docs: rewrite CLAUDE.md/CLAUDE.example.md for ArgoCD GitOps, add gitops-workflow.md
CLAUDE.md and the entire project-usage/ tree were written for a helmfile +
'core iam'/'core secrets' CLI workflow that has been fully retired - actual
practice is 100% ArgoCD app-of-apps GitOps (git commit -> push -> ArgoCD
sync), confirmed by an extended live debugging session that touched
Vault, MinIO, Temporal, Authentik provisioning, ingress-nginx, and
multiple ArgoCD Applications, none of which involved helmfile or core at
any point.
CLAUDE.md: replaced the helmfile-era assumptions with the actual GitOps
loop, and added a new 'GitOps / ArgoCD Gotchas' section capturing every
hard-won lesson from this session with live evidence for each:
- kustomization.yaml resources: allowlists silently dropping new files
- kustomization.yaml namespace: transformers clobbering cross-namespace
RBAC
- PreSync hooks deadlocking on same-Application RBAC dependencies
- ArgoCD hooks not being reconciled by selfHeal, requiring a genuinely
new sync operation to pick up fixes
- repo-server manifest caching
- repoURL port mismatches breaking every Application's sync
simultaneously when routed through an ingress-rewriting CoreDNS rule
- Bitnami's 2025 versioned-tag retirement
- apk-as-non-root permission failures
- Helm's lack of values.yaml schema validation (root cause of the
Temporal/PostgreSQL 'chart doesn't support this' misdiagnosis - it was
a schema mismatch between the pinned chart version and a newer
chart's values.yaml example, silently a no-op)
CLAUDE.example.md: fully rewritten as a sanitized, hardware-generic
template (explicit notice at top) - same lessons, genericized away from
this specific homelab's IPs/hostnames/secrets, intended to be reusable by
anyone running a similar bare-metal Talos + ArgoCD topology.
project-usage/gitops-workflow.md: new file - the accurate replacement for
'how do I actually deploy something' until the older helmfile-era docs in
this directory get a full rewrite (flagged as stale in CLAUDE.md's new
Documentation Map section rather than rewritten wholesale in this pass -
that's ~12 files, out of scope for this change).
This commit is contained in:
+179
-55
@@ -1,86 +1,210 @@
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# CLAUDE.md — Homelab Integration Guide
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# CLAUDE.md — Homelab Integration Guide (Example / Reusable Template)
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|
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**Homelab:** A bare-metal three-node Kubernetes cluster running Talos Linux with a full observability stack, SSO via Authentik, secret management via Vault, and CI/CD infrastructure (Forgejo + Argo CD, deployed).
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> **This is a sanitized template.** Copy to `CLAUDE.md`, fill in your own
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> node IPs/hostnames/secrets, and delete this notice. Nothing in this file
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> should contain real credentials, real IPs beyond illustrative examples, or
|
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> anything that would matter if this file became public. It's meant to be
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> shared across homelabs running similar hardware/topology (3-node bare-metal
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> Talos Kubernetes + ArgoCD GitOps), not just this one.
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## Cluster Topology (3 control-plane HA, since 2026-07-20)
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**Homelab:** A bare-metal N-node Kubernetes cluster running Talos Linux with a
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full observability stack, SSO via Authentik, secret management via Vault, and
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CI/CD infrastructure (self-hosted git forge + Argo CD).
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|
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## Cluster Topology (adjust to your hardware)
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| Node | IP | Zone | Scheduling | Storage |
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|------|----|----|-----------|---------|
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| `talos-cp-1` | .213 | az-a | schedulable (all workloads) | sole Longhorn node |
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| `talos-cp-2` | .163 | az-b | dedicated (`NoSchedule`) | none |
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| `talos-cp-3` | .166 | az-c | dedicated (`NoSchedule`) | none |
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| `<node-1>` | `<ip>` | az-a | schedulable (all workloads) | sole storage node (if single-node storage) |
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| `<node-2>` | `<ip>` | az-b | dedicated (`NoSchedule`) | none |
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| `<node-3>` | `<ip>` | az-c | dedicated (`NoSchedule`) | none |
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3 voting etcd members peering on the LAN. Only `talos-cp-1` runs workloads and
|
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holds storage → stateful services are single-instance (e.g. CNPG `ddb-cluster`
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= 1 instance). API endpoint is single-homed to `.213` (no VIP yet).
|
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If your storage layer (Longhorn, local-path, etc.) only runs on one node,
|
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every stateful workload pinned to that storage class is effectively
|
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single-instance regardless of your control-plane HA count — document that
|
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explicitly here, it changes your failure-mode assumptions everywhere else.
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|
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## Deployment Model: ArgoCD GitOps (app-of-apps)
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|
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```
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git commit → git push (your git forge) → ArgoCD auto-sync → cluster
|
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```
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|
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Structure:
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- One root `Application` (`k8s/argocd/root/`) pointing at a directory of
|
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child `Application` manifests (`k8s/argocd/apps/*.yaml`)
|
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- Each child Application is either:
|
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- A remote Helm chart + a **second** git source (`ref: values`) supplying
|
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just the values file — lets you pin an upstream chart version while
|
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keeping your values under normal git history/review
|
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- A plain git directory of raw manifests (optionally with a
|
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`kustomization.yaml`)
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- `argocd.argoproj.io/sync-wave` annotations control ordering across
|
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Applications (lower number syncs first)
|
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|
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**Never `kubectl apply`/`patch`/`delete` a resource ArgoCD manages**, except:
|
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- Pure cleanup of stuck/dead state (e.g. deleting a permanently-failed hook
|
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Job so the next real sync can create a fresh one) — this is not a config
|
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change, just clearing wreckage that GitOps itself won't clean up
|
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automatically (see Gotchas below)
|
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- Genuine one-time bootstrap circular dependencies (e.g. Vault
|
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`operator init`/unseal — nothing can configure Vault's own unseal keys
|
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before Vault has generated them)
|
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|
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## Hard Rules (adapt freely, but keep something like these)
|
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|
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🔴 **Identify and document your storage/stateful-singleton node explicitly.**
|
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Whatever node holds your CSI driver's data (Longhorn, local-path, etc.),
|
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renaming or wiping it orphans every PVC pinned there. Name it here, in
|
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caps, so nobody "cleans up" it by accident.
|
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|
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🔴 **If you run multi-member etcd across a LAN + VPN/WireGuard overlay,
|
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pin the advertised subnet explicitly** (e.g. Talos's
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`cluster.etcd.advertisedSubnets`). Without it, etcd may advertise on the
|
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wrong interface and new members hang as non-promoting learners.
|
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|
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🔴 **Run your IaC formatter (terraform fmt, etc.) before every commit
|
||||
that touches infra code.** Wire this into CI as a hard gate, not a
|
||||
suggestion.
|
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|
||||
🔴 **Whatever your source of truth is (Terraform, ArgoCD, both) — never
|
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manually mutate resources it manages.** State drift is the single most
|
||||
common cause of "why did my last apply undo my manual fix" confusion.
|
||||
Fix the source, re-apply/re-sync, never bypass.
|
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|
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🔴 **Never delete a PVC without confirming replica count / backup
|
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freshness first.** This is always a one-way door.
|
||||
|
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🔴 **Decide your commit message convention up front and enforce it.**
|
||||
(This template's origin project uses: no co-authored-by footers, single-line
|
||||
commit summarizing what/why, solo-authorship assumption — adjust to your
|
||||
team's norms.)
|
||||
|
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🔴 **Decide your git workflow (rebase vs merge) up front and stick to it**
|
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cluster-wide, across every contributor/agent working in the repo.
|
||||
|
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🔴 **Long-running commands should not block a synchronous session** — run
|
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them in the background and poll, especially anything that waits on a
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Kubernetes rollout, an image pull, or a Terraform apply.
|
||||
|
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## GitOps / ArgoCD Gotchas (transferable to any ArgoCD-based homelab)
|
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|
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🟠 **A `kustomization.yaml` with an explicit `resources:` allowlist
|
||||
silently drops anything you forget to list.** No error, no drift shown in
|
||||
ArgoCD's UI — it just reports `Synced/Healthy` against a manifest set that
|
||||
never included your new file. Always run `kubectl kustomize <dir>/`
|
||||
locally before pushing to confirm exactly what ArgoCD will build.
|
||||
|
||||
🟠 **A top-level `namespace:` transformer in `kustomization.yaml` rewrites
|
||||
`metadata.namespace` on every resource it builds** — including RBAC
|
||||
bindings deliberately targeting a *different* namespace (e.g. granting a
|
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ServiceAccount in namespace A read access to Secrets in namespace B). If
|
||||
any manifest needs cross-namespace RBAC, either drop the transformer
|
||||
(safe if every resource already sets its own explicit namespace) or give
|
||||
that manifest its own Application/directory.
|
||||
|
||||
🟠 **PreSync hooks run before an Application's own normal resources are
|
||||
synced.** A PreSync Job that depends on RBAC/ServiceAccounts defined as
|
||||
plain (non-hook) resources in the *same* Application will deadlock — it
|
||||
tries to start before its own permissions exist. Use PostSync instead if
|
||||
the hook needs resources from its own Application, or move the
|
||||
prerequisite RBAC into an earlier sync-wave Application.
|
||||
|
||||
🟠 **ArgoCD hooks are not continuously reconciled by `selfHeal`.** Once a
|
||||
hook Job finishes (success, or exhausts `backoffLimit`), it's only
|
||||
deleted+recreated during an *actual new Sync operation* — not by passive
|
||||
drift detection, even with `automated.selfHeal: true` on. If you fix a
|
||||
broken hook's spec and push, the Application's `status.sync.revision` can
|
||||
show "caught up" while the live hook resource is still the old, broken
|
||||
one, because no new operation actually re-ran it. To force it: delete the
|
||||
stuck hook (clear `argocd.argoproj.io/hook-finalizer` manually if it's
|
||||
stuck `Terminating`), and if that alone doesn't trigger a fresh full sync,
|
||||
delete + re-`kubectl apply -f` the Application object itself.
|
||||
|
||||
🟠 **If you route ArgoCD's own `repoURL` through an ingress/reverse-proxy
|
||||
hostname that only listens on 80/443, don't use a non-standard port in the
|
||||
URL** — it'll silently time out trying to reach a port the proxy never
|
||||
opened, and depending on your setup this can block *every* Application's
|
||||
sync simultaneously (repo-server can't fetch git refs for anything).
|
||||
|
||||
🟠 **Don't pin exact version tags for images from registries that don't
|
||||
guarantee tag retention** (Bitnami stopped publishing versioned tags for
|
||||
free-tier images in 2025 — only `latest` + sha256 digests remain). Verify
|
||||
a tag actually exists before pinning it, or prefer minimal base images +
|
||||
a stdlib-only runtime download (e.g. Python's `urllib.request` to fetch a
|
||||
static binary) to avoid depending on any third party's tagging policy.
|
||||
|
||||
🟠 **Non-root containers can't `apk add`/`apt install` in most default
|
||||
base images** — package manager directories are root-owned. Use a
|
||||
world-writable scratch dir (`/tmp`) for anything you need to
|
||||
download/install at runtime instead.
|
||||
|
||||
🟠 **Helm does not validate unknown `values.yaml` keys.** A typo, or a
|
||||
values schema copied from the wrong chart *version's* docs/examples, is
|
||||
silently a no-op — not an error. Before concluding "this chart doesn't
|
||||
support X," clone the chart at your exact pinned version/tag and run
|
||||
`helm template` against your real values file, then diff the rendered
|
||||
output. Don't trust a chart's current `main`-branch example values file
|
||||
if you're pinned to an older release — schemas do change between major
|
||||
versions without warning in your own values file.
|
||||
|
||||
## Service Integration Routes
|
||||
|
||||
**New service? Pick your stack below:**
|
||||
**New service? Pick your stack below** (adjust doc paths to match your repo):
|
||||
|
||||
| Need | Doc | Example |
|
||||
|------|-----|---------|
|
||||
| **Authentication** | `project-usage/authentik-oidc.md` | OAuth2 login, RBAC groups, JWT tokens |
|
||||
| **Async messaging** | `project-usage/sqs-messaging.md` | Kafka topic consumers, fire-and-forget, DLQ |
|
||||
| **Async messaging** | `project-usage/sqs-messaging.md` | Queue consumers, fire-and-forget, DLQ |
|
||||
| **Object storage** | `project-usage/minio-s3.md` | File uploads, backups, log backend |
|
||||
| **CI/CD pipeline** | `project-usage/cicd-workflow.md` | GitHub Actions syntax, image push, Argo CD sync |
|
||||
| **CI/CD pipeline** | `project-usage/cicd-workflow.md` | Pipeline syntax, image push, ArgoCD sync |
|
||||
| **Workflows** | `project-usage/temporal-workflows.md` | Long-running jobs, retries, state machines |
|
||||
| **Database** | `project-usage/database-postgres.md` | CloudNativePG setup, schema migrations, replicas |
|
||||
| **Monitoring** | `project-usage/monitoring-metrics.md` | Prometheus scrape, Grafana dashboard, alerts |
|
||||
| **Secrets** | `project-usage/vault-secrets.md` | Store credentials, rotate tokens, seal/unseal |
|
||||
| **Networking** | `project-usage/networking-ingress.md` | Public HTTPS, hostname routing, TLS |
|
||||
|
||||
## Cluster Essentials
|
||||
## Cluster Essentials (fill in your own inventory)
|
||||
|
||||
**22 namespaces, 18 releases:**
|
||||
```
|
||||
Core: cert-manager, ingress-nginx, kube-system, cilium
|
||||
Storage: longhorn-system, storage (MinIO)
|
||||
Data: ddb (PostgreSQL), iam (Authentik + Vault)
|
||||
Observability: logging (Loki + Grafana), monitoring (Prometheus)
|
||||
Apps: cicd (Forgejo + Argo CD), sqs (Kafka + kmsvc), temporal, story-crater-backend
|
||||
```
|
||||
**Architecture principles (adjust to taste, but these travel well):**
|
||||
- Immutable OS (Talos, or similar — no SSH, fully declarative config)
|
||||
- Secrets in a proper secrets backend (Vault) + SOPS-encrypted manifests in
|
||||
git (`*.enc.yaml`, age-encrypted); never commit plaintext secrets or `.env`
|
||||
- ArgoCD app-of-apps as the single CD source of truth; two-phase bootstrap
|
||||
documented separately (chicken-and-egg: ArgoCD needs to exist before it
|
||||
can deploy itself declaratively — document your exact bootstrap steps)
|
||||
- Pull-based GitOps — no kubeconfig/cluster credentials ever touch your CI
|
||||
runner; the runner only needs push access to git, ArgoCD does the rest
|
||||
- Federated OIDC (one identity provider fronting every service that
|
||||
supports it)
|
||||
|
||||
**Architecture principles:**
|
||||
- Immutable OS (Talos — no SSH, declarative config)
|
||||
- Secrets in Vault + SOPS-encrypted (`*.enc.yaml`, age); never commit `.env`
|
||||
- ArgoCD app-of-apps = CD source of truth (`k8s/argocd/root` → `k8s/argocd/apps/*`); helmfile is deprecated. Two-phase bootstrap in `k8s/argocd/bootstrap/BOOTSTRAP.md`
|
||||
- Pull-based GitOps (Argo CD, no kubeconfig in CI); iterate = `git push` to Forgejo → auto-sync
|
||||
- Federated OIDC (Authentik provider for all services)
|
||||
## Deployment Checklist (per new service)
|
||||
|
||||
|
||||
## Deployment Checklist
|
||||
|
||||
- [ ] Service has Prometheus `/metrics` endpoint or ServiceMonitor
|
||||
- [ ] All credentials in Vault (never in pod env, ConfigMap, or code)
|
||||
- [ ] Ingress rule in `k8s/ingress/` with TLS cert
|
||||
- [ ] Grafana dashboard in `k8s/monitoring/dashboards/svc-<name>.yaml`
|
||||
- [ ] Alert rules in `k8s/monitoring/alerts/svc-<name>-rules.yaml` (if needed)
|
||||
- [ ] Helm release in `helmfile.yaml.gotmpl` with correct `needs:` dependencies
|
||||
|
||||
## Hard Rules
|
||||
|
||||
1. **No kubeconfig in CI** — Argo CD bridges gap (pull-based, never push secrets to runner)
|
||||
2. **Field name = variable name** — In Vault: `talos put cluster/KAFKA_BOOTSTRAP KAFKA_BOOTSTRAP="..."`
|
||||
3. **Secrets via volumes** — Never `--env` flag in pod specs (exposes in `kubectl describe`)
|
||||
4. **External services via Ingress** — All public endpoints via TLS (homelab-ca)
|
||||
5. **Never commit `.env`** — Only `.env.example` in git; real secrets in Vault
|
||||
6. **Never rename or wipe `talos-cp-1` (.213)** — sole Longhorn storage node; renaming orphans its node CR and faults every volume (permanent data loss). Rename/reprovision only the dedicated CPs.
|
||||
7. **Control-plane etcd advertises on the LAN** — keep `cluster.etcd.advertisedSubnets: ["192.168.1.0/24"]`, else Talos advertises on WireGuard and new members hang as etcd learners.
|
||||
- [ ] Prometheus `/metrics` endpoint or ServiceMonitor, if it exposes metrics
|
||||
- [ ] All credentials in your secrets backend (never in plain values.yaml,
|
||||
pod env directly, or committed anywhere in cleartext)
|
||||
- [ ] Ingress rule with TLS, if externally reachable
|
||||
- [ ] Dashboard + alert rules, if metrics are exposed
|
||||
- [ ] ArgoCD `Application` manifest added to the appropriate sync-wave file,
|
||||
**not** a standalone `helm install`/`kubectl apply` run by hand
|
||||
- [ ] Validated locally before push: `kubectl apply --dry-run=client -f`,
|
||||
`kubectl kustomize <dir>/` (if applicable), or `helm template` against
|
||||
the exact pinned chart version (if Helm-sourced)
|
||||
- [ ] After push: confirmed ArgoCD's `status.sync.revision` actually matches
|
||||
your new commit — not just that `status.sync.status` says `Synced`
|
||||
(see Gotchas — a stale hook can hide behind an otherwise-current app)
|
||||
|
||||
## Git & Release
|
||||
|
||||
**Multi-remote push:**
|
||||
```bash
|
||||
git push origin main
|
||||
```
|
||||
|
||||
**Incremental commits (service-layer grouped):**
|
||||
**Incremental commits (service-layer grouped) tend to age well:**
|
||||
- Foundation & Docs
|
||||
- Helmfile & Core Infra
|
||||
- Storage Layer
|
||||
- Core Infra (CNI, ingress, cert management, storage)
|
||||
- Observability Stack
|
||||
- IAM & Secrets
|
||||
- CI/CD & GitOps
|
||||
- Messaging Infrastructure
|
||||
- Messaging / Data Infrastructure
|
||||
- Applications & Utilities
|
||||
|
||||
Grouping by layer (rather than by day or by "misc fixes") makes it much
|
||||
easier to `git log --oneline -- <path>` your way back to *why* a given
|
||||
piece of config looks the way it does, months later.
|
||||
|
||||
@@ -0,0 +1,200 @@
|
||||
# GitOps Workflow (ArgoCD) — Current Practice
|
||||
|
||||
**This is the actual, current deployment workflow.** Every other doc in this
|
||||
directory (`infra-practice.md`, `core-cli-tools.md`, etc.) describes an older
|
||||
`helmfile apply` + `core iam`/`core secrets` CLI-driven workflow that has been
|
||||
retired. This file exists to be the accurate replacement for "how do I
|
||||
actually deploy/change something" until those older docs get a full rewrite.
|
||||
|
||||
## The Loop
|
||||
|
||||
```
|
||||
1. Edit files under k8s/
|
||||
2. Validate locally (see "Validation" below — do not skip this)
|
||||
3. git add -A && git commit -m "..." && git push
|
||||
4. ArgoCD (automated sync + selfHeal on almost every Application) picks it
|
||||
up on its next reconciliation cycle (default ~3 min, or immediately if
|
||||
you trigger a refresh)
|
||||
5. Confirm: kubectl -n argocd get app <name> -o jsonpath='{.status.sync.revision}'
|
||||
matches your new commit hash - not just that status.sync.status says
|
||||
"Synced" (a stale hook resource can hide behind an otherwise-current app,
|
||||
see "ArgoCD Hooks" below)
|
||||
```
|
||||
|
||||
There is no `helmfile apply`, no `core iam create-app`, no manual `helm
|
||||
install` in the current workflow. If you find yourself reaching for any of
|
||||
those, stop — figure out the ArgoCD-native equivalent instead.
|
||||
|
||||
## App-of-Apps Structure
|
||||
|
||||
```
|
||||
k8s/argocd/root/homelab-root.yaml # the one Application ArgoCD bootstraps by hand
|
||||
→ source: k8s/argocd/apps/ # directory of child Application manifests
|
||||
00-substrate.yaml # sync-wave 0: cert-manager, ingress-nginx, CRDs
|
||||
00-secrets.yaml # sync-wave 0: SOPS secrets plugin
|
||||
05-networking.yaml # sync-wave... etc, ascending
|
||||
10-storage-observability.yaml
|
||||
20-logging.yaml
|
||||
30-security.yaml # iam (Authentik, Vault)
|
||||
40-data.yaml # CNPG postgres
|
||||
50-messaging.yaml # Kafka/sqs
|
||||
60-applications.yaml # end-user workloads (Temporal, Portainer, etc.)
|
||||
```
|
||||
|
||||
Each child `Application` either:
|
||||
- Points at a **remote Helm chart** with a **second git source** (`ref:
|
||||
values`) supplying just the values file — lets you pin the chart version
|
||||
independently while your values live under normal review/history, e.g.:
|
||||
```yaml
|
||||
spec:
|
||||
sources:
|
||||
- repoURL: https://example.com/helm-charts
|
||||
chart: some-chart
|
||||
targetRevision: "1.2.3"
|
||||
helm:
|
||||
valueFiles:
|
||||
- $values/k8s/applications/foo/foo-values.yaml
|
||||
- repoURL: https://forgejo.riotpiao.com/riotpiao.com/homelab.git
|
||||
targetRevision: main
|
||||
ref: values
|
||||
```
|
||||
- Or points at a **plain git directory** of raw manifests, optionally with
|
||||
its own `kustomization.yaml`.
|
||||
|
||||
`argocd.argoproj.io/sync-wave: "N"` on the Application's own metadata
|
||||
controls ordering — lower N syncs first. Within a single Application,
|
||||
resource-level sync-wave annotations further order that app's own
|
||||
resources.
|
||||
|
||||
## Validation Before Every Push
|
||||
|
||||
Pick whichever applies:
|
||||
|
||||
```bash
|
||||
# Plain manifests, no kustomization.yaml in the directory
|
||||
kubectl apply --dry-run=client -f path/to/file.yaml
|
||||
|
||||
# Directory has a kustomization.yaml - THIS is what ArgoCD actually builds,
|
||||
# a plain `apply --dry-run` on individual files will NOT catch a resource
|
||||
# missing from the resources: allowlist
|
||||
kubectl kustomize path/to/dir/
|
||||
|
||||
# Helm-sourced Application - render against the EXACT pinned chart version,
|
||||
# not whatever `helm repo` happens to have cached, and not the chart's
|
||||
# current main-branch example values (schemas can differ between versions)
|
||||
git clone --depth 1 <chart-repo-url> /tmp/chart-check
|
||||
cd /tmp/chart-check && git fetch --tags --depth 1 && git checkout <exact-pinned-tag>
|
||||
helm dependency build # if the chart has subchart dependencies
|
||||
helm template . --values /path/to/your/values.yaml --namespace <ns>
|
||||
```
|
||||
|
||||
## ArgoCD Hooks (PreSync / PostSync / Sync)
|
||||
|
||||
Used for one-shot Jobs that need to run at a specific point in an
|
||||
Application's sync (schema migrations, secret-copy jobs, provisioning
|
||||
scripts). Two properties that bite people:
|
||||
|
||||
1. **Ordering is PreSync → Sync (normal resources, by sync-wave) →
|
||||
PostSync.** A PreSync-hooked Job that depends on a ServiceAccount/RBAC
|
||||
defined as *plain* (non-hook) resources in the same Application will
|
||||
deadlock — those get created during the Sync phase, which is *after*
|
||||
PreSync. Symptom: the Job sits "Running" indefinitely, `kubectl
|
||||
describe job` shows `FailedCreate ... serviceaccount ... not found`
|
||||
repeating forever. **If your hook needs resources from its own
|
||||
Application, make it PostSync, not PreSync.**
|
||||
|
||||
2. **Hooks are not continuously reconciled by `selfHeal`.** A completed or
|
||||
failed hook Job only gets deleted+recreated (per
|
||||
`hook-delete-policy: BeforeHookCreation`) during an *actual new Sync
|
||||
operation* — not from ambient drift detection. If you fix a broken
|
||||
hook's spec (image, RBAC, command) and push, the Application's
|
||||
`status.sync.revision` can update to show "caught up" (because the
|
||||
*normal*, non-hook resources genuinely match) while the *live* hook Job
|
||||
is still running the old broken spec, because no fresh sync operation
|
||||
actually re-executed it.
|
||||
|
||||
**To force it, in order of preference:**
|
||||
```bash
|
||||
# 1. Just delete the stuck/failed job - if a legitimate future sync
|
||||
# happens for any other reason, this clears the way for it
|
||||
kubectl -n <ns> delete job <hook-job-name>
|
||||
|
||||
# 2. If it's stuck "Terminating" (ArgoCD's hook-finalizer blocking
|
||||
# deletion because the operation tracking it is itself stuck):
|
||||
kubectl -n <ns> get job <hook-job-name> -o jsonpath='{.metadata.finalizers}'
|
||||
kubectl -n <ns> patch job <hook-job-name> --type json \
|
||||
-p '[{"op":"remove","path":"/metadata/finalizers"}]'
|
||||
|
||||
# 3. If deleting the job alone doesn't trigger a genuinely fresh sync
|
||||
# (check: does a new job appear using your LATEST commit's spec?
|
||||
# compare kubectl -n <ns> get job <name> -o jsonpath='{.spec.template.spec.containers[0].image}'
|
||||
# against what your latest commit says), the Application's own
|
||||
# operation state is stuck. Confirm it has no cascade finalizer first
|
||||
# (Applications don't carry one by default - only delete if this is
|
||||
# empty):
|
||||
kubectl -n argocd get app <app-name> -o jsonpath='{.metadata.finalizers}'
|
||||
# then:
|
||||
kubectl -n argocd delete application <app-name>
|
||||
kubectl apply -f k8s/argocd/apps/<the-file-defining-it>.yaml
|
||||
```
|
||||
Step 3 re-reads current git HEAD from scratch and starts a genuinely new
|
||||
operation — this is the reliable way to actually pick up a hook fix when
|
||||
steps 1-2 don't unstick it.
|
||||
|
||||
## kustomization.yaml Pitfalls
|
||||
|
||||
- **`resources:` is an explicit allowlist, not a directory scan.** Add a new
|
||||
manifest file to a directory that has a `kustomization.yaml`, forget to
|
||||
list it under `resources:`, and ArgoCD will silently never apply it — no
|
||||
error, `Synced/Healthy` shown regardless. Always `kubectl kustomize
|
||||
<dir>/` locally before pushing to see exactly what will be built.
|
||||
- **A top-level `namespace:` transformer rewrites `metadata.namespace` on
|
||||
every resource in the build**, including RBAC bindings that deliberately
|
||||
target a *different* namespace (e.g. a RoleBinding granting cross-
|
||||
namespace Secret access for a sync job's ServiceAccount). If any manifest
|
||||
in the directory needs to live in a different namespace than the
|
||||
transformer specifies, either remove the transformer (safe if every
|
||||
manifest already sets its own explicit `namespace:`) or move that
|
||||
manifest to its own directory/Application entirely.
|
||||
|
||||
## Cross-Namespace Secrets
|
||||
|
||||
Kubernetes Secrets are strictly namespace-scoped — a Deployment in
|
||||
namespace A cannot reference a Secret living in namespace B via
|
||||
`secretKeyRef`, full stop. If a Secret is generated in one namespace (e.g.
|
||||
CNPG auto-generates DB credentials in its own operator namespace) but a
|
||||
consumer lives in a different namespace, you need an explicit copy
|
||||
mechanism. Pattern used in this repo: a small PostSync-hooked Job (see
|
||||
`k8s/applications/temporal/db-secret-sync/copy-job.yaml` for a worked
|
||||
example) with a dedicated ServiceAccount + ClusterRole + two RoleBindings
|
||||
(one per namespace involved) that reads the source Secret and re-creates it
|
||||
in the target namespace. Give this its own Application/sync-wave (earlier
|
||||
than whatever consumes the copied Secret) rather than folding it into an
|
||||
existing Application that has a namespace-transforming `kustomization.yaml`
|
||||
(see above).
|
||||
|
||||
## Common Failure: Everything Shows "Unknown" Sync Status At Once
|
||||
|
||||
If *every* Application (not just one) suddenly shows `Unknown` sync status
|
||||
simultaneously, check the Application controller's logs for the actual
|
||||
`repoURL` fetch error before assuming something is wrong with any
|
||||
individual app's manifests:
|
||||
|
||||
```bash
|
||||
kubectl -n argocd logs argocd-application-controller-0 --tail=50 | grep -i "failed to list refs\|context deadline"
|
||||
```
|
||||
|
||||
Common cause in a homelab with CoreDNS rewriting your git host to the
|
||||
ingress controller for internal traffic: if `repoURL` uses a non-standard
|
||||
port (`http://forgejo.example.com:3000/...`), and CoreDNS rewrites that
|
||||
hostname to the ingress controller service (which only listens on 80/443),
|
||||
every fetch attempt times out. Fix: use the default-port HTTPS URL
|
||||
(`https://forgejo.example.com/...`) so it actually reaches the ingress
|
||||
controller correctly.
|
||||
|
||||
## See Also
|
||||
|
||||
- `CLAUDE.md` § GitOps / ArgoCD Gotchas — condensed version of the above,
|
||||
cross-referenced from the main project reference
|
||||
- Root `TROUBLESHOOTING.md` — generic Kubernetes SRE methodology, still
|
||||
applicable regardless of deployment mechanism
|
||||
Reference in New Issue
Block a user