Add a dummy postgres db

Author: Utwo

README.md

@@ -17,6 +17,7 @@ A GitOps repository with Kubernetes tools simulating a real enterprise project.
   - ApplicationSet for preview PR
   - Argo Rollouts (Blue-Green & Canary Deployments)
   - Kargo for progressive rollouts between environments
+  - Postgres DB operator
 - **Monitoring & Logging:**
   - VM Metrics
   - Alert Manager
@@ -41,7 +42,6 @@ A GitOps repository with Kubernetes tools simulating a real enterprise project.
 - [vmalertmanagerconfig](https://docs.victoriametrics.com/operator/resources/vmalertmanagerconfig/)
 - [victoria-metrics-anomaly](https://github.com/VictoriaMetrics/helm-charts/tree/master/charts/victoria-metrics-anomaly)
 - Gvizor
-- Postgres DB operator
 - Atlas schema migration
 - Service mesh
 - Crossplane

services/argo-apps/postgres-db.yaml

@@ -0,0 +1,18 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: postgres-db
+  namespace: argocd
+spec:
+  project: infra
+  sources:
+    - repoURL: https://github.com/Utwo/k8s-playground
+      path: ./services/postgres-db
+      targetRevision: HEAD
+  destination:
+    namespace: postgres-db
+    name: in-cluster
+  syncPolicy:
+    # automated: {}
+    syncOptions:
+      - CreateNamespace=true

services/postgres-db/cnpg-backup.yaml

@@ -0,0 +1,10 @@
+apiVersion: postgresql.cnpg.io/v1
+kind: ScheduledBackup
+metadata:
+  name: postgres-db-backup
+spec:
+  schedule: "0 0 0 * * *"
+  immediate: true
+  backupOwnerReference: self
+  cluster:
+    name: postgres-db

services/postgres-db/cnpg-cluster.yaml

@@ -0,0 +1,26 @@
+apiVersion: postgresql.cnpg.io/v1
+kind: Cluster
+metadata:
+  name: postgres-db
+spec:
+  instances: 1
+  imageName: ghcr.io/cloudnative-pg/postgresql:17.4
+  bootstrap:
+    initdb:
+      database: app
+      owner: app-user
+  resources:
+    requests:
+      memory: "512Mi"
+    limits:
+      memory: "512Mi"
+  storage:
+    size: 1Gi
+  monitoring:
+    enablePodMonitor: true
+  # backup:
+  #   retentionPolicy: 30d
+  #   barmanObjectStore:
+  #     destinationPath: s3://app-backup
+  #     s3Credentials:
+  #       inheritFromIAMRole: true