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Bag of hacks to get local libvirt working

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This commit is contained in:
3wc
2021-07-14 00:42:28 +02:00
parent 2e6894ad14
commit a580b04659
4 changed files with 20 additions and 18 deletions
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6
capsulflask/shell_scripts/capacity-avaliable.sh
View File

@ -3,7 +3,7 @@
# check available RAM and IPv4s
ram_bytes_to_allocate="$1"
ram_bytes_available=$(grep -E "^(size|memory_available_bytes)" /proc/spl/kstat/zfs/arcstats | awk '{sum+=$3} END {printf "%.0f", sum}')
ram_bytes_available="$(($(grep Available /proc/meminfo | grep -o '[0-9]*') * 1024))"
ram_bytes_remainder="$((ram_bytes_available - ram_bytes_to_allocate))"
if echo "$ram_bytes_to_allocate" | grep -vqE "^[0-9]+$"; then
@ -11,8 +11,8 @@ if echo "$ram_bytes_to_allocate" | grep -vqE "^[0-9]+$"; then
exit 1
fi
# 20GB
if [ "$ram_bytes_remainder" -le $((20 * 1024 * 1024 * 1024)) ]; then
# 0.25GB
if [ "$ram_bytes_remainder" -le $((1 * 1024 * 1024 * 1024 / 4)) ]; then
echo "VM is requesting more RAM than $(hostname -f) has available."
echo "Bytes requested: $ram_bytes_to_allocate"
echo "Bytes available: $ram_bytes_available"

23
capsulflask/shell_scripts/create.sh
View File

@ -6,6 +6,7 @@
vmname="$1"
template_file="/tank/img/$2"
qemu_tank_dir="/home/f/Projects/Cyberia/tank"
vcpus="$3"
memory="$4"
pubkeys="$5"
@ -50,40 +51,40 @@ if echo "$public_ipv4" | grep -vqE "^[0-9.]+$"; then
exit 1
fi
disk="/tank/vm/$vmname.qcow2"
cdrom="/tank/vm/$vmname.iso"
xml="/tank/vm/$vmname.xml"
disk="$vmname.qcow2"
cdrom="$vmname.iso"
xml="$vmname.xml"
if [ -f /tank/vm/$vmname.qcow2 ]; then
echo "Randomly generated name matched an existing VM! Odds are like one in a billion. Buy a lotto ticket."
exit 1
fi
cp "$template_file" "$disk"
cp "$template_file" "/tank/vm/$disk"
cp /tank/config/cyberia-cloudinit.yml /tmp/cloudinit.yml
echo "$pubkeys" | while IFS= read -r line; do
echo " - $line" >> /tmp/cloudinit.yml
done
cloud-localds "$cdrom" /tmp/cloudinit.yml
cloud-localds "/tank/vm/$cdrom" /tmp/cloudinit.yml
qemu-img resize "$disk" "$root_volume_size"
qemu-img resize "/tank/vm/$disk" "$root_volume_size"
virt-install \
--memory "$memory" \
--vcpus "$vcpus" \
--name "$vmname" \
--disk "$disk",bus=virtio \
--disk "$cdrom",device=cdrom \
--disk "$qemu_tank_dir/vm/$disk",bus=virtio \
--disk "$qemu_tank_dir/vm/$cdrom",device=cdrom \
--os-type Linux \
--os-variant generic \
--virt-type kvm \
--graphics vnc,listen=127.0.0.1 \
--network network=$network_name,filterref=clean-traffic,model=virtio \
--import \
--print-xml > "$xml"
--print-xml > "/tank/vm/$xml"
chmod 0600 "$xml" "$disk" "$cdrom"
virsh define "$xml"
chmod 0600 "/tank/vm/$xml" "/tank/vm/$disk" "/tank/vm/$cdrom"
virsh define "/tank/vm/$xml"
virsh start "$vmname"
echo "success"