## Summary
Brings up the Adelaide / Heidi / Addie baby shower app on ringtail k3s with the public/private split that the app's hosting contract calls for: `shower.eblu.me` (public, via Fly proxy) and `shower.ops.eblu.me` (tailnet). App is consumed as a wheel from the Forgejo PyPI index — source lives at [`adelaide-baby-shower-app`](https://forge.eblu.me/eblume/adelaide-baby-shower-app).
### What's included
- **ArgoCD app + manifests** under `argocd/manifests/shower/` (deployment, service, ProxyGroup ingress, ConfigMap for `DJANGO_DEBUG`/`DJANGO_ADMIN_URL`, ExternalSecret for `DJANGO_SECRET_KEY` from 1Password item `Shower (blumeops)`, NFS PV on sifaka, RWX media PVC, RWO local-path data PVC for SQLite). Recreate rollout because SQLite is single-writer.
- **Public surface** (`fly/`): new `shower.eblu.me` server block proxying to `shower.ops.eblu.me`. `/admin/` returns 403 at the edge except `/admin/login/` and `/admin/logout/`, which are rate-limited via a new `shower_auth` zone. `X-Clacks-Overhead` on. GNU Terry Pratchett.
- **fail2ban** filter (`shower-admin-login.conf`) matching 401/403/429 on `/admin/login/` and jail (`shower.conf`) with `maxretry=5/findtime=600/bantime=3600`. The `nginx-deny` action was generalized to take a per-jail `nginx_deny_file` so the shower has its own deny list (forge keeps using the legacy default).
- **Caddy** route on indri (`shower.ops.eblu.me` → `https://shower.tail8d86e.ts.net`).
- **Pulumi** Gandi CNAME `shower.eblu.me → blumeops-proxy.fly.dev.`.
- **Grafana** APM dashboard `configmap-shower-apm.yaml` (request rate, error rate, failed admin login count, latency percentiles, bandwidth, access logs) mirroring `docs-apm.json` with a `host="shower.eblu.me"` filter.
- **Container** `containers/shower/default.nix` — `dockerTools.buildLayeredImage` with a nixpkgs Python and a startup wrapper that creates `/app/data/.venv`, pip-installs `adelaide-baby-shower-app==1.0.0` from the forge PyPI index on first boot, runs migrations + collectstatic, and execs gunicorn. A `local_settings.py` shim pins `DATABASES.NAME`/`MEDIA_ROOT`/`STATIC_ROOT` to absolute paths so they don't end up in site-packages.
- **Docs** runbook at `docs/how-to/operations/shower-app.md` linked from the apps registry, plus changelog fragments.
### Defense layers on the public surface
1. fly nginx geo+fail2ban `$shower_banned` (per-service deny list)
2. fly nginx `limit_req zone=shower_auth` (3 r/s per Fly-Client-IP)
3. django-axes (5 fails / 1h, keyed on username+ip_address)
4. edge `/admin/` block (returns 403 for anything that isn't login/logout)
## Prerequisites for the user to do (NOT in this PR)
Halted on these per request — they touch shared/manual systems:
- [x] **NFS share** on sifaka: `/volume1/shower`, NFS rule for ringtail RW, `chown 1000:1000`
- [ ] **1Password item** `Shower (blumeops)` in the blumeops vault with a freshly minted `secret-key` field (`openssl rand -base64 48`) — do NOT reuse anything that has lived in git
- [ ] **Container build**: `mise run container-build-and-release shower`, then update `images[].newTag` in `argocd/manifests/shower/kustomization.yaml` to the resulting `v1.0.0-<sha>-nix`
- [x] **DNS**: `mise run dns-up` after merge
- [x] **Fly cert**: `fly certs add shower.eblu.me -a blumeops-proxy`
- [ ] **Caddy push**: `mise run provision-indri -- --tags caddy`
- [ ] **Fly redeploy** to pick up the new nginx block + fail2ban jail: `mise run fly-deploy`
- [ ] **ArgoCD sync**: `argocd app set shower --revision shower-app-deploy && argocd app sync shower` to test from this branch before merging
## Test plan
- [ ] Container builds successfully on nix-container-builder runner
- [ ] Pod starts, migrations run, gunicorn answers on :8000
- [ ] `kubectl --context=k3s-ringtail -n shower logs deploy/shower` clean
- [ ] `curl -sf https://shower.ops.eblu.me/` returns the splash page (tailnet)
- [ ] `curl -I -H "Host: shower.eblu.me" https://blumeops-proxy.fly.dev/` returns 200 (pre-DNS verification)
- [ ] `curl -I -H "Host: shower.eblu.me" https://blumeops-proxy.fly.dev/admin/users/` returns 403 (edge block)
- [ ] `curl -I -H "Host: shower.eblu.me" https://blumeops-proxy.fly.dev/admin/login/` returns a Django login response
- [ ] After DNS is up: `curl -I https://shower.eblu.me/` returns 200 with `X-Clacks-Overhead`
- [ ] Grafana dashboard "Shower APM" appears and starts showing traffic
- [ ] `mise run services-check` passes
Reviewed-on: #349
Comprehensive docs pass reflecting the new Fly proxy architecture:
- Fly proxy routes through Caddy on indri (not per-service TS Ingress)
- Direct WireGuard peering via --port=41641 pinning
- DERP relay performance lesson in Tailscale docs
- Caddy now in public traffic path
- indri tagged as flyio-target
- Removed fly-reload references
- Updated architecture diagrams and per-service setup guide
- Added changelog fragment
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
## Summary
- Replace per-request DNS resolution (variable-based `proxy_pass`) with static `upstream` blocks and `keepalive` connection pools
- Reuses TLS connections through the Tailscale tunnel instead of handshaking per request
- Add `mise run fly-reload` for nginx config reload without full redeploy (re-resolves upstream DNS)
## Trade-off
DNS is resolved at config load, not per-request. If Tailscale Ingress pods get new IPs (restart, reschedule), `mise run fly-reload` is needed. A Grafana alert will be added to detect this.
## Still TODO on this branch
- [ ] Grafana alert for upstream unreachable (triggers fly-reload reminder)
- [ ] Docs pass
- [ ] Deploy from branch and verify latency improvement
- [ ] Changelog fragment
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Reviewed-on: #337
- Consolidate 4 Authentik Nix derivation docs into one card
(authentik-nix-build-components.md)
- Merge build-grafana-container + build-grafana-sidecar into
build-grafana-images.md
- Move agent-change-process from how-to/ to explanation/ (it's a
methodology doc, not a task guide)
- Extract Caddy custom build section from reference card into
how-to/deployment/build-caddy-with-plugins.md
- Move expose-service-publicly from how-to/ to tutorials/ (it's a
comprehensive walkthrough, not a quick task reference)
- Update all wiki-link references across affected docs
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-15 19:55:59 -07:00
Renamed from docs/how-to/configuration/expose-service-publicly.md (Browse further)
