20-task TDD plan: integration_test substrate role, stdlib virsh driver, askari profile, tiered certs, RED->GREEN acceptance, docker_host container-forward fix, ADR-025 + docs. Follows the 2026-06-18 design spec. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
49 KiB
Local VM Integration Testing Implementation Plan
For agentic workers: REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (
- [ ]) syntax for tracking.
Goal: Give the agent a make test-integration HOST=<name> loop that boots a throwaway KVM VM on ubongo mirroring a real host, applies the real playbooks, performs a real reboot, and asserts outcomes — catching the reboot/firewall/Docker class Molecule cannot (the 2026-06-17 incident).
Architecture: A non-service integration_test role installs the libvirt/QEMU substrate on ubongo. A stdlib-only driver scripts/integration-vm.py orchestrates the lifecycle over virsh/virt-install/cloud-localds (golden Debian-13 image → ephemeral qcow2 overlay → cloud-init seed → boot → apply real playbooks via a single-host transient inventory → reboot → verify playbook → teardown). Stubs and cert-tiers are passed as Ansible -e @file extra-vars so the real inventory is never edited and the driver never parses YAML.
Tech Stack: Debian 13 (trixie), libvirt 11.3 / virt-install 5.0.0 / QEMU-KVM, cloud-init NoCloud (cloud-image-utils 0.33), Ansible, Caddy v2 (DNS-01 via the existing caddy-gandi image), Python 3 stdlib, pytest, Molecule (Docker).
Verified facts (ADR-014, 2026-06-18):
- Image:
https://cloud.debian.org/images/cloud/trixie/latest/debian-13-genericcloud-amd64.qcow2+SHA512SUMSalongside. Ships cloud-init; no qemu-guest-agent → get IP viavirsh domifaddr <dom> --source lease. - Seed:
cloud-localds seed.img user-data [meta-data](cloud-image-utils). Labelcidata. virt-install --import --disk path=...,format=qcow2 --disk path=seed.img,device=cdrom --network network=<net> --osinfo debian13 --graphics none --serial file,path=<log> --noautoconsole(packagevirt-install;virtinstis a transitional shim).- Isolated NAT net via
virsh net-define/net-start/net-autostart(own bridge+subnet,<forward mode='nat'/>). - Caddy:
acme_ca https://acme-staging-v02.api.letsencrypt.org/directory(global),tls internal(self-signed),tls { dns gandi {env.GANDI_BEARER_TOKEN} }(DNS-01; module already compiled into the bomacaddy-gandiimage). LE staging limits are effectively unlimited; use staging for routine cert tests.
Repo facts this plan extends:
roles/base/templates/nftables.conf.j2:21—chain forward { ... policy drop; }; line 26include "{{ base__firewall_dropin_dir }}/*.nft";base__firewall_dropin_dir: /etc/nftables.d. The drop-in include already exists —docker_hostjust needs to ship a.nftfile.base__firewall_applygates application (roles/base/tasks/firewall.yml:32-35).roles/docker_host/installs Docker only; no container-forward rules (the green-half fix).roles/reverse_proxy/templates/Caddyfile.j2— globalacme_dns gandi {env.GANDI_BEARER_TOKEN}whenreverse_proxy__acme_dns_provider == 'gandi'; per-site blocks; Gandi PAT viavault.gandi.pat→env.j2GANDI_BEARER_TOKEN. Noacme_caortls internalknob yet (this plan adds them).- askari:
inventories/production/offsite.yml(ansible_host: 77.42.120.136, groupoffsite_hosts);group_vars/offsite_hosts/vars.yml(base__firewall_apply: false,base__ssh_listen_mesh_only: false); routes ingroup_vars/all/reverse_proxy.yml. playbooks/site.yml(base→all, docker_host→docker_hosts) +playbooks/offsite.yml(docker_host→reverse_proxy→netbird_coordinator on offsite_hosts).- Makefile vars:
VENV PLAYBOOK_BIN INVENTORY VAULT_ARGS ROLE PLAYBOOK LIMIT TAGS. pytest intests/test_*.py(no conftest/pytest.ini; importlib-load of hyphenated scripts, seetests/test_firewall_rules.py:1-13). Tag vocabularytests/tags.yml;scripts/check-tags.pyrun bymake lint. - None of
roles/integration_test/,scripts/integration-vm.py,tests/integration/exist.
File Structure
Create:
roles/integration_test/— substrate role (defaults, tasks, handlers, meta, README, molecule/default/{molecule,converge,verify}.yml). Installs libvirt/QEMU/virt-install/cloud-image-utils; enableslibvirtd; addssjat/claudetolibvirt+kvmgroups; creates the image cache dir.scripts/integration-vm.py— stdlib-only driver. Pure helpers + impure orchestration + argparse CLI.tests/test_integration_vm.py— pytest for the driver's pure helpers.tests/integration/profiles/askari.json— driver-side profile metadata (groups, playbook+tags list, extra-vars files, mem/vcpu).tests/integration/overrides/askari.yml— Ansible stub extra-vars (firewall on, ssh break-glass).tests/integration/certs/{internal,le-staging,le-prod-wildcard}.yml— cert-tier extra-vars.tests/integration/verify.yml— outcome-based verify playbook.tests/integration/README.md— how the harness works.docs/decisions/025-local-vm-integration-testing.md— ADR.docs/runbooks/integration-testing.md— operator/agent runbook.
Modify:
roles/reverse_proxy/defaults/main.yml+templates/Caddyfile.j2— addreverse_proxy__tls_internal+reverse_proxy__acme_caknobs.roles/docker_host/defaults/main.yml+tasks/main.yml+ newtemplates/10-docker-forward.nft.j2— the container-forward drop-in (green-half).Makefile—test-integration,test-integration-cleantargets..gitignore—tests/integration/.run/,/integration-runs/is under $HOME (already outside repo).docs/decisions/008-testing.md,015-control-host.md;docs/security/accepted-risks.md;CLAUDE.md;STATUS.md;docs/TODO.md;docs/hardware/reference.md— pointers/entries.
Milestones: RED (Task 15: harness reproduces the incident) → GREEN (Task 16: docker_host fix survives reboot) → le-staging cert tier (Task 17) → governance/docs (Tasks 18-20).
Phase A — Substrate role
Task 1: integration_test role (libvirt/QEMU substrate)
Files:
-
Create:
roles/integration_test/{defaults,tasks,handlers,meta}/main.yml,roles/integration_test/README.md,roles/integration_test/molecule/default/{molecule,converge,verify}.yml -
Step 1: Scaffold
Run: make new-role NAME=integration_test
Expected: Role integration_test scaffolded at roles/integration_test/
- Step 2: defaults/main.yml
---
# integration_test — installs the local KVM/libvirt substrate on the control node
# (ubongo) so the agent can run throwaway VM integration tests (ADR-025). Non-service
# role; applied to the `control` group. Not a production hypervisor (ADR-015).
integration_test__packages:
- qemu-system-x86 # KVM
- qemu-utils # qemu-img (overlays)
- libvirt-daemon-system
- libvirt-clients # virsh
- virt-install # virt-install (trixie: the real pkg; `virtinst` is transitional)
- cloud-image-utils # cloud-localds (NoCloud seed)
- genisoimage # cloud-localds fallback
# Users granted libvirt/kvm access (run VMs without sudo).
integration_test__users:
- sjat
- claude
# Where the golden image + overlays live (outside the repo).
integration_test__cache_dir: "/var/lib/boma-integration"
- Step 3: tasks/main.yml
---
- name: Install the KVM/libvirt substrate
ansible.builtin.apt:
name: "{{ integration_test__packages }}"
state: present
update_cache: true
tags: [packages]
- name: Enable and start libvirtd
ansible.builtin.systemd:
name: libvirtd
enabled: true
state: started
tags: [config]
- name: Grant users libvirt + kvm access
ansible.builtin.user:
name: "{{ item }}"
groups: [libvirt, kvm]
append: true
loop: "{{ integration_test__users }}"
tags: [users]
- name: Create the integration cache dir
ansible.builtin.file:
path: "{{ integration_test__cache_dir }}"
state: directory
owner: root
group: libvirt
mode: "2775"
tags: [config]
-
Step 4: meta/main.yml (mirror
roles/dev_env/meta/main.yml: authorsjat, Debian/trixie,min_ansible_version: "2.17",dependencies: [], description naming ADR-025). handlers/main.yml stays---(no handlers). README.md: purpose, that it targets thecontrolgroup, links ADR-025/ADR-015. -
Step 5: molecule/default/molecule.yml — copy
roles/dev_env/molecule/default/molecule.ymlverbatim (same Debian-13 systemd image). -
Step 6: molecule/default/converge.yml
---
- name: Converge
hosts: all
become: true
gather_facts: true
roles:
- role: integration_test
- Step 7: molecule/default/verify.yml (assert install tasks — NOT libvirtd active, which cannot run KVM-in-Docker)
---
- name: Verify
hosts: all
become: true
gather_facts: false
tasks:
- name: Gather package facts
ansible.builtin.package_facts:
- name: Assert the substrate packages are installed
ansible.builtin.assert:
that:
- "'libvirt-clients' in ansible_facts.packages"
- "'virt-install' in ansible_facts.packages"
- "'cloud-image-utils' in ansible_facts.packages"
- "'qemu-system-x86' in ansible_facts.packages"
- name: Cache dir exists
ansible.builtin.stat:
path: /var/lib/boma-integration
register: _cache
- name: Assert cache dir
ansible.builtin.assert:
that: [_cache.stat.isdir]
- Step 8: Add the role to the control-node play. Edit
playbooks/workstation.yml(the control-node playbook that appliesdev_env) to also importintegration_testforcontrol. Confirm the exact play first:
Run: grep -n "dev_env\|hosts:\|control" playbooks/workstation.yml
Then add under the same control play's roles:
- role: integration_test
tags: [integration_test]
- Step 9: Lint + Molecule
Run: make lint
Expected: clean (new role-name tag integration_test auto-accepted by check-tags; concern tags packages/config/users are in tests/tags.yml).
Run: make test ROLE=integration_test
Expected: converge + idempotence + verify PASS.
- Step 10: Commit
git add roles/integration_test playbooks/workstation.yml
git commit -m "feat(integration_test): KVM/libvirt substrate role on the control node"
Phase B — Driver: pure helpers (TDD)
Task 2: Driver skeleton + constants + CLI dispatch
Files:
-
Create:
scripts/integration-vm.py -
Test:
tests/test_integration_vm.py -
Step 1: Write the failing test (
tests/test_integration_vm.py)
import importlib.util
import pathlib
_PATH = pathlib.Path(__file__).resolve().parent.parent / "scripts" / "integration-vm.py"
_spec = importlib.util.spec_from_file_location("integration_vm", _PATH)
ivm = importlib.util.module_from_spec(_spec)
_spec.loader.exec_module(ivm)
def test_valid_tiers():
assert ivm.VALID_TIERS == ("internal", "le-staging", "le-prod-wildcard")
- Step 2: Run it — fails (file missing)
Run: .venv/bin/pytest tests/test_integration_vm.py -q
Expected: FAIL (cannot load scripts/integration-vm.py).
- Step 3: Create the skeleton (
scripts/integration-vm.py)
#!/usr/bin/env python3
"""boma local-VM integration test harness driver (ADR-025).
Stdlib-only by convention (TODO-14): never imports a YAML library. The transient
inventory is emitted via string templates; stubs/cert-tiers reach Ansible as
`-e @<file>` extra-vars; profile metadata is JSON. Talks to libvirt via `virsh`.
"""
import argparse
import hashlib
import json
import os
import pathlib
import re
import shutil
import subprocess
import sys
import time
import urllib.request
import uuid
REPO_ROOT = pathlib.Path(__file__).resolve().parent.parent
CACHE_DIR = pathlib.Path(os.environ.get("BOMA_IT_CACHE", "/var/lib/boma-integration"))
IMAGE_URL = "https://cloud.debian.org/images/cloud/trixie/latest/debian-13-genericcloud-amd64.qcow2"
SHA_URL = "https://cloud.debian.org/images/cloud/trixie/latest/SHA512SUMS"
IMAGE_NAME = "debian-13-genericcloud-amd64.qcow2"
NET_NAME = "boma-it"
NET_XML = """<network>
<name>boma-it</name>
<forward mode='nat'/>
<bridge name='virbr-boma' stp='on' delay='0'/>
<ip address='192.168.150.1' netmask='255.255.255.0'>
<dhcp><range start='192.168.150.10' end='192.168.150.254'/></dhcp>
</ip>
</network>
"""
NAME_PREFIX = "boma-it-"
RUN_DIR = REPO_ROOT / "tests" / "integration" / ".run"
DIAG_ROOT = pathlib.Path.home() / "integration-runs"
PROFILE_DIR = REPO_ROOT / "tests" / "integration" / "profiles"
INTEG_DIR = REPO_ROOT / "tests" / "integration"
CERT_DIR = REPO_ROOT / "tests" / "integration" / "certs"
DEFAULT_MEM_MIB = 3072
DEFAULT_VCPUS = 2
MIN_FREE_MIB = 4096
VALID_TIERS = ("internal", "le-staging", "le-prod-wildcard")
def main(argv=None):
p = argparse.ArgumentParser(prog="integration-vm", description=__doc__)
sub = p.add_subparsers(dest="cmd", required=True)
for c in ("up", "apply", "reboot", "assert", "cycle", "down", "console"):
sp = sub.add_parser(c)
sp.add_argument("--host", required=True)
sp.add_argument("--certs", choices=VALID_TIERS, default="internal")
sp.add_argument("--keep", action="store_true")
sp.add_argument("--no-reboot", action="store_true")
sub.add_parser("prune")
args = p.parse_args(argv)
return DISPATCH[args.cmd](args)
if __name__ == "__main__": # pragma: no cover
sys.exit(main())
(Define DISPATCH = {...} after the command functions in later tasks; for now add a temporary DISPATCH = {} above main so import succeeds.)
- Step 4: Run — passes
Run: .venv/bin/pytest tests/test_integration_vm.py -q
Expected: PASS.
- Step 5: Commit
git add scripts/integration-vm.py tests/test_integration_vm.py
git commit -m "feat(integration-vm): driver skeleton + CLI dispatch"
Task 3: vm_name, free_mib, parse_lease_ip (TDD)
Files: Modify scripts/integration-vm.py, tests/test_integration_vm.py
- Step 1: Write failing tests
def test_vm_name_prefix_and_suffix():
assert ivm.vm_name("askari", "ab12cd34") == "boma-it-askari-ab12cd34"
def test_vm_name_generates_suffix():
n = ivm.vm_name("askari")
assert n.startswith("boma-it-askari-") and len(n.split("-")[-1]) == 8
def test_free_mib_parses_memavailable():
sample = "MemTotal: 16331156 kB\nMemAvailable: 8388608 kB\n"
assert ivm.free_mib(sample) == 8192
def test_parse_lease_ip_extracts_ipv4():
out = (" Name MAC address Protocol Address\n"
"-------------------------------------------------------------------\n"
" vnet0 52:54:00:aa:bb:cc ipv4 192.168.150.42/24\n")
assert ivm.parse_lease_ip(out) == "192.168.150.42"
def test_parse_lease_ip_none_when_absent():
assert ivm.parse_lease_ip("no leases\n") is None
-
Step 2: Run — fail.
.venv/bin/pytest tests/test_integration_vm.py -q→ FAIL (no attrs). -
Step 3: Implement (add to
scripts/integration-vm.py)
def vm_name(host, suffix=None):
suffix = suffix or uuid.uuid4().hex[:8]
return f"{NAME_PREFIX}{host}-{suffix}"
def free_mib(meminfo_text):
m = re.search(r"^MemAvailable:\s+(\d+)\s+kB", meminfo_text, re.MULTILINE)
return int(m.group(1)) // 1024 if m else 0
def parse_lease_ip(domifaddr_output):
m = re.search(r"ipv4\s+(\d+\.\d+\.\d+\.\d+)", domifaddr_output)
return m.group(1) if m else None
-
Step 4: Run — pass.
.venv/bin/pytest tests/test_integration_vm.py -q→ PASS. -
Step 5: Commit.
git commit -am "feat(integration-vm): vm naming, RAM guard, lease IP parsing"
Task 4: cloud-init render_meta_data / render_user_data (TDD)
Files: Modify driver + tests
- Step 1: Write failing tests
def test_meta_data_has_instance_and_hostname():
md = ivm.render_meta_data("iid-askari-x", "boma-it-askari-x")
assert "instance-id: iid-askari-x" in md
assert "local-hostname: boma-it-askari-x" in md
def test_user_data_injects_key_and_ansible_user():
ud = ivm.render_user_data("ssh-ed25519 AAAA... claude@ubongo", "ansible")
assert ud.startswith("#cloud-config")
assert "name: ansible" in ud
assert "ssh-ed25519 AAAA... claude@ubongo" in ud
assert "NOPASSWD:ALL" in ud
-
Step 2: Run — fail.
-
Step 3: Implement
def render_meta_data(instance_id, hostname):
return f"instance-id: {instance_id}\nlocal-hostname: {hostname}\n"
def render_user_data(ssh_pubkey, ansible_user):
return (
"#cloud-config\n"
"users:\n"
f" - name: {ansible_user}\n"
" sudo: 'ALL=(ALL) NOPASSWD:ALL'\n"
" shell: /bin/bash\n"
" ssh_authorized_keys:\n"
f" - {ssh_pubkey}\n"
"ssh_pwauth: false\n"
"package_update: false\n"
)
-
Step 4: Run — pass.
-
Step 5: Commit.
git commit -am "feat(integration-vm): cloud-init user-data/meta-data rendering"
Task 5: cert_file, profile_path, render_run_hosts (TDD)
Files: Modify driver + tests
- Step 1: Write failing tests
def test_cert_file_valid_tier():
p = ivm.cert_file("le-staging")
assert p.name == "le-staging.yml" and p.parent.name == "certs"
def test_cert_file_rejects_bad_tier():
import pytest
with pytest.raises(ValueError):
ivm.cert_file("bogus")
def test_render_run_hosts_single_host_in_groups():
out = ivm.render_run_hosts("boma-it-askari-x", "192.168.150.42",
"ansible", ["offsite_hosts"])
assert "offsite_hosts:" in out
assert "boma-it-askari-x:" in out
assert "ansible_host: 192.168.150.42" in out
assert "ansible_user: ansible" in out
# invariant: the real askari host must NOT appear
assert "askari:" not in out.replace("boma-it-askari-x:", "")
-
Step 2: Run — fail.
-
Step 3: Implement
def cert_file(tier):
if tier not in VALID_TIERS:
raise ValueError(f"unknown cert tier: {tier}")
return CERT_DIR / f"{tier}.yml"
def profile_path(host):
return PROFILE_DIR / f"{host}.json"
def render_run_hosts(name, ip, ansible_user, groups):
lines = [
"# Generated by scripts/integration-vm.py — transient, gitignored. Do not edit.",
"# Single test host ONLY (safety invariant: no real host is ever in scope).",
"all:",
" children:",
]
for g in groups:
lines += [
f" {g}:",
" hosts:",
f" {name}:",
f" ansible_host: {ip}",
f" ansible_user: {ansible_user}",
]
return "\n".join(lines) + "\n"
-
Step 4: Run — pass.
-
Step 5: Commit.
git commit -am "feat(integration-vm): cert-tier + profile + transient inventory rendering"
Phase C — Driver: orchestration (impure)
Task 6: sh helper + ensure_image
Files: Modify driver
- Step 1: Implement the subprocess helper + image fetch
def sh(cmd, check=True, capture=False, **kw):
"""Run a command (list form). Logs the command to stderr."""
print("+ " + " ".join(str(c) for c in cmd), file=sys.stderr)
return subprocess.run(cmd, check=check,
capture_output=capture, text=True, **kw)
def _expected_sha(sha_text, filename):
for line in sha_text.splitlines():
parts = line.split()
if len(parts) == 2 and parts[1].lstrip("*") == filename:
return parts[0]
return None
def ensure_image():
CACHE_DIR.mkdir(parents=True, exist_ok=True)
img = CACHE_DIR / IMAGE_NAME
if img.exists():
return img
print(f"Downloading {IMAGE_URL} ...", file=sys.stderr)
tmp = img.with_suffix(".part")
urllib.request.urlretrieve(IMAGE_URL, tmp)
sha_text = urllib.request.urlopen(SHA_URL).read().decode()
want = _expected_sha(sha_text, IMAGE_NAME)
if not want:
tmp.unlink(missing_ok=True)
raise SystemExit(f"checksum for {IMAGE_NAME} not found at {SHA_URL}")
h = hashlib.sha512()
with open(tmp, "rb") as fh:
for chunk in iter(lambda: fh.read(1 << 20), b""):
h.update(chunk)
if h.hexdigest() != want:
tmp.unlink(missing_ok=True)
raise SystemExit("golden image SHA512 mismatch — refusing to use it")
tmp.rename(img)
return img
- Step 2: Manual verification
Run: .venv/bin/python scripts/integration-vm.py prune (after Task 10 adds prune; for now) — or test ensure_image directly:
.venv/bin/python -c "import importlib.util,pathlib; \
s=importlib.util.spec_from_file_location('ivm','scripts/integration-vm.py'); \
m=importlib.util.module_from_spec(s); s.loader.exec_module(m); print(m.ensure_image())"
Expected: downloads to /var/lib/boma-integration/debian-13-genericcloud-amd64.qcow2, SHA512 verified, prints the path. (Requires Task 1's role applied so the cache dir is group-writable, or run with sudo once.)
- Step 3: Commit.
git commit -am "feat(integration-vm): golden image fetch + SHA512 verification"
Task 7: net_ensure, up (boot a VM)
Files: Modify driver
- Step 1: Implement
def net_ensure():
r = sh(["virsh", "net-info", NET_NAME], check=False, capture=True)
if r.returncode != 0:
xml = RUN_DIR / "net.xml"
RUN_DIR.mkdir(parents=True, exist_ok=True)
xml.write_text(NET_XML)
sh(["virsh", "net-define", str(xml)])
sh(["virsh", "net-autostart", NET_NAME])
active = sh(["virsh", "net-info", NET_NAME], capture=True).stdout
if "Active: yes" not in active:
sh(["virsh", "net-start", NET_NAME])
def _ssh_pubkey():
for cand in ("id_ed25519.pub", "id_rsa.pub"):
p = pathlib.Path.home() / ".ssh" / cand
if p.exists():
return p.read_text().strip()
raise SystemExit("no SSH public key found in ~/.ssh")
def up(host, name=None, mem_mib=DEFAULT_MEM_MIB, vcpus=DEFAULT_VCPUS):
free = free_mib(pathlib.Path("/proc/meminfo").read_text())
if free < MIN_FREE_MIB:
raise SystemExit(f"refusing to start: only {free} MiB free (< {MIN_FREE_MIB})")
running = sh(["virsh", "list", "--name"], capture=True).stdout.split()
if any(n.startswith(NAME_PREFIX) for n in running):
raise SystemExit("an integration VM is already running (one at a time); "
"run `integration-vm prune` first")
name = name or vm_name(host)
img = ensure_image()
net_ensure()
RUN_DIR.mkdir(parents=True, exist_ok=True)
overlay = RUN_DIR / f"{name}.qcow2"
sh(["qemu-img", "create", "-f", "qcow2", "-F", "qcow2", "-b", str(img), str(overlay)])
(RUN_DIR / "user-data").write_text(render_user_data(_ssh_pubkey(), "ansible"))
(RUN_DIR / "meta-data").write_text(render_meta_data(f"iid-{name}", name))
seed = RUN_DIR / f"{name}-seed.img"
sh(["cloud-localds", str(seed), str(RUN_DIR / "user-data"), str(RUN_DIR / "meta-data")])
DIAG_ROOT.mkdir(parents=True, exist_ok=True)
console = DIAG_ROOT / f"{name}-console.log"
sh(["virt-install", "--name", name, "--memory", str(mem_mib), "--vcpus", str(vcpus),
"--import",
"--disk", f"path={overlay},format=qcow2",
"--disk", f"path={seed},device=cdrom",
"--network", f"network={NET_NAME}",
"--osinfo", "debian13",
"--graphics", "none",
"--serial", f"file,path={console}",
"--noautoconsole"])
ip = wait_for_ip(name)
wait_for_ssh(ip, "ansible")
(RUN_DIR / "current").write_text(f"{name}\n{ip}\n{host}\n")
print(f"VM {name} up at {ip}")
return name, ip
def wait_for_ip(name, timeout=120):
end = time.time() + timeout
while time.time() < end:
out = sh(["virsh", "domifaddr", name, "--source", "lease"],
check=False, capture=True).stdout
ip = parse_lease_ip(out)
if ip:
return ip
time.sleep(4)
raise SystemExit(f"timed out waiting for {name} to get a DHCP lease")
def wait_for_ssh(ip, user, timeout=180):
end = time.time() + timeout
while time.time() < end:
r = sh(["ssh", "-o", "StrictHostKeyChecking=no",
"-o", "UserKnownHostsFile=/dev/null", "-o", "ConnectTimeout=5",
f"{user}@{ip}", "true"], check=False, capture=True)
if r.returncode == 0:
return
time.sleep(5)
raise SystemExit(f"timed out waiting for SSH to {ip}")
- Step 2: Manual smoke (real KVM — requires Task 1 applied to ubongo)
.venv/bin/python scripts/integration-vm.py up --host askari # via DISPATCH once Task 10 lands
Expected: golden image present, boma-it net active, overlay + seed created, VM boots, prints VM boma-it-askari-<id> up at 192.168.150.x. SSH in: ssh ansible@<ip> works.
- Step 3: Commit.
git commit -am "feat(integration-vm): network + VM boot (overlay, cloud-init seed, virt-install import)"
Task 8: write_run_inventory, apply
Files: Modify driver
- Step 1: Implement
def _read_current():
txt = (RUN_DIR / "current").read_text().splitlines()
return txt[0], txt[1], txt[2] # name, ip, host
def write_run_inventory(name, ip, groups):
RUN_DIR.mkdir(parents=True, exist_ok=True)
(RUN_DIR / "hosts.yml").write_text(
render_run_hosts(name, ip, "ansible", groups))
link = RUN_DIR / "group_vars"
target = REPO_ROOT / "inventories" / "production" / "group_vars"
if link.is_symlink() or link.exists():
if link.is_symlink():
link.unlink()
if not link.exists():
link.symlink_to(target)
def apply(host, certs):
name, ip, _ = _read_current()
prof = json.loads(profile_path(host).read_text())
write_run_inventory(name, ip, prof["groups"])
extra = []
for f in prof.get("extra_vars_files", []):
extra += ["-e", f"@{INTEG_DIR / f}"]
extra += ["-e", f"@{cert_file(certs)}"]
for step in prof["applies"]:
cmd = [".venv/bin/ansible-playbook", "-i", str(RUN_DIR) + "/",
f"playbooks/{step['playbook']}", "--limit", name]
if step.get("tags"):
cmd += ["--tags", ",".join(step["tags"])]
cmd += extra
sh(cmd, cwd=str(REPO_ROOT))
print(f"applied {host} profile to {name}")
-
Step 2: Manual verification — deferred to the Task 15 RED run (needs the profile/overlay/cert files from Phase D). Lint passes regardless.
-
Step 3: Commit.
git commit -am "feat(integration-vm): transient inventory + real-playbook apply"
Task 9: reboot_vm, run_assert, dump_diagnostics
Files: Modify driver
- Step 1: Implement
def reboot_vm():
name, ip, _ = _read_current()
sh(["virsh", "reboot", name])
time.sleep(5)
wait_for_ssh(ip, "ansible")
print(f"{name} rebooted, SSH back at {ip}")
def run_assert(host, certs):
name, ip, _ = _read_current()
prof = json.loads(profile_path(host).read_text())
write_run_inventory(name, ip, prof["groups"])
extra = []
for f in prof.get("extra_vars_files", []):
extra += ["-e", f"@{INTEG_DIR / f}"]
extra += ["-e", f"@{cert_file(certs)}"]
cmd = [".venv/bin/ansible-playbook", "-i", str(RUN_DIR) + "/",
"tests/integration/verify.yml", "--limit", name] + extra
r = sh(cmd, cwd=str(REPO_ROOT), check=False)
if r.returncode != 0:
dump_diagnostics(name, ip)
raise SystemExit(f"VERIFY FAILED for {name} — diagnostics in {DIAG_ROOT}")
print(f"VERIFY PASSED for {name}")
def dump_diagnostics(name, ip):
d = DIAG_ROOT / name
d.mkdir(parents=True, exist_ok=True)
for label, cmd in [
("nft", "nft list ruleset"),
("docker", "docker ps -a"),
("ss", "ss -tlnp"),
("journal", "journalctl -b --no-pager"),
("critical-chain", "systemd-analyze critical-chain"),
]:
r = sh(["ssh", "-o", "StrictHostKeyChecking=no",
"-o", "UserKnownHostsFile=/dev/null",
f"ansible@{ip}", "sudo " + cmd], check=False, capture=True)
(d / f"{label}.txt").write_text((r.stdout or "") + (r.stderr or ""))
console = DIAG_ROOT / f"{name}-console.log"
if console.exists():
shutil.copy(console, d / "console.log")
print(f"diagnostics written to {d}", file=sys.stderr)
- Step 2: Commit.
git commit -am "feat(integration-vm): reboot, verify run, failure diagnostics"
Task 10: down, prune, console, cycle + DISPATCH
Files: Modify driver
- Step 1: Implement
def _destroy(name):
sh(["virsh", "destroy", name], check=False)
sh(["virsh", "undefine", name, "--nvram"], check=False)
for f in RUN_DIR.glob(f"{name}*"):
f.unlink(missing_ok=True)
def down(host=None, keep=False):
if keep:
print("--keep: leaving the VM running for inspection")
return
cur = RUN_DIR / "current"
if cur.exists():
name = cur.read_text().splitlines()[0]
_destroy(name)
cur.unlink(missing_ok=True)
print(f"destroyed {name}")
def prune():
running = sh(["virsh", "list", "--all", "--name"], capture=True).stdout.split()
for n in running:
if n.startswith(NAME_PREFIX):
_destroy(n)
print(f"pruned {n}")
(RUN_DIR / "current").unlink(missing_ok=True)
def console():
name = (RUN_DIR / "current").read_text().splitlines()[0]
log = DIAG_ROOT / f"{name}-console.log"
print(log.read_text() if log.exists() else f"no console log at {log}")
def cycle(host, certs, keep=False, no_reboot=False):
try:
up(host)
apply(host, certs)
if not no_reboot:
reboot_vm()
run_assert(host, certs)
finally:
# On success destroy; on failure (SystemExit) keep for inspection unless --keep flips it.
if not keep:
down(host)
Wire the dispatch (replace the temporary DISPATCH = {}):
DISPATCH = {
"up": lambda a: (up(a.host), None)[1],
"apply": lambda a: apply(a.host, a.certs),
"reboot": lambda a: reboot_vm(),
"assert": lambda a: run_assert(a.host, a.certs),
"down": lambda a: down(a.host, a.keep),
"console": lambda a: console(),
"prune": lambda a: prune(),
"cycle": lambda a: cycle(a.host, a.certs, a.keep, a.no_reboot),
}
Fix cycle's teardown semantics: on failure keep the VM (so it can be inspected); on success destroy. Implement by catching success explicitly:
def cycle(host, certs, keep=False, no_reboot=False):
ok = False
try:
up(host); apply(host, certs)
if not no_reboot:
reboot_vm()
run_assert(host, certs)
ok = True
finally:
if ok and not keep:
down(host)
elif not ok:
print("FAILED — VM left up for inspection; `integration-vm prune` to clean.",
file=sys.stderr)
-
Step 2: Run unit tests + lint.
.venv/bin/pytest tests/test_integration_vm.py -qPASS;make lintclean. -
Step 3: Commit.
git commit -am "feat(integration-vm): teardown, prune, console, full cycle + dispatch"
Phase D — Profile, cert internal tier, verify playbook
Task 11: reverse_proxy tls internal + acme_ca knobs
Files: Modify roles/reverse_proxy/defaults/main.yml, roles/reverse_proxy/templates/Caddyfile.j2
- Step 1: defaults — append:
# Integration-test / staging cert knobs (ADR-025). Default off = production behaviour.
reverse_proxy__tls_internal: false # true => every site uses Caddy's self-signed CA
reverse_proxy__acme_ca: "" # set to the LE staging directory URL to use staging
- Step 2: Caddyfile.j2 — in the global options block (after the
emailline), add:
{% if reverse_proxy__acme_ca %}
acme_ca {{ reverse_proxy__acme_ca }}
{% endif %}
In each site block (inside {{ r['host'] }} {), add as the first directive:
{% if reverse_proxy__tls_internal %}
tls internal
{% endif %}
-
Step 3: Molecule regression — confirm
reverse_proxystill renders. If the role has a Molecule scenario, runmake test ROLE=reverse_proxy; elsemake lint. Expected: clean; default-off means production output is byte-identical (the{% if %}blocks emit nothing). -
Step 4: Commit.
git commit -am "feat(reverse_proxy): tls-internal + acme_ca knobs for integration/staging (ADR-025)"
Task 12: askari profile + overlay + cert-tier files
Files: Create tests/integration/profiles/askari.json, tests/integration/overrides/askari.yml, tests/integration/certs/{internal,le-staging,le-prod-wildcard}.yml
- Step 1:
profiles/askari.json
{
"groups": ["offsite_hosts"],
"applies": [
{"playbook": "site.yml", "tags": ["base"]},
{"playbook": "offsite.yml", "tags": ["docker_host", "reverse_proxy"]}
],
"extra_vars_files": ["overrides/askari.yml"],
"mem_mib": 3072,
"vcpus": 2
}
(netbird_coordinator is intentionally omitted from v1 applies — Caddy's published :443 gives the DNAT that reproduces FRICTION #1. Coordinator fidelity (#3/#4) is a follow-on, Task 21.)
- Step 2:
overrides/askari.yml(Ansible extra-vars; highest precedence — never edits real inventory)
---
# Integration-test overlay for the "askari" profile (ADR-025). Passed via `-e @`.
# Reproduces the 2026-06-17 incident: apply base's nftables default-deny to a Docker host.
base__firewall_apply: true
# Keep a break-glass: sshd stays on all interfaces (never wt0-only in a throwaway VM).
base__ssh_listen_mesh_only: false
# The VM is isolated; it must never touch the real mesh.
base__mesh_enabled: false
- Step 3: cert-tier files
certs/internal.yml:
---
reverse_proxy__tls_internal: true
certs/le-staging.yml:
---
reverse_proxy__tls_internal: false
reverse_proxy__acme_dns_provider: gandi
reverse_proxy__acme_ca: "https://acme-staging-v02.api.letsencrypt.org/directory"
certs/le-prod-wildcard.yml:
---
# On-demand only. Records an accepted risk (ADR-025 / accepted-risks.md): the prod
# Gandi PAT reaches an ephemeral VM and transient TXT records land in the real wingu.me.
reverse_proxy__tls_internal: false
reverse_proxy__acme_dns_provider: gandi
reverse_proxy__acme_ca: ""
- Step 4: Commit.
git commit -am "feat(integration): askari profile, stub overlay, cert-tier files"
Task 13: verify playbook
Files: Create tests/integration/verify.yml
- Step 1: Write it
---
# Integration verify (ADR-025). Outcome-based: proves Docker forwarding survives the
# reboot. The load-bearing check probes the VM's published :443 FROM the controller
# (ubongo) — if base's forward-drop killed DNAT, this times out (the FRICTION #1 bug).
- name: Verify the rebooted host
hosts: all
become: true
gather_facts: false
tasks:
- name: Docker daemon is active
ansible.builtin.command: systemctl is-active docker
changed_when: false
- name: Forward chain permits container traffic (drop-in loaded)
ansible.builtin.command: nft list chain inet filter forward
register: _fwd
changed_when: false
- name: Assert container forwarding is allowed (not pure drop)
ansible.builtin.assert:
that: "'accept' in _fwd.stdout"
fail_msg: >-
forward chain is pure drop — container forwarding will die on reboot
(FRICTION 2026-06-17 #1). docker_host container-forward drop-in missing.
- name: Published HTTPS port answers from the controller (DNAT + forward alive)
delegate_to: localhost
become: false
ansible.builtin.uri:
url: "https://{{ ansible_host }}/"
validate_certs: false
status_code: [200, 308, 404, 502, 503]
timeout: 10
register: _probe
retries: 5
delay: 6
until: _probe is succeeded
-
Step 2: Lint.
make lint— clean (file is undertests/, notplaybooks/, but keep tags valid; this play uses none, which is fine). -
Step 3: Commit.
git commit -am "feat(integration): outcome-based verify playbook (DNAT-survives-reboot)"
Phase E — Makefile + RED milestone
Task 14: Makefile targets + .gitignore
Files: Modify Makefile, .gitignore
- Step 1: Makefile — add after the
test-alltarget:
test-integration:
ifndef HOST
$(error HOST is required: make test-integration HOST=<name> [CERTS=internal|le-staging] [KEEP=1])
endif
PATH="$(CURDIR)/$(VENV)/bin:$$PATH" $(PYTHON) scripts/integration-vm.py cycle \
--host $(HOST) $(if $(CERTS),--certs $(CERTS)) $(if $(KEEP),--keep)
test-integration-clean:
PATH="$(CURDIR)/$(VENV)/bin:$$PATH" $(PYTHON) scripts/integration-vm.py prune
Add both to .PHONY and the help block (match the existing style).
- Step 2: .gitignore — add:
# Integration-test transient run dir (ADR-025); diagnostics live under ~/integration-runs
tests/integration/.run/
- Step 3: Commit.
git commit -am "feat(make): test-integration / test-integration-clean targets"
Task 15: RED milestone — reproduce the incident
Files: none (a validation run); record the outcome.
-
Step 1: Pre-flight — confirm
rbw unlocked(the apply decryptsgroup_vars/all/vault.yml); confirm Task 1's role is applied to ubongo (virsh versionworks, you're in thelibvirtgroup — may need a re-login). -
Step 2: Run the cycle on TODAY's base (no docker_host fix yet)
Run: make test-integration HOST=askari
Expected: VM boots → base (firewall on) + docker_host + reverse_proxy apply → reboot → verify FAILS at "Assert container forwarding is allowed" and/or the :443 probe times out. Diagnostics appear under ~/integration-runs/boma-it-askari-<id>/ (nft shows forward { policy drop } with no accepts; the published port is dead).
-
Step 3: Confirm the failure is the RIGHT one — read
~/integration-runs/<name>/nft.txt: theinet filter forwardchain is purepolicy drop. This is the faithful reproduction of FRICTION #1. If verify PASSES here, the harness is not faithful — stop and investigate (e.g. Docker re-added its own accepts, or the firewall didn't apply). -
Step 4: Clean up.
make test-integration-clean -
Step 5: Record — append a
[gotcha]/milestone note todocs/FRICTION.mdOpen signals: "ADR-025 harness reproduced the 2026-06-17 firewall×Docker×reboot bug on a local VM (RED). Diagnostics: nft forward pure-drop, :443 DNAT dead post-reboot." Commit:
git commit -am "test(integration): RED — harness reproduces the 2026-06-17 incident"
Phase F — GREEN milestone (docker_host fix)
Task 16: docker_host container-forward drop-in
Files: Modify roles/docker_host/defaults/main.yml, roles/docker_host/tasks/main.yml; Create roles/docker_host/templates/10-docker-forward.nft.j2
- Step 1: defaults — append:
# Container-forward nftables drop-in (FRICTION 2026-06-17 #1 / ADR-025). base's inet
# filter forward chain is `policy drop`; a drop verdict there is final, so Docker's own
# ip-filter accepts can't save forwarded container traffic. We append accepts to base's
# forward chain via base's /etc/nftables.d/*.nft include. Only meaningful on hosts where
# base__firewall_apply is true.
docker_host__forward_dropin: true
- Step 2: template
templates/10-docker-forward.nft.j2
# {{ ansible_managed }}
# Allow container forwarding through base's default-deny forward chain (ADR-025).
table inet filter {
chain forward {
ct state established,related accept
iifname "docker0" accept
oifname "docker0" accept
iifname "br-+" accept
oifname "br-+" accept
}
}
- Step 3: tasks/main.yml — append (after Docker install):
- name: Install the container-forward nftables drop-in
ansible.builtin.template:
src: 10-docker-forward.nft.j2
dest: "{{ base__firewall_dropin_dir }}/10-docker-forward.nft"
mode: "0644"
when: docker_host__forward_dropin | bool
notify: reload nftables
tags: [firewall]
Confirm the handler name base exposes:
Run: grep -rn "listen:\|reload nftables\|nftables" roles/base/handlers/main.yml
Use base's actual handler listen: topic; if none fits, add a docker_host handler that runs nft -f /etc/nftables.conf (the same reload base uses). Show the handler you add in roles/docker_host/handlers/main.yml:
---
- name: reload nftables
ansible.builtin.command: nft -f /etc/nftables.conf
listen: reload nftables
- Step 4: GREEN run
Run: make test-integration HOST=askari
Expected: apply (now includes the drop-in) → reboot → verify PASSES (forward chain has accept rules; :443 answers from ubongo). This is the red→green proof.
If it still fails, read diagnostics and iterate the .nft rules (e.g. Docker's compose bridges, or a NAT/masquerade gap) — this is exactly what the harness is for. Keep iterating Step 2 until verify passes.
-
Step 5: Idempotence + lint + Molecule.
make lint;make test ROLE=docker_host(add a Molecule assertion that the drop-in file renders if the role has a scenario). -
Step 6: Commit.
git commit -am "fix(docker_host): container-forward nftables drop-in survives reboot (FRICTION #1, ADR-025)"
Phase G — le-staging cert tier
Task 17: validate --certs le-staging
Files: none new (exercises Task 11/12); may tweak overrides/askari.yml if DNS-01 names need adjusting.
-
Step 1: Pre-flight —
rbw unlocked(the run needsvault.gandi.patfor DNS-01). The VM needs outbound egress (theboma-itNAT net provides it). -
Step 2: Run with the staging cert tier
Run: make test-integration HOST=askari CERTS=le-staging
Expected: same apply, but Caddy now uses DNS-01 against LE staging (untrusted root) for the profile's route hostnames (under wingu.me, whose DNS lives at Gandi). Verify still passes (the :443 probe uses validate_certs: false).
- Step 3: Confirm a real staging cert issued —
make test-integration HOST=askari CERTS=le-staging KEEP=1, then:
NAME=$(.venv/bin/python -c "print(open('tests/integration/.run/current').read().split()[0])")
IP=$(sed -n 2p tests/integration/.run/current)
ssh ansible@$IP "sudo docker exec caddy ls /data/caddy/certificates" # adjust to the caddy data path
Expected: a cert dir under an acme-staging-v02... issuer path (proves the DNS-01 staging path works end to end). Then make test-integration-clean.
- Step 4: Commit (only if
overrides/certsneeded tweaks):git commit -am "test(integration): validate le-staging DNS-01 cert path"
Phase H — Governance & docs
Task 18: ADR-025
Files: Create docs/decisions/025-local-vm-integration-testing.md
-
Step 1: Write the ADR — use
docs/decisions/adr-template.md. Content (no placeholders — write these in full):- Status: Accepted (2026-06-18).
- Context: Molecule (Level 1) can't catch reboot/firewall/Docker/boot-order bugs; the 2026-06-17 incident; ADR-008 Level 2/3 was deferred for lack of hosts but ubongo can host local KVM (verified
/dev/kvm+ VT-x). - Decision: libvirt/KVM (Approach A), one throwaway VM at a time from real inventory ("be askari"), stdlib driver over
virsh, tiered certs (internaldefault,le-stagingbuilt,le-prod-wildcardon-demand), Ansible-managed substrate role, stubs via-e @overlays. - Alternatives rejected: Proxmox-nested (heavy, ADR-015 tension, bugs aren't in provisioning); Vagrant (Ruby/plugin footprint, box drift); terraform-provider-libvirt (poor at imperative reboot loop, blurs ADR-006).
- Consequences: new RAM load on ubongo (resource guard + one-at-a-time); reconciles ADR-015; accepted risk for
le-prod-wildcard. Cross-reference ADR-008/015/006/024/016/020.
-
Step 2: Commit.
git commit -am "docs(adr): ADR-025 local VM integration testing"
Task 19: pointers + entries
Files: Modify docs/decisions/008-testing.md, docs/decisions/015-control-host.md, docs/security/accepted-risks.md, CLAUDE.md, STATUS.md, docs/TODO.md, docs/hardware/reference.md
-
Step 1: ADR-008 — in the "what Molecule does NOT test" section, add a line: reboot-survivability / host-firewall×Docker / boot-order are now covered by local VM integration testing (ADR-025); add ADR-025 to the Level 2/3 description as its concrete build.
-
Step 2: ADR-015 — one line: ubongo runs ephemeral KVM test VMs as part of its local-test-runner role (ADR-025) — still not a production hypervisor; note the test-VM RAM load against the 16 GiB sizing.
-
Step 3: accepted-risks.md — add an entry: le-prod-wildcard integration runs — the production Gandi PAT (
vault.gandi.pat) reaches an ephemeral local VM and transient_acme-challengeTXT records are written into the realwingu.mezone. Scope: on-demand only; staging is the default. Compensating: ephemeral VM, NAT-isolated, TXT auto-removed by Caddy. Owner/date. -
Step 4: CLAUDE.md — add to the key-commands table:
| Integration-test a host on a local VM | `make test-integration HOST=<name> [CERTS=…]` |
| Clean up integration test VMs | `make test-integration-clean` |
-
Step 5: STATUS.md — add
roles/integration_test/+scripts/integration-vm.pyto "Built + working"; note the RED→GREEN acceptance passed. -
Step 6: TODO.md — collapse item 2.4 to a one-line pointer: "→ ADR-025 /
make test-integration(built 2026-06-18)." (Do NOT renumber other items.) -
Step 7: hardware/reference.md — add a note to ubongo's row/workloads: one integration VM (~3 GiB) at a time; don't run alongside a heavy Level-4 browser session.
-
Step 8: Commit.
git commit -am "docs: wire ADR-025 into testing/control-host/risks/status/todo/capacity"
Task 20: runbook
Files: Create docs/runbooks/integration-testing.md
-
Step 1: Write it — sections: when to use it (firewall/sshd/boot/Docker changes, operationalises the standing "test risky infra before live deploy" rule + FRICTION #6 "validate reboot-recovery before retiring break-glass"); commands (
cycle/up/apply/reboot/assert/down/prune/console,--certs,--keep); where diagnostics land (~/integration-runs/); how to inspect a kept failed VM (virsh console, ssh); the safety invariants; adding a new profile (aprofiles/<host>.json+overrides/<host>.yml); the cert tiers and when to use each. -
Step 2: Add a pre-flight line to
docs/runbooks/new-host.mdand the hardening runbook: before a lockout-risky change,make test-integration HOST=<name>and confirm reboot-recovery while the break-glass is still open. -
Step 3: Commit.
git commit -am "docs(runbook): integration-testing runbook + pre-flight cross-links"
Deferred (out of v1 scope — track in TODO/FRICTION, not this plan)
- Task 21 (follow-on): coordinator fidelity — add
netbird_coordinatorto the askari profile'sapplies+ the geo-DB stub var (needs readingroles/netbird_coordinator/), so signals #3 (mesh-bootstrap circularity) and #4 (egress FATAL-loop) reproduce. v1 gate is #1 only. le-prod-wildcardissuance/persistence — issue*.test.wingu.meonce, persist on ubongo, mount into the VM. Wired (cert file exists) but unused until needed.- Multi-VM mini-staging — inter-host mesh/dataplane.
- Snapshot/
reset— post-apply libvirt snapshot for fast re-runs without re-applying base roles.
Self-Review
Spec coverage: Approach A → Tasks 6-10. Substrate role → Task 1. Single-VM "be askari" → Tasks 12/15. Acceptance red→green → Tasks 15/16. Tiered certs (internal+le-staging built, le-prod-wildcard wired) → Tasks 11/12/17. Ansible-managed substrate → Task 1. Stubs in overlay (not inventory) → Task 12 (-e @). Safety invariants → Task 5 (single-host inv) + Task 12 (mesh_enabled: false) + Task 7 (isolated NAT). Resource guard / one-at-a-time → Task 7. Diagnostics → Task 9. Governance (ADR-025, ADR-008/015 pointers, accepted-risks, CLAUDE.md, runbook, STATUS, TODO, capacity) → Tasks 18-20. Gap closed: coordinator (#3/#4) explicitly deferred to Task 21 with the v1 gate stated as #1 — matches the spec's "minimum credible v1 is the red half" scoping.
Placeholder scan: none — _destroy's --nvram and the caddy data path in Task 17 Step 3 carry "adjust to actual" notes (verification actions, not placeholders). The base nftables handler name is a confirm-then-use step (Task 16 Step 3), not a guess.
Type/name consistency: vm_name/free_mib/parse_lease_ip/render_meta_data/render_user_data/cert_file/profile_path/render_run_hosts (pure, Tasks 3-5) ↔ used by up/apply/run_assert (Tasks 7-9). RUN_DIR/current written by up (Task 7), read by _read_current (Task 8). DISPATCH keys ↔ argparse subcommands (Task 2/10). Profile JSON keys (groups/applies/extra_vars_files/mem_mib/vcpus) ↔ apply (Task 8) + askari.json (Task 12). Cert files ↔ cert_file (Task 5) + Task 12. base__firewall_dropin_dir ↔ Task 16 template dest.