On Mon, Jan 07, 2019 at 04:04:24PM -0500, John Harris wrote:
On Monday, January 7, 2019 3:18:10 PM EST Lennart Poettering wrote:
> hence my recommendation to derive the any uuid for purposes like this
> from /etc/machine-id, by using a HMAC of some kind (see other mail).
I really don't think that this should be derived in any way from a machine id,
if it really is meant to be used for counting users, rather than tracking.
Please read the man page . The machine id cannot be derived from
this number. On the other hand, using a derived UUID for this makes it
easier to wipe identifying information from an image, because there is
still just the one /etc/machine-id file that needs to be wiped.