Files
home-network-k3s-impl/infra/devcontainer/README.md
jakman85andClaude Opus 5 f7d3884ad2 fix(ci): scope the requirement matcher to the diff and to non-doc files
`ci/touched-requirements.sh` documents its detection as "R-* tokens literally
present in the diff of changed files". It did not do that — it grepped the ENTIRE
CONTENT of every changed file. So a change inherited every requirement those files
had ever mentioned in prose, and `--require-all` then blocked the merge on
requirements the author never went near.

On this branch that meant editing the decision log and the tofu docs dragged in
five unrelated requirements, all on untouched lines, all legitimately uncovered:

  [coverage] REQUIRE: FAILED — required requirement(s) uncovered: [5 IDs]

The practical effect was that the PM could not append to the decision log without
failing CI — which is a fair part of why the log went stale in the first place.
This is the defect already logged as "FOLLOW-UP (WS-TEST): fix the matcher so real
requirements need not be exempted".

Two scoping rules, both learned from the gate blocking merges it should not have:

  1. Scan the ADDED/REMOVED lines of the diff, as the header always claimed.
     Removed lines count too — deleting a test's requirement tag, or a policy's
     self-declared ID, touches that requirement just as much as adding one.

  2. Skip `*.md`. An ID in prose is a REFERENCE, not a declaration: explaining a
     requirement is not changing behaviour against it. Rule 1 alone is not enough —
     a commit that documents a mis-attribution names the IDs involved and thereby
     re-triggers the very mis-attribution it fixes, and the decision log can never
     record which requirements a change concerned.

This TIGHTENS attribution rather than weakening the gate:
  - no requirement is exempted, and DOCUMENTED_GAPS is untouched;
  - authoritative declarations (`conformance.home.k3s/R-*` tags, Kyverno policies,
    ServiceDefinitions) all live in YAML, on lines a real change must touch;
  - the coarse path->requirement fallback is unchanged and file-type agnostic, so
    the doc subtrees that matter (conformance/, schemas/, catalog/, clusters/, ci/)
    stay covered either way.

Alternatives rejected: adding the five IDs to DOCUMENTED_GAPS genuinely weakens the
gate; scrubbing requirement IDs out of prose (precedent f9e9640) would mean editing
the decision log's own history to appease a matcher.

Gate semantics change — flagged in DECISIONS-LOG.md for review.

Also drops three R-TEST-06 mentions this branch had added to prose and refreshes
the now-stale "gate is RED" notes.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
2026-08-27 00:06:28 -05:00

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4.3 KiB
Markdown

# Dev toolbox (containerized baseline)
The toolchain for this repo is **not all Python** (OpenTofu, `age`, `sops`, `flux`, `chainsaw`,
`kyverno` are Go binaries; only Ansible and a couple of linters are Python). Per the operator's
rule it is therefore delivered as a **pinned dev container** — no host pollution, one reproducible
baseline, and the *same* binaries CI uses.
**This is the supported way to run anything in this repo.** Don't install the toolchain on the host.
## What's inside (pinned in `versions.env`)
| Group | Tools |
|---|---|
| Provisioning | OpenTofu (`bpg/proxmox` provider), `ansible-core`, `openssh-clients` |
| GitOps / cluster | `flux`, `kubectl`, `helm` |
| Secrets | `sops`, `age` + `age-keygen` |
| **CI gate** | `yamllint`, `check-jsonschema`, `kyverno` CLI, `kyverno-json`, `chainsaw`, `yq`, `diffutils`, `make` |
| Misc | `qemu-img`, `cloud-utils`/`genisoimage`, `libvirt-client` (disk-image utilities only — leftovers from the libvirt era, harmless) |
The conformance-tool versions are kept in lockstep with `ci/versions.env` so
`make -C ci gate` in here is byte-identical to the CI runner (**R-TEST-02**). The image records
the resolved set at `/etc/dev-toolchain-versions`.
## Use
```bash
cd infra/devcontainer
./dev.sh build # build the image (needs network)
./dev.sh # build if needed + shell in /work (the repo)
./dev.sh run make -C ci gate # the merge gate, exactly as CI runs it
./dev.sh run sops -d path/to.sops.yaml
./dev.sh run tofu -chdir=/work/infra/tofu plan
```
`ENGINE=docker ./dev.sh` to use docker instead of rootless podman.
## What `dev.sh` mounts, and why each one matters
- `--network host` — Ansible SSHes to the nodes through the pfSense NAT (`192.168.2.102:225x`) and
`kubectl`/`flux`/`tofu` reach the kube-API (`192.168.2.50:6443`) and the Proxmox API
(`192.168.2.102:8006`) on the host's network.
- `-v $REPO:/work` (workdir) — the repo.
- `-v ~/.config/sops:/root/.config/sops` — **the age keyring, read-write**. This is deliberate: the
private key generated by `bootstrap/sops/age-keygen.sh` must land on the *host*, or it dies with
the `--rm` container and every SOPS-encrypted secret in the repo becomes undecryptable.
- `-v ~/.ssh:/root/.ssh:ro` — node SSH key (`home_network`).
- `-v ~/.config/home-k3s/ansible-vault-pass:...:ro` — the Ansible vault passphrase, so vaulted
`group_vars` decrypt unattended.
- `-v ../home-network-k3s:/home-network-k3s:ro` + `SPEC_REPO` — the **spec repo**, read-only, when
it exists beside this one. Without it `ci/spec-immutability.sh` honestly *skips*
rather than passing — mount it, or that gate silently verifies nothing.
- `--security-opt label=disable` — SELinux hosts, so the bind mounts work without relabeling.
## tofu and ansible now run **inside** the container
This reverses the old Phase-1 limitation. When the dev cluster was on host libvirt, OpenTofu's
`dmacvicar/libvirt` provider could not do a read-write `qemu:///system` connect from inside a
container (polkit/PID-identity: `Cannot find start time for pid`), so tofu had to be extracted and
run on the host. The cluster moved to **Proxmox VE** and the provider is now `bpg/proxmox`, which
talks to the Proxmox **HTTP API** — nothing host-local is required. Ansible likewise only needs
SSH, which `--network host` provides.
So: run everything in here. The host needs only podman (or docker).
## kubectl inside the container — known gap
`dev.sh` sets `KUBECONFIG` to `/work/infra/ansible/.cache/dev.kubeconfig`, a **libvirt-era path
that no longer exists**, and does not mount `~/.kube`. Override it explicitly:
```bash
DEV_KUBECONFIG=/work/path/to/break-glass.kubeconfig ./dev.sh run kubectl get nodes
```
Use a **break-glass cert kubeconfig**, not the `k3s-oidc` context — OIDC login needs a browser,
which a container shell does not have. See [`../PHASE1-STATUS.md`](../PHASE1-STATUS.md) for both
access paths. (Not yet fixed in `dev.sh`.)
## Notes
- Versions are **best-effort pins**; if a download 404s at build, bump the value in `versions.env`
and rebuild. Keep the conformance-tool block aligned with `ci/versions.env`.
- **Secrets never enter the image** — they arrive only as the bind mounts listed above.
- This container is the toolchain, not the cluster. The cluster runs on Proxmox VE; see
[`../PHASE1-STATUS.md`](../PHASE1-STATUS.md).