Modify Linux host name (hostname)

When the Inux is installed, its default hostname is localhost.

It takes 3 steps to modify the Linux host name:

1. Modify the current host name using hostname.

Hostname new-hostname

2. Modify the/etc/sysconfig/network configuration file so that the new hostname is used the next time you restart.

Open the/etc/sysconfig/network file and change the hostname to the following content.

Hostname=new-hostname.localdomain

3. Modify the local domain name resolution file/etc/hosts, so that the application of this machine can resolve the new host name.

Edit file:/etc/hosts
Modified: xxx.xxx.xxx.xxx new-hostname.domainname New-hostname
(XXX here on behalf of the local network address, can also be loopback address 127.0.0.1)
The modified/etc/hosts file is as follows:

127.0.0.1 localhost Localhost.localdomain
127.0.0.1 New-hostname New-hostname.localdomain

The reboot will take effect.