Enhance monitoring configurations by enabling persistence for Loki and updating storage settings for Prometheus and Alertmanager to use Longhorn. Add Longhorn application to kustomization.yaml for improved storage management.

clusters/noble/apps/kustomization.yaml

@@ -4,6 +4,7 @@ resources:
   - argocd/application.yaml
   - cilium/application.yaml
   - kube-vip/application.yaml
+  - longhorn/application.yaml
   - monitoring-kube-prometheus/application.yaml
   - monitoring-loki/application.yaml
 

clusters/noble/apps/longhorn/application.yaml

@@ -0,0 +1,27 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: longhorn
+  namespace: argocd
+  annotations:
+    argocd.argoproj.io/sync-wave: "1"
+spec:
+  project: default
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: longhorn-system
+  sources:
+    - repoURL: https://charts.longhorn.io
+      chart: longhorn
+      targetRevision: "*"
+      helm:
+        valuesObject:
+          defaultSettings:
+            createDefaultDiskLabeledNodes: false
+            defaultDataPath: /var/mnt/longhorn
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true

clusters/noble/apps/monitoring-kube-prometheus/application.yaml

@@ -4,7 +4,7 @@ metadata:
   name: monitoring-kube-prometheus
   namespace: argocd
   annotations:
-    argocd.argoproj.io/sync-wave: "1"
+    argocd.argoproj.io/sync-wave: "2"
 spec:
   project: default
   destination:
@@ -20,12 +20,26 @@ spec:
             prometheusSpec:
               retention: 15d
               storageSpec:
-                emptyDir: {}
+                volumeClaimTemplate:
+                  spec:
+                    storageClassName: longhorn
+                    accessModes:
+                      - ReadWriteOnce
+                    resources:
+                      requests:
+                        storage: 20Gi
           alertmanager:
             alertmanagerSpec:
               retention: 120h
               storage:
-                emptyDir: {}
+                volumeClaimTemplate:
+                  spec:
+                    storageClassName: longhorn
+                    accessModes:
+                      - ReadWriteOnce
+                    resources:
+                      requests:
+                        storage: 5Gi
           kubeEtcd:
             enabled: false
           kubeScheduler:

clusters/noble/apps/monitoring-loki/application.yaml

@@ -4,7 +4,7 @@ metadata:
   name: monitoring-loki
   namespace: argocd
   annotations:
-    argocd.argoproj.io/sync-wave: "1"
+    argocd.argoproj.io/sync-wave: "2"
 spec:
   project: default
   destination:
@@ -19,7 +19,9 @@ spec:
           loki:
             enabled: true
             persistence:
-              enabled: false
+              enabled: true
+              storageClassName: longhorn
+              size: 20Gi
           promtail:
             enabled: true
           grafana: