The nodejs server can go down when it is up and running for more than a couple of days. And I'm pretty sure this will happen often with users as they will tend to have clusters maintained over a period of time.
Currently when the nodejs server goes down, the UI is not useable - the Dev & Ops sections are blank screens while the Admin section is available but does not save any changes. A user has no info on what to do in this scenario.
The UI should handle this situation better.