launch-vm

#!/bin/bash

SERVER="$1"
RELEASE="$2"
NAME="$3"
GROUP="$4"
IP="$5"
GW="$6"
KEY="$7"

case "$GROUP" in
	"dev")
		KEY+=$'\n'
		KEY+="ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBMCBYZIgMwjph+MuXycHXknE0mgIg8DdAB+hP6Nh9JoGy1unp9DxgZZ62iJ+ILXI/lH1P4lN1VBw1jcT1UaU9kc= ubuntu@dev"
		;;
	"prod")
		KEY+=$'\n'
		KEY+="ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBD1a8H1MNIx3Glwf/yOaQ7wx+EV8dFqsflTqyMSpzA/9in5BmuZAyi/VVSZYz0w9htgIj9tVvcTBZi/xmozcPs8= ubuntu@prod"
		;;
esac

POOL="ssd"

cat << EOF > /tmp/launch-vm.sh
#!/bin/bash
set -x
set -e

zfs clone "\`zfs list -t all | grep hirsute | tail -n1 | cut -f1 -d' '\`" "$POOL/$GROUP-$NAME"
echo "Waiting for devices to settle..."
sleep 2

MNTDIR="/tmp/mnt_$GROUP-$NAME"

mkdir -p \$MNTDIR
growpart /dev/zvol/$POOL/$GROUP-$NAME 1
e2fsck -f /dev/zvol/$POOL/$GROUP-$NAME-part1
resize2fs /dev/zvol/$POOL/$GROUP-$NAME-part1
mount /dev/zvol/$POOL/$GROUP-$NAME-part1 \$MNTDIR

pushd /tmp > /dev/null
apt-get download qemu-guest-agent liburing1
dpkg --install --root=\$MNTDIR --admindir=\$MNTDIR/var/lib/dpkg *.deb
rm *.deb
popd > /dev/null

chroot \$MNTDIR /usr/sbin/adduser --home=/home/ubuntu --shell=/bin/bash --gecos=Ubuntu ubuntu --disabled-password
chroot \$MNTDIR /usr/bin/gpasswd -a ubuntu sudo
echo "ubuntu:ubuntu" | chroot \$MNTDIR /usr/sbin/chpasswd

mkdir \$MNTDIR/home/ubuntu/.ssh
echo "$KEY" >> \$MNTDIR/home/ubuntu/.ssh/authorized_keys

sed -i 's/%sudo.*/%sudo   ALL=(ALL) NOPASSWD: ALL/' \$MNTDIR/etc/sudoers

echo $NAME > \$MNTDIR/etc/hostname
sed -i 's/127.0.0.1 localhost/\0\n127.0.1.1 $NAME/' \$MNTDIR/etc/hosts
echo -e 'network:\n  version: 2\n  renderer: networkd\n  ethernets:\n    enp1s0:\n      addresses:\n      - $IP\n      gateway4: $GW\n      nameservers:\n        search: [$GROUP.vm.ea.home]\n        addresses: [172.19.255.254]\n' > \$MNTDIR/etc/netplan/00-default.yaml

chroot \$MNTDIR /usr/bin/ssh-keygen -A

umount \$MNTDIR
rmdir \$MNTDIR

virt-install --connect qemu:///system --virt-type kvm --name $GROUP-$NAME --ram 4096 --vcpus 4 --disk path=/dev/zvol/$POOL/$GROUP-$NAME,format=raw,bus=virtio --import --network network=net-$GROUP,model=virtio --noautoconsole --os-variant ubuntu20.04 --console pty,target_type=virtio --graphics none

echo

virsh dominfo $GROUP-$NAME

rm /tmp/launch-vm.sh
EOF

scp /tmp/launch-vm.sh $SERVER:/tmp/launch-vm.sh
ssh -t $SERVER sudo bash /tmp/launch-vm.sh

rm /tmp/launch-vm.sh