home-network-k3s-impl/infra/PROD-STANDUP.md

# Prod cluster standup — the complete command sequence

**Every command below is copy-pasteable and runs from the repo root**, through the pinned dev
container. Nothing here needs a command invented on the spot; that is the point. If a step is not in
this file it is not part of standup.

State as of **2026-09-05**: phases **A** and **B** are DONE on the current hardware. The cluster is
live (k3s v1.36.4 HA, 3 etcd members, kube-vip, Cilium 1.20.1, Longhorn) with `platform` reconciling
and **8/9 HelmReleases Ready, 76/76 pods Running**. Outstanding work is **phase C**, blocked on the
two items in [§Blockers](#blockers).

> **The one guard that matters.** Dev is LIVE and shares the `keithjackson.dev` Cloudflare zone with
> prod. On 2026-09-04 prod deleted every one of dev's public DNS records. `bootstrap/standup.sh`
> therefore **requires** `--expect-server` and compares it against the live API server before running
> anything. There is no override flag. Do not add one.

## Constants

| | |
|---|---|
| kube-API (kube-vip VIP) | `https://192.168.2.9:6443` |
| Gateway / ingress VIP | `192.168.2.20` |
| Nodes | `k3s-prod-1/2/3` — `192.168.2.10 / .11 / .12` |
| Break-glass kubeconfig | `infra/ansible/.cache/prod.kubeconfig` (cert-based; survives OIDC/DNS failure) |
| GitOps source (interim) | `http://192.168.2.132:3000/Home-Network/home-network-k3s-impl.git` branch `main` |
| `BASE_DOMAIN` | `prod.home.keithjackson.dev` — **not** the apex; see §Blockers |

Container paths: the repo is mounted at `/work`, so kubeconfig paths passed to the script are
**repo-relative** (`infra/ansible/.cache/prod.kubeconfig`).

---

## Phase A — bare metal to a joined cluster (Ansible)

Prerequisites that are **not** commands: firmware/BIOS (§1), disk layout (§2), OS install (§3),
network (§4), and SSH + the vaulted `ansible_become_password` in
`inventory/group_vars/k3s_prod/vault.yml` (§5). Ansible cannot escalate on prod without that vault
file. See `infra/PROD-PROVISIONING.md`.

**Install the backports kernel first.** All three prod nodes need ≥6.13 because HP's R21 firmware
publishes a corrupt EFI Memory Attributes Table and Linux 6.12's `efi_memattr_init()` does not
validate it, reserving everything above the table (fixed upstream in 6.13 by `8fbe4c49c0cc`, absent
from `linux-6.12.y`). Prod runs `7.1.8+deb13-amd64` from trixie-backports.

```bash
timeout 3600 infra/devcontainer/dev.sh run env ANSIBLE_CONFIG=/work/infra/ansible/ansible.cfg \
  ansible-playbook /work/infra/ansible/playbooks/node-baseline.yml \
  -i /work/infra/ansible/inventory/hosts.ini -e k3s_hosts=k3s_prod --tags kernel
```

Then the full chain — baseline, k3s HA, Cilium, verify, Flux hand-off. **All three `-e` flags are
required**: a play's `hosts:` is templated before any host exists, so `group_vars` cannot retarget it.

```bash
timeout 3600 infra/devcontainer/dev.sh run env ANSIBLE_CONFIG=/work/infra/ansible/ansible.cfg \
  ansible-playbook /work/infra/ansible/playbooks/site.yml \
  -i /work/infra/ansible/inventory/hosts.ini \
  -e k3s_hosts=k3s_prod -e k3s_primary_hosts=k3s_prod_primary -e k3s_secondary_hosts=k3s_prod_secondary
```

kube-vip is a separate play (not imported by `site.yml`):

```bash
timeout 1800 infra/devcontainer/dev.sh run env ANSIBLE_CONFIG=/work/infra/ansible/ansible.cfg \
  ansible-playbook /work/infra/ansible/playbooks/kube-vip.yml \
  -i /work/infra/ansible/inventory/hosts.ini -e k3s_hosts=k3s_prod
```

Hardware health (read-only; `node_health` asserts the memattr fix took and that all RAM is addressed).

> **The flag is `node_health_hosts`, NOT `k3s_hosts`.** Diagnostic plays deliberately keep their own
> target var so they stay independently pointable while a bring-up run is scoped elsewhere
> (`node-health.yml` → `node_health_hosts`, `memattr-survey.yml` → `memattr_survey_hosts`,
> `vpn.egress.gateway.yml` → `vpn_egress_gateway_hosts`). The consequence is a **silent** one: passing
> `k3s_hosts=k3s_prod` here does not error, it falls through to the `k3s_servers` default and runs
> against **DEV's three nodes**. Verified — this exact mistake was made while writing this file and
> caught only by `--list-hosts`. **Always dry-run the target first:**
>
> ```bash
> timeout 200 infra/devcontainer/dev.sh run env ANSIBLE_CONFIG=/work/infra/ansible/ansible.cfg \
>   ansible-playbook /work/infra/ansible/playbooks/node-health.yml \
>   -i /work/infra/ansible/inventory/hosts.ini -e node_health_hosts=k3s_prod --list-hosts
> ```

```bash
timeout 900 infra/devcontainer/dev.sh run env ANSIBLE_CONFIG=/work/infra/ansible/ansible.cfg \
  ansible-playbook /work/infra/ansible/playbooks/node-health.yml \
  -i /work/infra/ansible/inventory/hosts.ini -e node_health_hosts=k3s_prod
```

## Phase B — Flux bootstrap

`flux-bootstrap.yml` (last play of `site.yml`) shells to `bootstrap/flux/bootstrap.sh`, the single
documented entrypoint. That script now runs the CRD pre-apply as step **[2/4]**, so a cold bootstrap
no longer strands `platform`. The **age private key Secret must exist first** — bootstrap verifies it
and refuses to continue rather than silently skipping decryption
(`bootstrap/sops/age-key-secret.md`).

## Phase C — bring the reconciliation graph up

One script, six steps, each independently runnable and idempotent. **Run them in this order.**

```bash
K=infra/ansible/.cache/prod.kubeconfig
S=https://192.168.2.9:6443
```

### C1 — preflight (read-only, changes nothing)

Asserts the guards that prevent a repeat of the DNS incident and reports every tier's state. **Fails
closed** if `EXTERNALDNS_TXT_OWNER_ID` is empty, still the base sentinel, or `default` (dev's owner).

```bash
timeout 300 infra/devcontainer/dev.sh run bootstrap/standup.sh \
  --kubeconfig infra/ansible/.cache/prod.kubeconfig --expect-server https://192.168.2.9:6443 preflight
```

### C2 — pre-apply chart CRDs (idempotent)

```bash
timeout 600 infra/devcontainer/dev.sh run bootstrap/standup.sh \
  --kubeconfig infra/ansible/.cache/prod.kubeconfig --expect-server https://192.168.2.9:6443 crds
```

### C3 — unwedge stuck Helm releases

A release left in `uninstalling` / `pending-*` cannot be advanced by helm-controller: it reports
`StateError` forever, so `platform` (`wait: true`) never goes Ready and all 10 tiers below it stall.
**Dry run by default** — it prints what it would do and changes nothing:

```bash
timeout 600 infra/devcontainer/dev.sh run bootstrap/standup.sh \
  --kubeconfig infra/ansible/.cache/prod.kubeconfig --expect-server https://192.168.2.9:6443 unwedge
```

To act (this **deletes** the release's Kubernetes objects and lets Flux install cold). Pre-applied
CRDs live **outside** the Helm release and survive, which is exactly why C2 comes first:

```bash
timeout 900 infra/devcontainer/dev.sh run bootstrap/standup.sh \
  --kubeconfig infra/ansible/.cache/prod.kubeconfig --expect-server https://192.168.2.9:6443 \
  --confirm-destructive unwedge
```

### C4 — external-dns safe upgrade

**The most dangerous step in the repo, and the ordering is the entire mitigation.** A Helm upgrade
resets `replicas` to the chart default (1) and applies the new args in ONE operation — there is no
window in which to check the result first. If `--txt-owner-id` were missing, the pod starts as owner
`default`, claims dev's TXT registry entries, and under `policy: sync` **deletes the records behind
them**.

So this step **proves the outcome before causing it**: it renders the chart with the *live*
HelmRelease values and asserts `--txt-owner-id=<owner>` appears, aborting if not. Rendering is
deterministic and touches nothing, which converts a race into a precondition. It then snapshots the
Cloudflare zone, upgrades, re-verifies the live args (scaling to 0 and failing if they are wrong),
and diffs the zone.

```bash
timeout 900 infra/devcontainer/dev.sh run bootstrap/standup.sh \
  --kubeconfig infra/ansible/.cache/prod.kubeconfig --expect-server https://192.168.2.9:6443 externaldns
```

Expected diff: **additions only, all under `prod.home.keithjackson.dev`, all TXT entries owner
`prod`.** Any change to a name outside that subtree, or to a TXT entry owned by another cluster, is a
regression — stop and investigate.

### C5 — resume the tiers, in dependency order

`platform → platform-config → {oauth2-proxy, headlamp, homepage, crafty, apps-wave-0, apps-vms} →
apps-wave-1 → apps-wave-2`. Waits for each to go Ready and **stops at the first that does not** — a
partial, understood bring-up beats a forced green. `velero` is skipped while `S3_BACKUP_ENDPOINT` is
a placeholder (see §Blockers). Long-running; expect it to background.

```bash
timeout 3600 infra/devcontainer/dev.sh run bootstrap/standup.sh \
  --kubeconfig infra/ansible/.cache/prod.kubeconfig --expect-server https://192.168.2.9:6443 resume
```

### C6 — verify

```bash
timeout 900 infra/devcontainer/dev.sh run bootstrap/standup.sh \
  --kubeconfig infra/ansible/.cache/prod.kubeconfig --expect-server https://192.168.2.9:6443 verify
```

### Everything at once

Runs C1→C6 with `unwedge` in **dry-run** mode (no `--confirm-destructive`), so it stops short of the
destructive step by design:

```bash
timeout 3600 infra/devcontainer/dev.sh run bootstrap/standup.sh \
  --kubeconfig infra/ansible/.cache/prod.kubeconfig --expect-server https://192.168.2.9:6443 all
```

---

## Blockers

### 1. `S3_BACKUP_ENDPOINT` is an intentional placeholder — operator decision required

Prod sets `TBD-PROD-S3-BACKUP-ENDPOINT` on purpose: base defaults are the **dev** values, so an
omitted override would make prod silently inherit dev's address (`http://192.168.1.9:9000`), which
prod cannot reach anyway. A loud placeholder beats a silent wrong answer.

It is consumed by **`velero` and `apps-wave-0`**. `velero` is skipped by C5. **`apps-wave-0` still
applies** — the token *is* defined, so strict substitution succeeds — but anything writing to that
endpoint fails at **runtime**, not at apply time. **A green `apps-wave-0` does not mean backups
work.** Until a real prod endpoint is set, treat prod as having **no** backup coverage.

### 2. Prod is on `prod.home.keithjackson.dev`, not the apex

The operator's target layout is dev under `*.dev.home.keithjackson.dev` and prod on the **apex**.
Prod cannot take the apex until dev vacates it, because both clusters would request a
`letsencrypt-prod` wildcard for the *same name set* and race each other's `_acme-challenge` TXT
records, so neither reliably solves DNS-01.

**This does not block phase C.** Prod on its own subtree with `txtOwnerId: prod` collides with
nothing, and standing it up first is strictly better: it proves the whole stack before the flip, so
the cutover becomes a DNS/TLS change on a known-good cluster instead of a bring-up and a cutover at
once. The apex move is `infra/PROD-PROVISIONING.md` §10a, sequence **D** (dev vacates) then **P**.

---

## Not covered here

- **Dev's migration off the apex** — §10a sequence D. Touches Keycloak's issuer, ~12 OIDC client
  redirect URIs, and a rolling k3s restart that invalidates every OIDC kubeconfig. Operator-present.
- **Prod's GitOps cutover** (P5) from the workstation bootstrap Gitea to prod's own in-cluster Gitea.
  `clusters/prod/kustomization.yaml` owns that procedure.
- **Six L2 conformance tests hardcode the apex** and must be parameterized per environment before
  §9's "suite passes green against the prod cluster" can be claimed.