How to Change Machine ID after Cloning a VM on CentOS 7

A Machine ID is a unique hexadecimal, 32-character, lowercase code of the local system that is set during installation and represents an individual machine ID over the network.

 

This article describes How to Change Machine ID after Cloning a VM on CentOS 7.

[root@linuxcnf ~]# cat /etc/machine-id 077d51516a9550419d86f47cf832b910 [root@linuxcnf ~]#

 

Step 1. Remove Machine ID: Run the following command to remove the existing machine ID:

 

[root@linuxcnf ~]# rm /etc/machine-id rm: remove regular file ‘/etc/machine-id’? y [root@linuxcnf ~]#

 

Step 2. Generate machine ID: Run the following command to generate new and unique machine ID: 

 

[root@linuxcnf ~]# systemd-machine-id-setup Initializing machine ID from KVM UUID. [root@linuxcnf ~]#

 

Step 3. Validation: Run the following command to validate the generated new machine ID:

 

[root@linuxcnf ~]# cat /etc/machine-id 36e7b2cec924164895524e896bcbec16 [root@linuxcnf ~]#

 

Done!!! Now the new and unique machine ID generated on CentOS 7.