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#!/bin/bash
# takes in vm name, os type, vcpu, ram, disk as argument
# takes in already generated seed iso and downloaded vm.iso file
# default values
vcpu=8
ram_gb=4
disk_gb=32
os="fedora40.qcow2"
# parse arguments
while [[ $# -gt 0 ]]; do
case $1 in
--vcpu)
vcpu="$2"
shift 2
;;
--ram)
ram_gb="$2"
shift 2
;;
--disk-size)
disk_gb="$2"
shift 2
;;
--image)
os="$2"
shift 2
;;
*)
# Handle positional arguments (vmname and os)
if [ -z "$vmname" ]; then
vmname="$1"
else
echo "Unknown argument: $1"
exit 1
fi
shift
;;
esac
done
# Check mandatory arguments, basicaly checking for initial 1 argument. if it dont exist, vmname will be null
# image is os!!
if [ -z "$vmname" ] ; then
echo "Usage: $0 <vm-name> [--image <os>.qcow2] [--vcpu N] [--ram N] [--disk-size N]"
echo "seed.iso and image file have to be present! Default os is fedora"
echo ""
echo "Available images:"
sudo ls /var/lib/libvirt/images/.image_store
exit 1
fi
scriptdir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" #&& echo $scriptdir
workingdir="/var/lib/libvirt/images/.temp"
seed_iso="${workingdir}/seed.iso"
xml="${workingdir}/xml"
image_dir_path="/var/lib/libvirt/images/.image_store"
src_file="${image_dir_path}/${os}"
new_vm_dir="/var/lib/libvirt/images/${vmname}"
new_vm="${new_vm_dir}/${vmname}.qcow2"
if [ ! -f "${src_file}" ]; then
echo -e "${os} image file is cannot be found. please make it available in ${image_dir_path}"
exit 1
fi
# run the script to make the cloud init files
sudo bash "${scriptdir}/../.config/cloud-init-files/$(basename "$os" .qcow2).sh" "${vmname}"
sudo mkdir -p $new_vm_dir
sudo cp "$src_file" "$new_vm" &> /dev/null || { echo "Failed to create a new image."; exit 1; }
if sudo virsh list --all | awk "\$2==\"$vmname\"" | grep -q .; then
echo -e "\n$vmname already exist. Delete it before using the same name."
exit 1
fi
sudo virt-install --name $vmname \
--vcpus $vcpu \
--memory "$((ram_gb * 1024))"\
--disk path=$new_vm,format=qcow2 \
--disk path=$seed_iso,device=cdrom \
--os-type linux \
--os-variant $(basename "$os" .qcow2) \
--virt-type kvm \
--graphics none \
--network bridge=virbr0,model=virtio \
--print-xml > $xml || { sudo rm -rf $new_vm_dir; exit 1; }
sudo virsh define $xml #&> /dev/null || { echo "Failed to define the new VM."; exit 1; }
sudo qemu-img resize $new_vm +$disk_gb"G" #&> /dev/null
sudo virsh start $vmname
sudo rm "${workingdir}"/*
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