The difference between CentOS and Ubuntu modified hostname

• CentOS Modify Host Name

1. Temporarily modify host name

Display host Name:

[Email protected]:~$ hostnamelocalhost

Modify Host Name:

[Email protected]:~$ sudo hostname orcl1[email protected]:~$ HOSTNAMEORCL1

2. Permanently modify the host name

The above modification is only a temporary change, after the restart is back to the original.

Step 1:

Modify the hostname in/etc/sysconfig/network

Vi/etc/sysconfig/networkhostname=localhost.localdomain  #修改localhost. Localdomain to ORCL1

Modify the hostname entry for the network. The point is preceded by the hostname, and the dot is followed by the domain name. No point is the host name.

This is permanently modified and takes effect after reboot.

To take effect immediately, you can execute the command at the same time:

Hostname ORCL1

Step 2:
Modify the/etc/hosts file

vi/etc/hosts127.0.0.1    localhost.localdomain  #修改localhost. Localdomain to ORCL1

Shutdown-r now    #最后, restart the server.

• Ubuntu Modify host Name

1. Temporary modification
$sudo hostname Newhostname
After the reboot, it's back to the original.
2. Permanent modification

The first step:

sudo vi/etc/hostname

Step Two: Modify the Hosts file

Input: sudo vi/etc/hosts

Find the 127.0.1.1 line and change the old hostname on its right to your new host name. Restart Network
sudo/etc/init.d/networking restart
Or
Reboot
Restart the computer to take effect

The difference between CentOS and Ubuntu modified hostname