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feat: multi-distro support and tagged golden snapshots

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Add Alpine, Debian, and Ubuntu rootfs support to `init [distro]`.
Golden snapshots are now namespaced under `golden/<tag>/` so multiple
baselines can coexist. `spawn [tag] [N]` selects which snapshot to
clone from. Systemd-based distros (Debian, Ubuntu) get a fc-net-init
systemd unit; Alpine keeps its inittab-based init.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Honza Novak
2026-04-14 20:48:43 +00:00
parent bfc1f47287
commit fb1db7c9ea
10 changed files with 576 additions and 102 deletions
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21
test_mmds_restore.sh Normal file
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#!/bin/bash
sock="/tmp/fctest2.sock"
rm -f "$sock"
firecracker --api-sock "$sock" >/dev/null 2>&1 &
FCPID=$!
sleep 1
# Start a VM basically
curl --unix-socket "$sock" -s -X PUT "http://localhost/machine-config" -d '{"vcpu_count": 1, "mem_size_mib": 128}'
curl --unix-socket "$sock" -s -X PUT "http://localhost/network-interfaces/1" -d '{"iface_id": "1", "guest_mac": "AA:FC:00:00:00:01", "host_dev_name": "lo"}'
curl --unix-socket "$sock" -s -X PUT "http://localhost/mmds/config" -d '{"version": "V1", "network_interfaces": ["1"], "ipv4_address": "169.254.169.254"}'
curl --unix-socket "$sock" -s -X PUT "http://localhost/boot-source" -d '{"kernel_image_path": "/tmp/fc-orch/vmlinux", "boot_args": "console=ttyS0 reboot=k panic=1 pci=off"}'
curl --unix-socket "$sock" -s -X PUT "http://localhost/actions" -d '{"action_type": "InstanceStart"}'
# Pause
curl --unix-socket "$sock" -s -X PATCH "http://localhost/vm" -d '{"state": "Paused"}'
# TRY TO CONFIGURE MMDS
curl --unix-socket "$sock" -i -X PUT "http://localhost/mmds/config" -d '{"version": "V1", "network_interfaces": ["1"], "ipv4_address": "169.254.169.254"}'
kill $FCPID