feat(db): Migrate to CloudNativePG

manifests/grafana/database.yaml

@@ -0,0 +1,31 @@
+apiVersion: postgresql.cnpg.io/v1
+kind: Cluster
+metadata:
+  name: grafana-db
+  namespace: monitoring
+
+spec:
+  instances: 1
+
+  storage:
+    size: 2Gi
+    storageClass: flat-storage-class
+
+  bootstrap:
+    initdb:
+      database: grafana
+      owner: grafana
+      secret:
+        name: grafana-db
+
+  postgresql:
+    pg_hba:
+      - host all all all md5
+
+  resources:
+    requests:
+      cpu: 100m
+      memory: 100Mi
+    limits:
+      cpu: 500m
+      memory: 500Mi

manifests/grafana/deployment.yaml

@@ -61,6 +61,20 @@ spec:
                 secretKeyRef:
                   name: grafana-secrets
                   key: admin-password
+            - name: GF_DATABASE_TYPE
+              value: postgres
+            - name: GF_DATABASE_USER
+              valueFrom: 
+                secretKeyRef:
+                  name: grafana-db
+                  key: username
+            - name: GF_DATABASE_PASSWORD
+              valueFrom: 
+                secretKeyRef:
+                  name: grafana-db
+                  key: password
+            - name: GF_DATABASE_URL
+              value: "postgres://$(GF_DATABASE_USER):$(GF_DATABASE_PASSWORD)@grafana-db-rw.monitoring.svc.cluster.local/grafana"
       volumes:
         - name: grafana-pv
           persistentVolumeClaim:

manifests/grafana/kustomization.yaml

@@ -5,5 +5,6 @@ resources:
   - pvc.yaml
   - service.yaml
   - ingress.yaml
+  - database.yaml
   - datasources.yaml
   - deployment.yaml