PVE is not reachable

[karlstahl]

Hello folks,

I stupidly made a fool of myself in proxmox under /etc/networking/Interface. I have two network adapters and thought I could define which one is the primary adapter.

The result is that I can no longer access the pve. In the router I see that the proxmoxserver has assigned an IP. The VMs are also accessible and I can operate them (e.g. RDP)

But I can't get to the administration page. I then connected the monitor and keyboard.

I actually expected the local login mask. Unfortunately this doesn't appear. I only see this (screenshot)


Do any of you have any advice?

Thank you.

PS: I didn't think it would have such an impact. Grr.

 

[karlstahl]

Here are some details about my nonsense (please don't blame me )

But first, some more information:

I see the IP of the VMs as well as the IP of the Proxmox server in the router.
VM:
Proxmox server:

Note: Here is an example screenshot. Not from the system that I can no longer access. Because I can't achieve it.


I changed three entries in /etc/network/interfaces.d:

I swapped the bridge ports on vmbr0 and vmbr1. Because I thought that this would allow me to swap the primary network adapter. In addition, I changed the gateway 192.168.178.1 from vmbr0 to vmbr1 (i.e. deleted it from vmbr0 and entered it into vmbr1). Seemingly stupid idea. Then I restarted the network service and I could no longer access the proxmox pve. https://192.168.178.106:8006/

I thought that I would log in locally (monitor and keyboard directly to the Proxmox server) to undo it. Unfortunately no. The login mask doesn't appear. It hangs while booting. But the strange thing is that it starts all the VMs. They are all accessible and working.

Apparently it was pretty stupid.

 

[karlstahl]

Hello,

I solved the problem.

The lack of the login prompt was due to grub. I removed the following from there:

quiet intel_iommu=on i915.enable_gvt=1 iommu=pt pcie_acs_override=downstream,multifunction video=efifbff video=vesaff vfio_iommu_type1.allow_unsafe_interrupts=1 kvm.ignore_msrs=1 modprobe.blacklist=radeon,nouveau,nvidia,nvidiafb,nvidia-gpu

After that I was able to log in and rewrite the /etc/network/interfaces. The problem was that the same bridge entry was stored for both network interfaces. I have now corrected it and can access the pve again.

Thanks for your help anyway.