Ist zwar alles schon (implizit) erwähnt worden, aber vielleicht nochmal explizit: Durch sorglosen Umgang kann man seine Ubuntu-Pro-Lizenzen nicht "verbrauchen".
Quelle: diese Antwort des Supports in den Ubuntu Pro FAQ
There are well written instructions to ATTACH a machine to my free Ubuntu Pro subscription token. However, it seems logical that the instructions to reverse the process ( DETACH a machine ) should also be available. I’ve searched everywhere, but I couldn’t find anything. I frequently uninstall and then reinstall Ubuntu flavors, such as Xubuntu and so on. If I don’t DETACH a machine before wiping out the installation instance, wouldn’t that mean I’ll run out of my 5 free ATTACHed machines pretty quickly? I’m not sure how to handle this! Please make it a part of the FAQ, if you wish. Thank you.
Thank you, that’s a great question.
Technically, you can detach a subscription, same way you attach it. simply use ‘sudo pro detach’ command.
That said, it’s possible that you’d get rid of a VM without detaching a subscription. Then, you might struggle to find a way to detach it.
This is why we don’t prevent you from attaching more machines than the number of entitlements you have (either free or paid). Instead, we monitor how many active machines you have at any given moment. In other words, you should ensure that the number of active machines does not go over the limit.