add CloudNativePG operator and HA postgres cluster

README.md

@@ -1 +1,37 @@
 # k8s-asxpio-gitops
+
+GitOps repo for self-hosted Kubernetes cluster on Hetzner, managed by ArgoCD.
+
+## Cluster
+
+- **Provider:** Hetzner Cloud, `hel1` (Helsinki)
+- **Infrastructure:** [../hcloud-k8s](../hcloud-k8s) (Terraform, [hcloud-k8s/kubernetes](https://registry.terraform.io/modules/hcloud-k8s/kubernetes/hcloud) module v3.27.2)
+- **OS:** Talos Linux
+- **Nodes:** 1x control plane (`cx23`) + 2x worker (`cx23`) — each 2 vCPU, 4 GB RAM
+- **Ingress:** Traefik v35.0.1 (Helm), Let's Encrypt TLS via ACME TLS challenge (`certs@asxp.io`)
+- **Storage:** `hcloud-volumes` StorageClass
+- **Cert Manager:** enabled
+- **Terraform state:** S3-compatible object storage (`hel1.your-objectstorage.com`, bucket `k8s-asxpio-main`)
+
+## DNS
+
+`*.k8s.asxp.io` — wildcard pointing to cluster ingress IP.
+
+## Apps
+
+| App | Namespace | URL |
+|-----|-----------|-----|
+| ArgoCD | `argocd` | — |
+| CNPG Operator | `cnpg-system` | — |
+| PostgreSQL (HA) | `postgres` | 3 instances (CloudNativePG) |
+| Forgejo | `forgejo` | `git.czsk.it` / `git.asxp.io` |
+| WatchParty | `watchparty` | `watch.k8s.asxp.io` |
+
+## Structure
+
+```
+apps/
+  app-of-apps.yaml    # bootstrap — points ArgoCD at this directory
+  <app>.yaml           # ArgoCD Application per app
+  <app>/               # raw manifests per app
+```

apps/cnpg-operator.yaml

@@ -0,0 +1,20 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: cnpg-operator
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: https://cloudnative-pg.github.io/charts
+    chart: cloudnative-pg
+    targetRevision: 0.28.0
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: cnpg-system
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true

apps/postgres.yaml

@@ -0,0 +1,20 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: postgres
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: ssh://git@git.czsk.it/asxpi/k8s-asxpio-gitops.git
+    targetRevision: main
+    path: apps/postgres
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: postgres
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true

apps/postgres/cluster.yaml

@@ -0,0 +1,23 @@
+apiVersion: postgresql.cnpg.io/v1
+kind: Cluster
+metadata:
+  name: postgres-cluster
+  namespace: postgres
+spec:
+  instances: 2
+  primaryUpdateStrategy: unsupervised
+
+  enableSuperuserAccess: true
+
+  postgresql:
+    parameters:
+      shared_buffers: "256MB"
+      max_connections: "200"
+
+  storage:
+    size: 10Gi
+    storageClass: hcloud-volumes
+
+  affinity:
+    enablePodAntiAffinity: true
+    topologyKey: kubernetes.io/hostname

apps/postgres/db-watchparty.yaml

@@ -0,0 +1,10 @@
+apiVersion: postgresql.cnpg.io/v1
+kind: Database
+metadata:
+  name: watchparty-db
+  namespace: postgres
+spec:
+  name: watchparty
+  owner: app
+  cluster:
+    name: postgres-cluster

apps/watchparty/deployment.yaml

@@ -24,6 +24,13 @@ spec:
               value: "8080"
             - name: HOST
               value: "0.0.0.0"
+            - name: PG_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: postgres-cluster-app
+                  key: password
+            - name: DATABASE_URL
+              value: postgresql://app:$(PG_PASSWORD)@postgres-cluster-rw.postgres.svc.cluster.local:5432/watchparty
           resources:
             requests:
               memory: 256Mi