Hello ,
Today lets see an article about changing hostname in CentOS and Redhat.
We have to change hostname in 3 locations to apply changes globally in all locations.
Configuration filenames :
1. Open /etc/sysconfig/network with any editor.
And write/modify line as
close and save file.
2. Open /etc/hosts file and add as
# vim /etc/hosts
and add as
close and save file.
3. Now type command hostname to see current hostname . To assign new hostname
after doing all those steps , restart network with
Hope it will help you.
Summary :
1. /etc/sysconfig/network
2. /etc/hosts
3. hostname command
1. Open /etc/sysconfig/network with any editor.
# vim /etc/sysconfig/network
And write/modify line as
HOSTNAME=
Ex: HOSTNAME=centos.virt02.com
close and save file.
2. Open /etc/hosts file and add as
# vim /etc/hosts
and add as
192.168.56.101 centos.virt02.com centos
close and save file.
3. Now type command hostname to see current hostname . To assign new hostname
# hostname=centos.virt02.com
after doing all those steps , restart network with
service network restart
Hope it will help you.
Summary :
[root@localhost Tools]# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=centos.virt02.com
[root@localhost Tools]# cat /etc/hosts
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
192.168.56.101 centos.virt02.com centos
[root@localhost Tools]# hostname
centos.virt02.com
[root@localhost Tools]#
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