Proxmox 8 - Not able to access WebGUI or SSH

[arkkraken]

Proxmox noob here. Very excited to learn and use Proxmox.

My setup: Installed Proxmox on a PC, added VMs for - Ubuntu, Windows; installed Jellyfin on an LXC container.
Tried GPU passthrough based on YouTube videos. Did not enable SPICE or RDP yet!
I have a monitor, keyboard and mouse attached to the PC.

Issue: Not able to access WebGUI or SSH into my Proxmox instance.
The other day, I was not able to login to WebGUI; the wheel was spinning for a long time. So, I restarted the machine, disconnected and reconnected the ethernet cable.
Also, there was a power outage in the neighborhood and all systems, devices restarted again.
I think my pfsense router reassigned Proxmox's IP address and now I am not able to login via WebGUI or SSH.

My attempts at resolving this:

• I looked up online and found I need to edit the IP address in /etc/network/interfaces ... but I cannot access it.
• While booting current Proxmox installation, I tried rescue mode, but its stuck at "mounting sys-fs-fuse-connections.mount - FUSE Control File System".
• I tried creating a Proxmox boot thumb drive, advanced options -> Rescue Boot. But this did not work either!
• I somehow managed to get to a GRUB> command line where I was able to cat > /etc/network/interfaces and see the IP address, but looks like the limited commands supported in this do not allow editing (or I don't know the right command/process to edit).

I can reinstall Proxmox and recreate everything from scratch, but that's not a good option, should I encounter this problem in the future when I have significant data in the VMs. Pls help.

 

[bbgeek17]

My setup: Installed Proxmox on a PC, added VMs for - Ubuntu, Windows; installed Jellyfin on an LXC container.

So, I read it as "you were able to access proxmox initially".

Also, there was a power outage in the neighborhood and all systems, devices restarted again.
I think my pfsense router reassigned Proxmox's IP address and now I am not able to login via WebGUI or SSH.

Can you not login from the physical console?

I somehow managed to get to a GRUB> command line where I was able to cat > /etc/network/interfaces and see the IP address, but looks like the limited commands supported in this do not allow editing (or I don't know the right command/process to edit).

Can you clarify, does Proxmox boot normally to user/password prompt?

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Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[arkkraken]

Yes, I was able to login to Proxmox WebGUI initially.

When I boot into my Proxmox installation and connect the monitor, mouse and keyboard, all I see is a blank screen. I don't see the Proxmox# prompt waiting for ID & Pwd like it did at the time of installation. I am guessing this is due to GPU passthrough.

 

[arkkraken]

I just rebooted the machine. Here is what I see on the connected monitor:

x86/cpu: SGX disabled by BIOS.
Found volume group "pie" using metadata type lvm2.
3 logical volume(s) in volume group "pve" now active
/dev/mapper/pve-root: recovering journal
/dev/mapper/pve-root: clean, x/y files, a/b blocks

 

[bbgeek17]

May be its a GPU/autostart issue. You can follow this guide: https://pve.proxmox.com/wiki/Root_Password_Reset
After mounting root, instead of doing passwd change, cd into /etc/pve/qemu , then "mv [id].conf /root".
This should prevent automatic VM start and let you get normal console access.

Also, if your hypervisor is dependent on a VM (pfsense) giving out IPs, that may be something you should consider changing. The hypervisor should, ideally, be static.

Good luck

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Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox