machine-id is fixed on Ubuntu trusty image

[hirose31]

Ubuntu trusy image which is generated by disk-image-create v2.9.0 has /var/lib/dbus/machine-id, so all servers which are created from this image have same machine-id.

$ disk-image-create --version
2.9.0

$ DIB_RELEASE=trusty disk-image-create ubuntu dhcp-all-interfaces baremetal bootloader -o trusty

$ sudo modprobe nbd max_part=63
$ sudo qemu-nbd -c /dev/nbd0 trusty.qcow2
$ sudo mount /dev/nbd0 /mnt

$ cat /mnt/var/lib/dbus/machine-id
674157fda7265f4743ceeb9759f23947

$ cat /mnt/etc/machine-id
cat: /mnt/etc/machine-id: No such file or directory

$ sudo umount /mnt
$ sudo qemu-nbd -d /dev/nbd0

I think we should unlink /var/lib/dbus/machine-id.