When you clone a VM, sometimes VM id may not be unique and you end up with same VM id for multiple machines.
So, if that is the case just remove /etc/machine-id and then reboot
Then, run systemd-machine-id-setup.
Now, you will have a unique id in /etc/machine-id. Now, Live happily ever after :) :)
# systemd-machine-id-setup
Initializing machine ID from KVM UUID.
# cat /etc/machine-id
4cd635a844fb4219bb03f8726a64abca
Original error faced while using ansible:
failed: [centosmaster] (item=tmaster) => {
"assertion": "ansible_hostname == hostvars[item]['ansible_hostname'] or ansible_machine_id != hostvars[item]['ansible_machine_id']",
"changed": false,
"evaluated_to": false,
"failed": true,
"item": "tmaster"
}
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