Add prometheus + grafana helm

apps/metrics/app.yaml

@@ -0,0 +1,8 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: kube-system
+metadata:
+  name: metrics
+resources:
+  - app/repository.yaml
+  - app/release.yaml

apps/metrics/app/release.yaml

@@ -0,0 +1,19 @@
+apiVersion: helm.toolkit.fluxcd.io/v2beta1
+kind: HelmRelease
+metadata:
+  name: prometheus
+  namespace: metrics
+spec:
+  releaseName: prometheus
+  chart:
+    spec:
+      chart: kube-prometheus-stack
+      sourceRef:
+        kind: HelmRepository
+        name: prometheus
+  interval: 60m
+  install:
+    remediation:
+      retries: 3
+  values:
+    namespaceOverride: metrics

apps/metrics/app/repository.yaml

@@ -0,0 +1,8 @@
+apiVersion: source.toolkit.fluxcd.io/v1beta2
+kind: HelmRepository
+metadata:
+  name: prometheus
+  namespace: metrics
+spec:
+  interval: 60m
+  url: https://prometheus-community.github.io/helm-charts

cluster/apps.yaml

@@ -45,6 +45,21 @@ spec:
 ---
 apiVersion: kustomize.toolkit.fluxcd.io/v1
 kind: Kustomization
+metadata:
+  name: apps-metrics
+  namespace: flux-system
+spec:
+  interval: 5m
+  sourceRef:
+    kind: GitRepository
+    name: flux-system
+  path: ./apps/metrics
+  prune: true
+  wait: true
+  timeout: 5m0s
+---
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
 metadata:
   name: apps-plantwiki
   namespace: flux-system