From 911456e16519e1e1cc6ab906ed3bb824f0c68e77 Mon Sep 17 00:00:00 2001
From: kisfenyo <kisfenyo@dooplex.local>
Date: Sat, 27 Dec 2025 15:51:38 +0100
Subject: [PATCH] added DB-system

---
 database-system/postgresql/cluster.yaml | 60 +++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 database-system/postgresql/cluster.yaml

diff --git a/database-system/postgresql/cluster.yaml b/database-system/postgresql/cluster.yaml
new file mode 100644
index 0000000..37af966
--- /dev/null
+++ b/database-system/postgresql/cluster.yaml
@@ -0,0 +1,60 @@
+---
+apiVersion: postgresql.cnpg.io/v1
+kind: Cluster
+metadata:
+  name: postgresql
+  namespace: database-system
+spec:
+  instances: 1  # Start with 1, scale to 3 later for HA
+  
+  # PostgreSQL version
+  imageName: ghcr.io/cloudnative-pg/postgresql:17.2
+  
+  # Bootstrap
+  bootstrap:
+    initdb:
+      database: postgres
+      owner: postgres
+      secret:
+        name: postgres-superuser
+  
+  # Storage
+  storage:
+    storageClass: longhorn
+    size: 50Gi
+  
+  # Resources
+  resources:
+    requests:
+      memory: "512Mi"
+      cpu: "500m"
+    limits:
+      memory: "4Gi"
+      cpu: "2000m"
+  
+  # Monitoring
+  monitoring:
+    enablePodMonitor: true
+  
+  # Backup configuration (optional but recommended)
+  #backup:
+  #  barmanObjectStore:
+  #    destinationPath: s3://your-bucket/postgresql-backups/
+      # Configure your S3-compatible storage here
+      # Or skip backups for now and add later
+      
+  # PostgreSQL configuration
+  postgresql:
+    parameters:
+      max_connections: "200"
+      shared_buffers: "256MB"
+      effective_cache_size: "1GB"
+      maintenance_work_mem: "64MB"
+      checkpoint_completion_target: "0.9"
+      wal_buffers: "16MB"
+      default_statistics_target: "100"
+      random_page_cost: "1.1"
+      effective_io_concurrency: "200"
+      work_mem: "2621kB"
+      min_wal_size: "1GB"
+      max_wal_size: "4GB"