…yup, it sure has a bug or two.
I've been trying to set it back up without affecting the half-working appliance.
First I tried launching the original installer to upgrade it in place, like I did from 6.7 to 7, but it didn't let me, I needed to go up or no-go. I downloaded the newer version from VMware and it still wouldn't work because even though it's a newer build it's the same version.
I tried creating a new appliance and I made the mistake of joining it to the SSO domain because I thought it would be easier to move the cluster to the new appliance, it failed.
I tried recovering, this time it would not let me because it needed to be the exact same version and I used the newer build I had just downloaded.
Then, I used the same version and it kept making such a fuss of using the same data as the appliance currently live on the cluster. I relented and gave it another IP address, only to have at the very end a message telling me I could now shut down the other appliance. Why the fuss then? Doing things without vCenter and DRS off is way more difficult. I managed though, I had to change IP addresses. It failed restoring.
I did it again, to the book, it failed restoring again.
I thought f***-it and started a new appliance from scratch, with the new build, and though it's now running alongside the old one. I accessed its Management to shut it down and snapshot it before trying for the last time to restore it, and Management showed this:

I panicked there for a minute but it went away in private mode, I'm recycling addresses, so something must have been left from my previous attempts. :smileyhappy:
It's now off so, here I go…