Modify hostname in CentOS/RedHat

Step 1:

# Su-root (or log on as the root user)

Otherwise, the hostname cannot be modified.

We can view the name of the current hostname:

[Root @ vm1035 ~] # Hostname
Vm1035
[Root @ vm1035 ~] #

Then we change vm1035 to vm3012.

 

Step 2:

# Vi/etc/hosts

Change the vm1035 output in/etc/hosts to vm3012, for example:

# Do not remove the following line, or various programs
# That require network functionality will fail.
127.0.0.1 melvrhel5tmp localhost. localdomain localhost
: 1 localhost6.localdomain6 localhost6
10.30.149.35 vm3012.autotest. corp vm3012

 

Step 3:

# Vi/etc/sysconfig/network

Change the hostname to vm3012 as follows:

 

NETWORKING = yes
NETWORKING_IPV6 = yes
HOSTNAME = vm3012

 

 

Step 4:

# Hostname vm3012

Use the command to specify the hostname.

 

Step 5:

Once you log on again, the command prompt character will change:

[Root @ vm3012 ~] #

 

It indicates that the hostname is successfully modified. ^_^