Refactor

packer/qemu/http/seed/meta-data

@@ -0,0 +1,2 @@
+instance-id: "instance0"
+local-hostname: "localhost"

packer/qemu/http/seed/user-data

@@ -0,0 +1,9 @@
+#cloud-config
+
+ssh_pwauth: true
+disable_root: false
+chpasswd: { list: ["root:toor"], expire: false }
+
+runcmd:
+  - printf '%s\n' 'PermitRootLogin yes' >> /etc/ssh/sshd_config
+  - systemctl restart ssh.service

packer/qemu/start-vm.sh

@@ -0,0 +1,34 @@
+#!/bin/sh
+
+set -eu
+export LC_ALL=C
+
+SRC_DIR=$(dirname "$(readlink -f "$0")")
+TMP_DIR=$(mktemp -d)
+trap 'rm -rf "${TMP_DIR:?}"' EXIT
+
+CLOUDIMG_DISK=${SRC_DIR:?}/packer_output/wireguard.qcow2
+SNAPSHOT_DISK=${TMP_DIR:?}/cloudinit-snapshot.qcow2
+USERDATA_DISK=${TMP_DIR:?}/cloudinit-seed.img
+USERDATA_YAML=${TMP_DIR:?}/user-data
+
+# Create a snapshot image to preserve the original cloud-image
+qemu-img create -b "${CLOUDIMG_DISK:?}" -f qcow2 "${SNAPSHOT_DISK:?}"
+qemu-img resize "${SNAPSHOT_DISK:?}" +2G
+
+# Create a seed image with metadata using cloud-localds
+printf '%s\n' '#cloud-config' 'runcmd: ["ssh-import-id gh:hectorm"]' > "${USERDATA_YAML:?}"
+cloud-localds "${USERDATA_DISK:?}" "${USERDATA_YAML:?}"
+
+# Remove keys from the known_hosts file
+ssh-keygen -R '[127.0.0.1]:2222'
+ssh-keygen -R '[localhost]:2222'
+
+# Launch VM
+kvm \
+	-smp 1 -m 512 \
+	-nographic -serial mon:stdio \
+	-device e1000,netdev=n0 \
+	-netdev user,id=n0,hostfwd=tcp::2222-:22,hostfwd=udp::51820-:51820 \
+	-drive file="${SNAPSHOT_DISK:?}",if=virtio,format=qcow2 \
+	-drive file="${USERDATA_DISK:?}",if=virtio,format=raw