I’m encountering a critical issue with my server involving JupyterHub, nbgrader, and PostgreSQL. Here’s the situation:

I was installing PostgreSQL on my server which is also used for running a JupyterHub and an nbgrader service. The installation of PostgreSQL went fine. I used the following commands:

sudo dnf module enable postgresql -y
sudo dnf install postgresql-server -y

While initializing the PostgreSQL database for nbgrader, the server crashed:

sudo postgresql-setup --initdb

Now, I’m unable to establish an SSH connection to the server.
At first, the server was reachable when sending a ping and port 22 was still open as well. A couple of hours later, the server is not reachable at all.

I am not able to restart the server as it is part of my University’s cluster, so I have no access to it at the moment.

Questions:

1.Could the crash be due to excessive load from running all these services on one machine?
2.What troubleshooting steps can I take to diagnose the issue without SSH access? Are there any common pitfalls when setting up PostgreSQL alongside JupyterHub and nbgrader that might have caused this?
3- How can I safely recover my server and data?

Any insights or suggestions would be greatly appreciated.

System specs:

Rocky Linux 8.7
CPU: 2x Intel Xeon E5-2630Lv4
RAM: 8x 32GB
SSD: 1x 7680GB

Thank you in advance for any help!

I tried reaching the server via ping, checked if the port for communication was open and reached out for the server administrator.