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OCI - How to change the machine-id of an Instance 

in Linux

Applies to:  

Oracle Cloud Infrastructure - Version N/A and later 

Linux x86-64 

Goal: 

This document outlines the steps required to change the “machine-id” of an instance.  It may be required to change the machine-id after cloning an instance. 

Solution: 

Use the systemd-machine-id-setup command to change the machine-id, by following these steps:

1) Make a backup copy of the existing file:

$ sudo cp -p /etc/machine-id /root/orig-machine-id 

2) Clean out the contents of the existing file:

$ sudo cat /dev/null > /etc/machine-id 

3) Create a new id:

$ sudo systemd-machine-id-setup --root=/ 
Initializing machine ID from random generator.   

4) Check that the machine-id has a new id: 

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