# fleet/data — in-cluster data tier

PostgreSQL 16 (Authentik + OCIS), MongoDB 7 (portal/platform-api) and Redis 7
(cache/sessions) as single-node StatefulSets on **Longhorn** volumes
(`storageClassName: longhorn` — see `../longhorn/`), in the `dezky-data`
namespace. Mirrors the dev docker-compose stack. Self-hosted on the box — no
external/managed DBs (EU-sovereign).

> Prereq: Longhorn must be installed and its `longhorn` StorageClass present
> before applying these (the PVCs request it). See `../longhorn/README.md`.

Stable in-cluster DNS:
- `postgres.dezky-data.svc.cluster.local:5432`
- `mongo.dezky-data.svc.cluster.local:27017`
- `redis.dezky-data.svc.cluster.local:6379`

## Apply

```bash
# 1) Secrets first (out-of-band — NOT in git). Generate values with openssl.
cp secrets.example.yaml /tmp/data-secrets.yaml
$EDITOR /tmp/data-secrets.yaml         # fill every REPLACE_* (openssl rand -hex 24)
kubectl create namespace dezky-data --dry-run=client -o yaml | kubectl apply -f -
kubectl apply -f /tmp/data-secrets.yaml && rm /tmp/data-secrets.yaml

# 2) The data tier
kubectl apply -k .

# 3) Watch them come up
kubectl -n dezky-data rollout status statefulset/postgres
kubectl -n dezky-data rollout status statefulset/mongo
kubectl -n dezky-data rollout status statefulset/redis
kubectl -n dezky-data get pods,pvc
```

## Notes
- **Postgres init runs once** (empty data dir): `postgres-init` ConfigMap
  creates the `authentik` + `ocis` databases/roles using
  `AUTHENTIK_DB_PASSWORD` / `OCIS_DB_PASSWORD` from the secret. If you change
  those passwords later, alter the roles in SQL — re-init won't re-run on an
  existing volume.
- Store all generated passwords in **Bitwarden**. `AUTHENTIK_DB_PASSWORD` /
  `OCIS_DB_PASSWORD` must match what you later give Authentik and OCIS.
- **Backups:** Longhorn snapshots + backs these volumes up to Hetzner Object
  Storage (S3) — see `../longhorn/README.md`. Block snapshots of a live DB are
  crash-consistent at best, so also run `pg_dump`/`mongodump` CronJobs (added
  next) into a Longhorn PVC; restore from those logical dumps, not the raw
  data dirs.
- Single replica each — fine for one node. HA/replicas are a later concern.