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home-network-k3s-impl/infra/gitea/README.md
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jakman85andClaude Opus 5 fe862ab527
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infra(gitea): recover the Actions runner before anything requires the gate
No runner is registered at repo, org or site level, so gate.yml has never executed.
PR #1 sat pending for 30.6 minutes across 122 polls and never reported. Requiring the
gate as a status check in that state would lock the repo permanently.

Adds runner-token-rotate.sh: mints a fresh instance-level registration token from the
Gitea API and writes it into the SOPS secret via sops set, without ever printing the
value.

Records the likely root cause, which a new token alone does NOT fix. act_runner
registers once and persists its identity in /data/.runner on the act-runner-data PVC.
If Gitea no longer holds a matching runner row, the pod starts, sees .runner, SKIPS
registration entirely, and polls with an identity Gitea does not recognise. Symptom:
zero runners, pod running, nothing obviously broken. Clearing the PVC is what forces a
genuine re-registration.

The README now sequences runner-first, enforcement-second, and requires CONFIRMING the
runner reports online rather than assuming it. That assumption is the whole defect:
DECISIONS-LOG recorded the runner as online on 2026-08-31 and nobody checked since.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
2026-09-29 00:43:47 -05:00

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# infra/gitea — platform settings that are NOT GitOps-managed
Gitea's own repo settings (branch protection, required status checks, approvals) live
in Gitea's database, not in a manifest Flux reconciles. They are therefore **drift-prone
and invisible to the gate** — exactly how the state below went unnoticed.
## The gap this closes
Verified against the live API on 2026-09-29, against a `DECISIONS-LOG.md` entry
(2026-08-31) asserting the opposite:
| Claimed | Measured |
|---|---|
| `main` is a protected branch, gate is a required status check | `branch_protections` → `[]`; `protected:false`, `enable_status_check:false`, `required_approvals:0`, `user_can_push:true` |
| Runner `incluster-dind` online | **zero** runners registered at repo, org and site level |
So `main` accepted direct pushes, and the gate could not run at all. `CLAUDE.md` is the
rule; this directory is how the rule gets enforced by the machine.
## `branch-protection.sh`
Blocks direct pushes to `main`. Run it, then run the push probe it prints — **verify,
do not trust the API response**, since Gitea may let site admins bypass protection.
./infra/gitea/branch-protection.sh
It authenticates with the credential `git` already has stored for this host, and never
prints the secret.
## `runner-token-rotate.sh`
Mints a fresh instance-level registration token from the Gitea API and writes it into
`apps/wave-1/gitea-actions-runner-secret.sops.yaml` via `sops set`. **The token value is
never printed.**
./infra/gitea/runner-token-rotate.sh
A fresh token is usually **not sufficient on its own**. `act_runner` registers exactly once
and persists its identity in `/data/.runner` on the `act-runner-data` PVC. If Gitea no
longer holds a matching runner row, the pod starts, sees `.runner`, **skips registration**,
and polls with an identity Gitea does not recognise — so it never appears in the runner
list. That is precisely the observed symptom: zero runners, pod running, no error anyone
looks at. Clearing the PVC is what forces a real re-registration; the script prints the
commands.
## Sequence — order matters
1. **Get an Actions runner registered** — `runner-token-rotate.sh`, then clear the PVC so
the runner actually re-registers, then confirm it shows `online` in the API. Do not
skip the confirmation: the whole reason this went unnoticed is that a runner was
*recorded* as online without anyone checking.
2. **Watch the gate actually report on a real PR**, and note the context name it produced.
3. **Only then set `enable_status_check: true`** with that exact context.
4. Add the human reviewer as a repo collaborator, then raise `required_approvals` to 1.
> **Do not do step 3 before step 1.** A required status check with no runner leaves every
> PR permanently pending — including the PR that would fix it. The same applies to
> `gate.yml`'s `conformance` job: it is `if: false` and never runs, yet still publishes a
> `gate / conformance (pull_request)` context. Never list that one as required.