proxmox: moving to linux and adding motherboard swap nic error

wiki/linux/proxmox.md

@@ -0,0 +1,67 @@
+# Proxmox
+
+Proxmox is an environment for virtual machines and containers.
+
+## Disk Management
+
+### Enlarging disk of a VM
+
+SSH into Proxmox.
+Enlarge a disk by using:
+
+```shell
+qm resize <vmid> <vm-disk-to-enlarge> <size>
+```
+
+For example:
+
+```shell
+qm resize 100 ide0 +100G
+```
+
+After that grow the filesystem as described in [the disk-management article](linux/disk-management.md).
+
+## VM passthrough
+
+### USB passthrough
+
+On the host system find the usb you're looking to pass through with
+
+```shell
+lsusb
+```
+
+Then assign it to the vm using
+
+```shell
+qm set <vm-id> -usb<id-to-set> host=<id-of-the-usb>
+```
+
+for example
+
+```shell
+qm set 101 -usb0 host=aaaa:8816
+```
+
+### PCI/GPU passthrough
+
+To use GPUs or other PCI devices you need to work with PCI passthrough.
+For documentation you can look in the [Proxmox wiki](https://pve.proxmox.com/wiki/Pci_passthrough).
+There is also an [article](https://www.reddit.com/r/homelab/comments/b5xpua/the_ultimate_beginners_guide_to_gpu_passthrough)
+on reddit, that focusses especially on windows 10 VMs with GPU passthrough.
+
+## Bugfixing
+
+### No internet after mainboard swap
+
+If you change the mainboard of your proxmox-virtual-environment it is possible,
+that the NIC changes.
+Find out the new interface name with `ip a`.
+After that get all occurences of the interface (`eth0` in the example) with
+`rgrep eth0 /etc` and change them to the new device with a text editor of your
+choice.
+It is possible that there are also files existing that need to be renamed.
+Find them with `find /etc -change '*eth0*'` and move them to the new name.
+After that `reboot` and the internet should be up again.
+(sources: [debian website](https://wiki.debian.org/NetworkInterfaceNames) and
+[proxmox forum](https://forum.proxmox.com/threads/upgrade-motherboard-reinstall.48630))