split db and app into two deployments

clusters/default/monitoring/jellystat/jellystat-db.yml

@@ -0,0 +1,42 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: jellystat-db
+  namespace: monitoring
+spec:
+  strategy:
+    type: Recreate
+  replicas: 1
+  selector:
+    matchLabels:
+      app: jellystat-db
+  template:
+    metadata:
+      labels:
+        app: jellystat-db
+    spec:
+      containers:
+      - name: jellystat-db
+        image: postgres:alpine
+        ports:
+        - containerPort: 5432
+        env:
+        - name: POSTGRES_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: jellystat-secret
+              key: password
+        - name: POSTGRES_DB
+          value: "jfstat"
+        - name: POSTGRES_USER
+          value: "postgres"
+        - name: PGDATA
+          value: /mnt/postgres/data
+        volumeMounts:
+        - name: postgres-data
+          mountPath: /mnt/postgres
+      volumes:
+      - name: postgres-data
+        persistentVolumeClaim:
+          claimName: jellystat-longhorn