Merge pull request 'Add Prometheus HelmRelease, PersistentVolumeClaim, and HelmRepository' (#278) from prometheus into main

Reviewed-on: #278

clusters/ipv6/monitoring/prometheus/prometheus-pvc.yml

@@ -0,0 +1,14 @@
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: prometheus-longhorn
+  namespace: monitoring
+spec:
+  resources:
+    requests:
+      storage: 2Gi
+  volumeMode: Filesystem
+  accessModes:
+    - ReadWriteMany
+  storageClassName: longhorn

clusters/ipv6/monitoring/prometheus/prometheus-release.yml

@@ -0,0 +1,22 @@
+---
+apiVersion: helm.toolkit.fluxcd.io/v2
+kind: HelmRelease
+metadata:
+  name: prometheus
+  namespace: monitoring
+spec:
+  interval: 6h
+  chart:
+    spec:
+      chart: prometheus
+      version: "28.4.0"
+      sourceRef:
+        kind: HelmRepository
+        name: prometheus-community
+        namespace: flux-system
+      interval: 6h
+  values:
+    server:
+      persistentVolume:
+        enabled: true
+        existingClaim: prometheus-longhorn

clusters/ipv6/monitoring/prometheus/prometheus-repo.yml

@@ -0,0 +1,9 @@
+---
+apiVersion: source.toolkit.fluxcd.io/v1
+kind: HelmRepository
+metadata:
+  name: prometheus-community
+  namespace: flux-system
+spec:
+  interval: 6h
+  url: https://prometheus-community.github.io/helm-charts