I tried the omv-release-upgrade path from 6 to 7. After a long two hour plus slog in the shell it appeared to complete without any obvious errors, but I didn't sit there and watch the whole thing scroll by.
After a reboot, I tried to login to the Web GUI but it throws a 502 - Bad Gateway error in a red box at the bottom of the screen.
All my dockers are running, shares work, and i can ssh in. Just no GUI.
Any ideas as to where to start debugging this?
Thanks