I would like to know how I should resolve the current issues.
I'd probably try booting with
init=/bin/bash on the kernel command line (ie do it from the grub menu if possible), which will interrupt the loading process for the whole system and dump you into a terminal prompt instead. eg it tells the system to run
bash instead of loading the standard init system. Oh, you'll have to tell grub to mount the filesystem read-write too, rather than read only.
For systems that boot with grub, it's a useful fallback approach for situations where the boot is playing up.
If that works, then I'd probably try and figure out what the names of the network devices are supposed to be, then add them to the
/etc/network/interfaces file.
The
lshw -c network command
might give you the required info, but
lshw isn't installed by default on Proxmox.
If you can somehow install the package for
lshw (and probably the
usb.ids package it depends on as well), then it'll give you the network device names you need. Here's an example from my desktop system:
Bash:
# lshw -c network
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:06:00.0
logical name: enp6s0
version: 15
serial: a8:a1:59:61:97:52
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=6.5.13-5-pve duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:34 ioport:d000(size=256) memory:fc404000-fc404fff memory:fc400000-fc403fff
The "logical name" line has the name of the ethernet device in this system, and is what's used in the system's
/etc/network/interfaces file.
