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# aria2c 'https://cloud-images.ubuntu.com/focal/20231003/focal-server-cloudimg-amd64.img' -x2
# https://medium.com/@art.vasilyev/use-ubuntu-cloud-image-with-kvm-1f28c19f82f8
cp template/*-data .
genisoimage -output initimg.iso -volid cidata -joliet -rock user-data meta-data
qemu-img create -f qcow2 -F qcow2 -o backing_file=base/focal-server-cloudimg-amd64.img instance-1.qcow2
qemu-img resize instance-1.qcow2 60G
qemu-system-x86_64 -drive file=instance-1.qcow2,if=virtio -cdrom initimg.iso -m 8G -cpu host -smp 4 -vnc :5 --enable-kvm -bios /usr/share/edk2-ovmf/x64/OVMF.fd
function generate_metadata () {
local name=$1
echo "local-hostname: $name"
}
function generate_userdata () {
local username=$1
local password=$2
local name=$3
# TODO: allow public key?
echo "#cloud-config
system_info:
default_user:
name: $username
home: /home/$username
password: $password
chpasswd: { expire: False }
hostname: $name
# configure sshd to allow users logging in using password
# rather than just keys
ssh_pwauth: True
"
}
workdir=./data
mkdir -p "$workdir/base" "$workdir/vm" "$workdir/tmp"
function create_vm_from () {
local name=$1
local cores=$2
local ram=$3
local disk=$4
local cloudimg=$5
local username=$6
local password=$7
local vnc=$8
local ports="$9"
if [[ -f "$workdir/vm/$name/disk.img" ]]; then
# simply start it
return
else
# create and start it
generate_metadata "$name" > "$workdir/vm/$name/meta-data"
generate_userdata "$username" "$password" "$name" > "$workdir/vm/$name/user-data"
( cd "$workdir/vm/$name" ; genisoimage -output initimg.iso -volid cidata -joliet -rock user-data meta-data )
qemu-img create -f qcow2 -F qcow2 -o backing_file=base/focal-server-cloudimg-amd64.img "$workdir/vm/$name/disk.img"
qemu-img resize "$workdir/vm/$name/disk.img" "$disk"
qemu-system-x86_64 -drive file="$workdir/vm/$name/disk.img",if=virtio -cdrom "$workdir/vm/$name/initimg.iso" -m "$ram" -cpu host -smp "$cores" -vnc "$vnc" --enable-kvm -bios /usr/share/edk2-ovmf/x64/OVMF.fd -net nic,model=rtl8139 -net user,hostfwd=tcp::30472-:22 &