Why did my Proxmox VE randomly disconnect and stay disconnected?

[Dabugsta99]

Hi, all! I've had my PVE up for maybe 4 or 5 months. Last night I noticed I couldn't access it anymore. I figured it was just rebooting or doing something strange. Well, now that I'm investigating, I have no idea what's wrong. Keep in mind, I am newer at this, but nothing changed, except it's not working now lol. It is plugged in over Ethernet and when I reboot it isn't even recognized. My router just noted that "server" disconnected at 23:05.

I've rebooted the PVE computer, unplugged ethernet, tried different ports (keep in mind, everything was working 2 days ago), rebooting my router, etc. I can't SSH in, I can't access via web. I can't ping google on the PVE device.

Any help with getting this back online? I realize there's not a lot of information here, but I'm willing to hash it out with someone if they'd help

 

[Dunuin]

First, connect a display+keyboad to see what is going on. Having a look at the system log using the journalctl command would help as well as ip a.

 

[Dabugsta99]

Thanks for the suggestion! Sorry for the late reply! Here's the error that it's giving me (repeatedly, assumedly due to retrying):
"CIFS: VFS: \\[ip address]\data BAD_NETWORK_NAME: \\[ip address]\data
CIFS: VFS: reconnect tcon failed rc = -2

NFS: state manager: check lease failed on NFSv4 server [ip address] with error 13
NFS: state manager: check lease failed on NFSv4 server [ip address] with error 13"

And then repeats. Every so often throwing in "'data' is not online"

 

[Dabugsta99]

Update for anyone who finds this later on: SOMEHOW, my "bridge doesn't have any bridge ports configured." My solution ended up being: Running nano /etc/network/interfaces and replace "none" with "eno1". Somehow they got disconnected! Just rebooted the system and it's working