Our configuration is:
One central manager
One access point
Around 50 combined submit / execute nodes
A handful (around 8) execute only nodes
I tried upgrading the central manager from 10 to 23, and it all went kaput. Since the central manager is virtual I was able to restore the central manager to its 10 version and the system worked again.
Is there a different order I should be upgrading 10 to 23 in?