feat: 2홉 구성 진행

deploy/lab/scripts/rebuild-seed.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+# Rebuild a guest's cloud-init seed image and publish it into the libvirt pool.
+# Run on the lab host.
+#
+#   ./rebuild-seed.sh 1
+#
+# The same content lives in three places: the source YAML, the ISO, and the
+# uploaded pool volume. Editing the YAML alone changes nothing, which is why
+# this is a script and not a set of remembered commands.
+#
+# A rebuilt seed only takes effect on a freshly created VM. cloud-init runs its
+# per-instance modules once per instance-id, so an existing guest ignores it.
+set -euo pipefail
+
+N="${1:?usage: rebuild-seed.sh <1|2>}"
+CLOUD_DIR="${CLOUD_DIR:-$HOME/workspace/cloud}"
+POOL="${POOL:-default}"
+export LIBVIRT_DEFAULT_URI="${LIBVIRT_DEFAULT_URI:-qemu:///system}"
+
+cd "$CLOUD_DIR"
+src="kc-lab-${N}.yaml"
+iso="seed-kc-lab-${N}.iso"
+meta="meta-kc-lab-${N}"
+
+[ -f "$src" ] || { echo "missing $CLOUD_DIR/$src" >&2; exit 1; }
+
+# A fresh instance-id makes cloud-init treat the guest as new and re-run the
+# per-instance modules.
+printf 'instance-id: kc-lab-%s-%s\nlocal-hostname: kc-lab-%s\n' \
+  "$N" "$(date +%s)" "$N" > "$meta"
+
+# NoCloud looks for a volume labelled cidata holding files named exactly
+# user-data and meta-data. -graft-points renames them inside the image so no
+# staging directory is needed.
+xorrisofs -quiet -output "$iso" -volid CIDATA -joliet -rock -graft-points \
+  "/user-data=${src}" "/meta-data=${meta}"
+
+size="$(stat -c%s "$iso")"
+virsh vol-delete --pool "$POOL" "$iso" >/dev/null 2>&1 || true
+virsh vol-create-as "$POOL" "$iso" "$size" --format raw >/dev/null
+virsh vol-upload --pool "$POOL" "$iso" "$iso"
+
+echo "$iso published to pool '$POOL' ($size bytes)"
+echo "attach it as a virtio disk, not a SATA cdrom:"
+echo "  --disk vol=${POOL}/${iso},device=disk,bus=virtio,readonly=on"
+echo "Debian genericcloud images carry no AHCI driver, so a SATA cdrom is invisible"
+echo "to the guest and cloud-init fails with no error anywhere."