Comment by DasIch

I don’t understand your argument. If you have lots of clusters, surely you’re upgrading using some kind of CD mechanism. So it shouldn’t make a difference in time to upgrade.

Zalando (disclaimer I work there, though not on K8S infrastructure. I just deploy to K8S) does upgrades this way: https://m.youtube.com/watch?v=1xHmCrd8Qn8