feat(postgres): upgrade shared database to PostgreSQL 17

Move the shared postgres service from 15.19 to 17.6 as the postgres17 StatefulSet with its own PVC, extend the initdb and ingress policy with the statuspage database, and drop the now-unused per-app postgres manifests for authentik, gitea and netronome.

postgres/k8s/network-policy.yaml

@@ -6,7 +6,7 @@ metadata:
 spec:
   podSelector:
     matchLabels:
-      app.kubernetes.io/name: postgres
+      app.kubernetes.io/name: postgres17
   policyTypes:
     - Ingress
   ingress:
@@ -23,6 +23,9 @@ spec:
         - namespaceSelector:
             matchLabels:
               kubernetes.io/metadata.name: penpot
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: statuspage
       ports:
         - protocol: TCP
           port: 5432

postgres/k8s/postgres.yaml

@@ -4,11 +4,11 @@ metadata:
   name: postgres
   namespace: database
   labels:
-    app.kubernetes.io/name: postgres
+    app.kubernetes.io/name: postgres17
     app.kubernetes.io/part-of: homelab-database
 spec:
   selector:
-    app.kubernetes.io/name: postgres
+    app.kubernetes.io/name: postgres17
   ports:
     - name: postgres
       port: 5432
@@ -17,22 +17,22 @@ spec:
 apiVersion: apps/v1
 kind: StatefulSet
 metadata:
-  name: postgres
+  name: postgres17
   namespace: database
 spec:
-  serviceName: postgres
+  serviceName: postgres17
   replicas: 1
   selector:
     matchLabels:
-      app.kubernetes.io/name: postgres
+      app.kubernetes.io/name: postgres17
   template:
     metadata:
       labels:
-        app.kubernetes.io/name: postgres
+        app.kubernetes.io/name: postgres17
     spec:
       containers:
         - name: postgres
-          image: postgres:15.19-alpine
+          image: postgres:17.6-alpine
           ports:
             - name: postgres
               containerPort: 5432
@@ -66,19 +66,28 @@ spec:
             initialDelaySeconds: 30
             periodSeconds: 20
       volumes:
+        - name: postgres-data
+          persistentVolumeClaim:
+            claimName: postgres17-data
         - name: initdb
           configMap:
             name: postgres-initdb
             defaultMode: 0755
-  volumeClaimTemplates:
-    - metadata:
-        name: postgres-data
-      spec:
-        accessModes: ["ReadWriteOnce"]
-        storageClassName: local-path-retain
-        resources:
-          requests:
-            storage: 20Gi
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: postgres17-data
+  namespace: database
+  labels:
+    app.kubernetes.io/name: postgres17
+    app.kubernetes.io/part-of: homelab-database
+spec:
+  accessModes: ["ReadWriteOnce"]
+  storageClassName: local-path-retain
+  resources:
+    requests:
+      storage: 20Gi
 ---
 apiVersion: v1
 kind: ConfigMap
@@ -94,6 +103,7 @@ data:
     : "${GITEA_DB_PASSWORD:?GITEA_DB_PASSWORD is required}"
     : "${NETRONOME_DB_PASSWORD:?NETRONOME_DB_PASSWORD is required}"
     : "${PENPOT_DB_PASSWORD:?PENPOT_DB_PASSWORD is required}"
+    : "${STATUSPAGE_DB_PASSWORD:?STATUSPAGE_DB_PASSWORD is required}"
 
     create_role_and_database() {
       local role="$1"
@@ -113,3 +123,4 @@ data:
     create_role_and_database gitea gitea "$GITEA_DB_PASSWORD"
     create_role_and_database netronome netronome "$NETRONOME_DB_PASSWORD"
     create_role_and_database penpot penpot "$PENPOT_DB_PASSWORD"
+    create_role_and_database statuspage statuspage "$STATUSPAGE_DB_PASSWORD"

postgres/k8s/secrets.yaml.example

@@ -10,3 +10,4 @@ stringData:
   GITEA_DB_PASSWORD: ""
   NETRONOME_DB_PASSWORD: ""
   PENPOT_DB_PASSWORD: ""
+  STATUSPAGE_DB_PASSWORD: ""