Installing Mikrotik RouterOS on Proxmox VE easily

proxmox-mikrotik-template.sh

#!/bin/bash
# Adapted from https://www.apalrd.net/posts/2023/tip_routeros/

set -e

# https://mikrotik.com/download
VERSION="7.14.2"
VM_ID="940"

wget --no-clobber "https://download.mikrotik.com/routeros/$VERSION/chr-$VERSION.img.zip"
unzip -n chr-$VERSION.img.zip
qm create $VM_ID --name "temp-mikrotik-ros-$VERSION" --ostype l26
qm set $VM_ID --net0 virtio,bridge=vmbr0
qm set $VM_ID --serial0 socket --vga serial0
#Yes, really, this is how little RAM it needs
qm set $VM_ID --memory 256 --cores 2 --cpu host
#Import the disk as scsi0, default boot order, resize up to 8G
qm set $VM_ID --scsi0 local-lvm:0,import-from="$(pwd)/chr-$VERSION.img",discard=on
qm set $VM_ID --boot order=scsi0 --scsihw virtio-scsi-single
qm disk resize $VM_ID scsi0 8G
#Make it a template
qm template $VM_ID

rm chr-$VERSION.img