Change hostname and IP address of Linux server without rebooting server

How to Change hostname and IP address of Linux server without rebooting server

You can change option in third line in /etc/hosts file on Linux server without rebooting;

/etc/hosts

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.0.1 server.seimaxim.com seimaxim

You can change all of the following options in /etc/sysconfig/network without reboot.

/etc/sysconfig/network

NETWORKING=yes
HOSTNAME=server.seimaxim.com
GATEWAY=192.168.0.1

Similarly options in /etc/sysconfig/network-scripts/ifcfg-eth0 can also be changed.

/etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.0.1
NETMASK=255.255.255.0

Hostname of server can be changed with;

hostname server.seimaxim.com

Restart network with;

systemctl restart network

Leave a Reply