I recently had a problem with Godaddy ubuntu 16.04 VPS, after updating and upgrading the system:
apt-get update apt-get upgrade reboot
SSH port is not anymore reachable which is tragic, it’s the only access we have to the server, however other services are working normally, so the system is still running. I tried many times to restart, call the support, but it didn’t solve my problem. The only solution was to destroy the server and rebuild it from scratch + restoration of backups.
I’ve also tested the upgrade with a clean and freshly installed system, same issue occurred. If you’re running Ubuntu 16.04 VPS on Godaddy, Do not fully upgrade your system with apt-get upgrade or you’ll waste hours to restore your server.